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  • 251. Esser, H.G.
    et al.
    Karduck, P.
    Rubel, M.
    Almqvist, Nils
    Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.
    Grobuch, L.
    Seggern, J. von
    Weshenfelder, F.
    Weinholdt, P.
    Comparison of different methods to characterize thin a-Si:H films1998In: Modern Developments and Applications in Microbeam Analysis, Wien: Encyclopedia of Global Archaeology/Springer Verlag, 1998, p. 163-170Chapter in book (Other academic)
  • 252.
    Etz, Corina
    Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.
    Activity: Magnetisation dynamics in ferromagnetic nanostructures2015Conference paper (Other (popular science, discussion, etc.))
  • 253.
    Etz, Corina
    Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.
    Activity: Simulating magnetic excitations: from bulk to nanostructures2015Conference paper (Other (popular science, discussion, etc.))
  • 254.
    Etz, Corina
    et al.
    Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science. Uppsala universitet.
    Bergqvist, Lars
    KTH, Royal Institute of Technology, Department of Materials and Nano Physics.
    Bergman, Anders
    Department of Physics and Astronomy, Uppsala University.
    Taroni, Andrea
    Department of Physics and Astronomy, Uppsala University.
    Bergman, Olle
    Department of Physics and Astronomy, Uppsala University.
    Atomistic spin dynamics and surface magnons2015In: Journal of Physics: Condensed Matter, ISSN 0953-8984, E-ISSN 1361-648X, Vol. 27, no 24, article id 243202Article in journal (Refereed)
    Abstract [en]

    Atomistic spin dynamics simulations have evolved to become a powerful and versatile tool for simulating dynamic properties of magnetic materials. It has a wide range of applications, for instance switching of magnetic states in bulk and nano-magnets, dynamics of topological magnets, such as skyrmions and vortices and domain wall motion. In this review, after a brief summary of the existing investigation tools for the study of magnons, we focus on calculations of spin-wave excitations in low-dimensional magnets and the effect of relativistic and temperature effects in such structures. In general, we find a good agreement between our results and the experimental values. For material specific studies, the atomistic spin dynamics is combined with electronic structure calculations within the density functional theory from which the required parameters are calculated, such as magnetic exchange interactions, magnetocrystalline anisotropy, and Dzyaloshinskii-Moriya vectors

  • 255.
    Etz, Corina
    et al.
    Department of Physics and Astronomy, Uppsala University.
    Costa, Marcio
    Uppsala universitet, Department of Physics and Astronomy, Uppsala University.
    Eriksson, Olle
    Uppsala universitet, Department of Physics and Astronomy, Uppsala University.
    Bergman, Anders
    Uppsala universitet, Department of Physics and Astronomy, Uppsala University.
    Accelerating the switching of magnetic nanoclusters by anisotropy-driven magnetization dynamics2012In: Physical Review B Condensed Matter, ISSN 0163-1829, E-ISSN 1095-3795, Vol. 86, no 22, article id 224401Article in journal (Refereed)
    Abstract [en]

    In this work, the magnetization dynamics of clusters supported on nonmagnetic substrates is shown to exhibit a complex response when subjected to external magnetic fields. The field-driven magnetization reversal of small Co clusters deposited on a Cu(111) surface has been studied by means of first-principles calculations and atomistic spin dynamics simulations. For applied fields ranging from 1 to 10 Tesla, we observe a coherent magnetization reversal with switching times in the range of several tenths of picoseconds to several nanoseconds, depending on the field strength. We find a nonmonotonous dependence of the switching times with respect to the strength of the applied field, which we prove has its origin in the complex magnetic anisotropy landscape of these low-dimensional systems. This effect is shown to be stable for temperatures around 10 K, and is possible to realize over a range of exchange interactions and anisotropy landscapes. Possible experimental routes to achieve this unique switching behavior are discussed

  • 256.
    Etz, Corina
    et al.
    Center for Computational Materials Science, Technical University Vienna.
    Lazarovits, Bence
    Hungarian Academy of Sciences, Wigner Research Centre for Physics, Institute for Solid State Physics and Optics.
    Zabloudil, J.
    Center for Computational Materials Science, Technical University Vienna.
    Hammerling, Robert H.
    Center for Computational Materials Science, Technical University Vienna.
    Újfalussy, Balázs
    Hungarian Academy of Sciences, Wigner Research Centre for Physics, Institute for Solid State Physics and Optics.
    Szunyogh, László
    Department of Theoretical Physics, Budapest University of Technology and Economics.
    Stocks, George Malcolm
    Materials Science and Technology Division, Oak Ridge National Laboratory.
    Weinberger, Peter
    Vienna University of Technology, Center for Computational Materials Science, Technical University Vienna.
    Magnetic properties of FeCo nanoclusters on Cu(100: Ab initio calculations2007In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 75, no 24, article id 245432Article in journal (Refereed)
    Abstract [en]

    We present ab initio calculations of the magnetic moments and magnetic anisotropy energies of small FeCo clusters of varying composition on top of a Cu(100) substrate. Three different cluster layouts have been considered, namely, 2×2, 3×3, and crosslike pentamer clusters. The ratio of Co atoms with respect to the total number in a chosen cluster ("concentration") was varied and all possible arrangements of the atomic species were taken into account. Calculations have been performed fully relativistic using the embedded-cluster technique in conjunction with the screened Korringa-Kohn- Rostoker method and the magnetocrystalline anisotropy energy (MAE) has been evaluated by means of the magnetic force theorem. A central result of the investigations is that the size of the magnetic moments of the individual Fe and Co atoms and their contributions to the anisotropy energy depend on the position they occupy in a particular cluster and on the type and the number of nearest neighbors. The MAE for the 2×2 and 3×3 clusters varies with respect to the concentration of Co atoms in the same manner as the corresponding monolayer case, whereas the pentamer clusters show a slightly different behavior. Furthermore, for the clusters with an easy axis along a direction in the surface plane, the MAE shows a significant angular dependence.

  • 257.
    Etz, Corina
    et al.
    Department of Physics and Astronomy, Uppsala University.
    Maznichenko, Igor
    Institut für Physik, Martin-Luther-Universität Halle-Wittenberg.
    Böttcher, D.
    Max-Planck-Institut für Mikrostrukturphysik.
    Henk, J.
    Institut für Physik, Martin-Luther-Universität Halle-Wittenberg.
    Yaresko, A.N.
    Max-Planck-Institut für Festkörperforschung.
    Hergert, W.
    Institut für Physik, Martin-Luther-Universität Halle-Wittenberg.
    Mazin, I.I.
    Naval Research Laboratory, Washington, DC.
    Mertig, Ingrid
    Institut für Physik, Martin-Luther-Universität Halle-Wittenberg.
    Ernst, A.
    Max-Planck-Institut für Mikrostrukturphysik.
    Indications of weak electronic correlations in SrRuO3 from first-principles calculations2012In: Physical Review B Condensed Matter, ISSN 0163-1829, E-ISSN 1095-3795, Vol. 86, no 6, article id 64441Article in journal (Refereed)
    Abstract [en]

    We provide, by a detailed first-principles investigation, evidence for weak electronic correlations in SrRuO 3. The magnetism in SrRuO 3, in terms of the equilibrium magnetization and critical temperature, is well described by the generalized gradient approximation. Including Hubbard-type correlations results in worse agreement with experiment

  • 258.
    Etz, Corina
    et al.
    Institut de Physique et de Chimie des Matériaux de Strasbourg.
    Stoeffler, Daniel C.A.
    Institut de Physique et de Chimie des Matériaux de Strasbourg.
    First principle study of the magnetism of Sr 2CoMoO 6-δ (δ = 0, 1/2) double perovskites2006In: European Physical Journal B: Condensed Matter Physics, ISSN 1434-6028, E-ISSN 1434-6036, Vol. 54, no 4, p. 429-434Article in journal (Refereed)
    Abstract [en]

    We investigate the electronic structure of bulk Sr 2CoMoO 6-δ double perovskites using the ab initio Full Potential Linearized Augmented Plane Wave method in order to study their magnetic properties within the GGA and GGA+U methods. We discuss the relative stability of ferromagnetic (FM) and antiferromagnetic (AFM) orders (i) without and with taking into account the observed tilting of the oxygen octahedra and (ii) by introducing oxygen vacancies. We show that a very good agreement with experimental results - AFM order for δ= 0 and FM order for δ= 1/2 - is obtained only when the tilting of the oxygen tetrahedra is taking into account and when the GGA+U method is used

  • 259.
    Etz, Corina
    et al.
    Vienna University of Technology.
    Vernes, Andras
    Vienna University of Technology.
    Szunyogh, Laszlo
    Budapest University of Technology and Economics.
    Weinberger, Peter
    Vienna University of Technology.
    Ab initio magneto-optical properties of bcc Ni/Ni(100)2008In: Physical Review B Condensed Matter, ISSN 0163-1829, E-ISSN 1095-3795, Vol. 77, no 6, article id 64420Article in journal (Refereed)
    Abstract [en]

    The inter- and intralayer contributions to the layer-resolved complex optical conductivity tensor for semi-infinite layered systems are calculated in terms of the Luttinger formula within the spin-polarized relativistic screened Korringa-Kohn-Rostoker method. Ab initio Kerr angles are then obtained for arbitrary geometry and incidence via a 2x2 matrix technique including all multiple reflections and all optical interferences. Applied to in-plane single-domain magnetized bcc Ni/Ni(100), it is proven that the assumed appropriate formula of Kerr angles widely used to explain magneto-optical Kerr effect with rotating magnetic field measurements fully agrees with our ab initio Kerr data. From the experimental Kerr data of Tian [Phys. Rev. Lett. 94, 137210 (2005)], however, it cannot be concluded that the deduced magnetic properties apply for bulk Ni, since about 75% of the contributions to the Kerr rotation angle arise from the surface.

  • 260.
    Etz, Corina
    et al.
    Max-Planck-Institut für Mikrostrukturphysik.
    Vernes, Andras
    Vienna University of Technology, AC²T research GmbH - Austrian Center of Competence for Tribology, Viktor-Kaplan-Straße 2 D, 2700 Wiener Neustadt.
    Weinberger, Peter
    Vienna University of Technology, Max-Planck-Institut für Mikrostrukturphysik.
    Magneto-optical properties of Co/Ir superstructures on Ir(111)2011In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 84, no 1, article id 14419Article in journal (Refereed)
    Abstract [en]

    The fully relativistic spin-polarized screened Korringa-Kohn-Rostoker method is used to evaluate the electronic and magnetic structure as well as the optical conductivity of (ComIrm)n superstructures on Ir(111). By mapping the microscopic optical conductivity tensor onto the macroscopic permittivity tensor and by using the so-called 2×2 matrix technique the surface reflectivity matrices for these systems are then calculated, from which in turn the Kerr rotation and ellipticity angles can be determined. It is found (i) that when varying at a given value of m the number of repetitions n, these angles are linearly proportional to the total magnetic moment, and (ii) that at a frequency of about 3.8 eV the Kerr rotation angles have the largest value, the corresponding maximum being mainly caused by the Ir spacer layers. The optical properties of the free surface of Ir(111), which is considered to check the applied theoretical schemes, turn out to be in good agreement with existing experimental data.

  • 261.
    Etz, Corina
    et al.
    Center for Computational Materials Science, Vienna University of Technology.
    Vernes, Andras
    Vienna University of Technology, Center for Computational Materials Science, Vienna University of Technology.
    Weinberger, Peter
    Vienna University of Technology, Center for Computational Materials Science, Vienna University of Technology.
    ROTMOKE: An assessment of macroscopic models for bcc Ni/Ni(100)2008In: Philosophical Magazine, ISSN 1478-6435, E-ISSN 1478-6443, Vol. 88, no 18-20, p. 2765-2775Article in journal (Refereed)
    Abstract [en]

    Ab-initio Kerr angles for a multilayer system were calculated by means of Luttinger's formalism within the spin-polarized relativistic screened Korringa-Kohn-Rostoker method by including all multiple reflections and optical interferences via the 2 2 matrix technique. Two further macroscopic models are suggested for a multilayer system; i.e., the two-media approach and the three-media approach. The Kerr angles obtained using the two-media approach show that 75 % of the Kerr rotation angles arise from surface contributions when compared to the 2 2 matrix approach. Furthermore, by comparing the three-media approach to the 2 2 matrix technique it is found that almost 25 % of the Kerr rotation angles are due to interfaces between the atomic layers

  • 262.
    Etz, Corina
    et al.
    Center for Computational Materials Science, Vienna University of Technology.
    Zabloudil, J.
    Center for Computational Materials Science, Technical University Vienna.
    Weinberger, Peter
    Vienna University of Technology.
    Vedmedenko, Elena Yu
    Institute for Applied Physics, University of Hamburg.
    Magnetic properties of single atoms of Fe and Co on Ir(111) and Pt(111)2008In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 77, no 18, article id 184425Article in journal (Refereed)
    Abstract [en]

    In using the fully relativistic versions of the embedded cluster and screened Korringa-Kohn-Rostoker methods for semi-infinite systems the magnetic properties of single adatoms of Fe and Co on Ir(111) and Pt(111) are studied. It is found that for Pt(111) Fe and Co adatoms are strongly perpendicularly oriented, while on Ir(111) the orientation of the magnetization is only out of plane for a Co adatom; for an Fe adatom it is in plane. For comparison, the so-called band energy parts of the anisotropy energy of a single layer of Fe and Co on these two substrates are also shown. The obtained results are compared to recent experimental studies using, e.g., the spin-polarized STM technique

  • 263.
    Fakhardji, Wissam
    et al.
    Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.
    El-Kader, M.S.A.
    Haskopoulos, Anastasios
    Maroulis, George
    Gustafsson, Magnus
    Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.
    Contribution from dimers to the collision-induced absorption spectra in an Ar–Kr gas mixture2019In: International Conference on Spectral Lines Shapes: 17–22 June 2018, Dublin City University, Ireland / [ed] John Costello, 2019, Vol. 1289, article id 012021Conference paper (Refereed)
  • 264.
    Fakhardji, Wissam
    et al.
    Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.
    Gustafsson, Magnus
    Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.
    Molecular dynamics simulations of collision-induced absorption: Implementation in LAMMPS2017In: Journal of Physics, Conference Series, ISSN 1742-6588, E-ISSN 1742-6596, Vol. 810, no 1, article id 012031Article in journal (Refereed)
    Abstract [en]

    We pursue simulations of collision-induced absorption in a mixture of argon and xenon gas at room temperature by means of classical molecular dynamics. The established theoretical approach (Hartmann et al. 2011 J. Chem. Phys. 134 094316) is implemented with the molecular dynamics package LAMMPS. The bound state features in the absorption spectrum are well reproduced with the molecular dynamics simulation in comparison with a laboratory measurement. The magnitude of the computed absorption, however, is underestimated in a large part of the spectrum. We suggest some aspects of the simulation that could be improved

  • 265.
    Fakhardji, Wissam
    et al.
    Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.
    Szabo, Peter
    Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.
    El-Kader, M.S.A.
    Department of Engineering Mathematics and Physics, Faculty of Engineering, Cairo University, Giza, Egypt. Department of Physics, Faculty of Sciences and Humanity Studies, Huraimla, Shaqra University, Shaqra, Saudi Arabia.
    Haskopoulos, Anastasios
    Department of Chemistry, University of Patras, Patras, Greece.
    Maroulis, George
    Department of Chemistry, University of Patras, Patras, Greece.
    Gustafsson, Magnus
    Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.
    Collision-induced absorption in Ar–Kr gas mixtures: A molecular dynamics study with new potential and dipole data2019In: Journal of Chemical Physics, ISSN 0021-9606, E-ISSN 1089-7690, Vol. 151, no 14, article id 144303Article in journal (Refereed)
    Abstract [en]

    We have implemented a scheme for classical molecular dynamics simulations of collision-induced absorption. The program has been applied to a gas mixture of argon (Ar) and krypton (Kr). The simulations are compared with accurate quantum dynamical calculations. The comparisons of the absorption coefficients show that classical molecular dynamics is correct within 10% for photon wave numbers up to 220 cm−1 at a temperature of 200 K for this system. At higher temperatures, the agreement is even better. Molecular dynamics accounts for many-body interactions, which, for example, give rise to continuous dimer formation and destruction in the gas. In this way, the method has an advantage compared with bimolecular classical (trajectory) treatments. The calculations are carried out with a new empirical Ar–Kr pair potential. This has been obtained through extensive analysis of experimental thermophysical and transport properties. We also present a new high level ab initio Ar–Kr potential curve for comparison, as well as ab initio interaction-induced dipole curves computed with different methods. In addition, the Ar–Kr polarizability and hyperpolarizability are reported. A comparison of the computed absorption spectra with an experiment taken at 300 K shows satisfactory agreement although a difference in absolute magnitude of 10%–15% persists. This discrepancy we attribute mainly to experimental uncertainty.

  • 266.
    Fanchini, G.
    et al.
    Dipartimento di Fisica Sperimentale, Università di Torino.
    Mandracci, P.
    Dipartimento di Fisica Sperimentale, Università di Torino.
    Tagliaferro, A.
    Dipartimento di Fisica Sperimentale, Università di Torino.
    Rodil, S. E.
    Instituto de Ciencia de Materiales de Madrid, Consejo Superior de Investigaciones.
    Vomiero, Alberto
    Laboratori Nazionali di Legnaro.
    Mea, G. Della
    Laboratori Nazionali di Legnaro.
    Growth and characterisation of polymeric amorphous carbon and carbon nitride films from propane2005In: Diamond and related materials, ISSN 0925-9635, E-ISSN 1879-0062, Vol. 14, no 3-7, p. 928-933Article in journal (Refereed)
    Abstract [en]

    In this work, we report about the deposition of a-C(N):H films by electron-cyclotron-resonance using propane as a carbon precursor. The films generally present high H contents (up to 61 at.%) and large optical gaps. The maximum N content we obtained is 13 at.%. In nitrogenated films, we observed a strong decrease of the stretching intensity of the infrared spectra of the hydrocarbon (CHn) vibrations, even at very low nitrogen content, the H content being still comparable to that of pure a-C:H. The various phenomena that can lead to such an effect are discussed: (i) different type of hydrogen bonding (CHn and NHn) in presence and in absence of nitrogenation; (ii) weakening of the cross-section of the CHn groups in presence of nitrogen; (iii) large presence of non-bonded hydrogen meaning, with this, either the presence of molecular H2 or unbounded hydrogen. In addition, the residual amount of IR absorption due to C-H vibrations shows that, in a-CN:H, C-H bonded and non-bonded hydrogen does coexist. © 2005 Elsevier B.V. All rights reserved.

  • 267.
    Fedorenko, Svetlana V.
    et al.
    A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center of Russian Academy of Sciences.
    Jilkin, Michail E.
    Kazan (Volga Region) Federal University.
    Gryaznova, Tatyana V.
    A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center of Russian Academy of Sciences.
    Iurko, Elizaveta O.
    A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center of Russian Academy of Sciences.
    Bochkova, Olga D.
    A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center of Russian Academy of Sciences.
    Mukhametshina, Alsu R.
    A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center of Russian Academy of Sciences.
    Nizameev, Irek R.
    A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center of Russian Academy of Sciences.
    Kholin, Kirill V.
    A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center of Russian Academy of Sciences.
    Mazzaro, Raffaello
    CNR-IMM, Bologna Section.
    Morandi, Vittorio
    CNR-IMM, Bologna Section.
    Vomiero, Alberto
    Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.
    Mustafina, Asiya R.
    A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center of Russian Academy of Sciences.
    Budnikova, Yulia H.
    A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center of Russian Academy of Sciences.
    Silica Nanospheres Coated by Ultrasmall Ag0 Nanoparticles for Oxidative Catalytic Application2017In: Colloid and Interface Science Communications, ISSN 2215-0382, Vol. 21, p. 1-5Article in journal (Refereed)
    Abstract [en]

    The present work introduces optimal modifiсation of core-shell composite nanomaterial, where small (2–8 nm) Ag0 nanoparticles are deposited onto large (about 140 nm) silica spheres for application in oxidative catalysis. The size of Ag0 and density of its deposition onto silica spheres was modified by the post treatment of initially deposited Ag0 (about 30 nm) by hydrogen peroxide in specific conditions. The comparison of catalytic effect of the post-treated and initial SN-Ag0 in electrochemical phosphonation of benzo(thia)oxazoles by diethyl phosphite in oxidative conditions revealed the difference between the composite nanoparticles. In particular, the post-treated SNs-Ag0 nanoparticles exhibit efficient catalytic effect in oxidative conditions resulting in facile and green method for synthesis of phosphonated benzooxa(thia)zoles, while no catalytic effect is observed under the use of larger Ag0 nanoparticles deposited onto silica spheres. The use of Ag0-based nanomaterial in oxidative catalysis had been never demonstrated before

  • 268.
    Fehér, Klaudia
    et al.
    Department of Organic Chemistry University of Pannonia, Institute of Chemistry Egyetem, Veszprém, Hungary.
    Nagy, Eniko
    Department of Organic Chemistry University of Pannonia, Institute of Chemistry Egyetem, Veszprém, Hungary.
    Szabo, Peter
    Department of Analytical Chemistry University of Pannonia, Institute of Chemistry Egyetem, Veszprém, Hungary.
    Juzsakova, Tatjana
    University of Pannonia, Institute of Environmental Engineering Egyetem, Veszprém Hungary.
    Srankó, David
    Department of Surface Chemistry and Catalysis Hungarian Academy of Sciences, Centre for Energy Research, Budapest, Hungary.
    Gömöry, Ágnes
    Research Centre for Natural Sciences Hungarian Academy of Sciences, Budapest, Hungary.
    Kollár, Lazslo
    Department of Inorganic Chemistry and MTA-PTE Research Group for Selective Chemical Syntheses University of Pécs, Pécs, Hungary.
    Skoda-Földes, Rita
    Department of Organic Chemistry University of Pannonia, Institute of Chemistry Egyetem, Veszprém, Hungary.
    Heterogeneous azide–alkyne cycloaddition in the presence of a copper catalyst supported on an ionic liquid polymer/silica hybrid material2018In: Applied organometallic chemistry, ISSN 0268-2605, E-ISSN 1099-0739, Vol. 32, no 6, article id e4343Article in journal (Refereed)
    Abstract [en]

    Heterogeneous copper catalysts were prepared by the deposition of CuI on a hybrid material consisting of silica and a polymer with imidazolium moieties. The solid materials were characterised using solid‐phase NMR, Fourier transform infrared, Raman and X‐ray photoelectron spectroscopies and Brunauer–Emmett–Teller measurements. The formation of copper–carbene complexes was proved from Raman spectra and the results were supported by density functional theory calculations. The catalyst could be recycled efficiently with low loss of copper. Metal leaching was proved to be facilitated by the use of conditions typical for a homogeneous system (the presence of a polar solvent or the addition of a tertiary amine). Besides simple model reactions, the best catalyst was found to be suitable for the synthesis of triazoles of more elaborate structure, such as ferrocene or steroid derivatives.

  • 269.
    Fernández, C. De Julián
    et al.
    Dipartimento di Fisica Sperimentale, Università di Torino.
    Manera, M. G.
    CNR-IMM Sezione di Bologna.
    Spadavecchia, J.
    CNR-IMM Sezione di Bologna.
    Maggioni, G.
    Dipartimento di Fisica Sperimentale, Università di Torino.
    Quaranta, A.
    Laboratori Nazionali di Legnaro.
    Mattei, G.
    Dipartimento di Fisica Sperimentale, Università di Torino.
    Bazzan, M.
    Dipartimento di Fisica Sperimentale, Università di Torino.
    Cattaruzza, E.
    Dipartimento di Fisica Sperimentale, Università di Torino.
    Bonafini, M.
    Dipartimento di Fisica Sperimentale, Università di Torino.
    Negro, E.
    Dipartimento di Fisica Sperimentale, Università di Torino.
    Vomiero, Alberto
    Dipartimento di Fisica, Università di Padova.
    Carturan, S.
    Dipartimento di Fisica Sperimentale, Università di Torino.
    Scian, C.
    Dipartimento di Fisica Sperimentale, Università di Torino.
    Mea, G. Della
    Laboratori Nazionali di Legnaro.
    Rella, R.
    CNR-IMM Sezione di Bologna.
    Vasanelli, L.
    CNR-IMM Sezione di Bologna.
    Mazzoldi, P.
    Dipartimento di Fisica Sperimentale, Università di Torino.
    Study of the gas optical sensing properties of Au-polyimide nanocomposite films prepared by ion implantation2005In: Sensors and actuators. B, Chemical, ISSN 0925-4005, E-ISSN 1873-3077, Vol. 111-112, no SUPPL., p. 225-229Article in journal (Refereed)
    Abstract [en]

    Au-polyimide nanocomposites have been synthesized by implanting Au + ions in pyromellitic dianhydride-4,4′ oxydianiline polyimide films prepared by glow discharge vapor deposition polymerisation (GDVDP). A structural and optical characterization shows that Au clusters grow only implanting 5 × 1016 Au+/cm2. This sample class shows interesting dynamic optical absorption sensing responses towards methanol and ethanol vapors in the spectral range corresponding to the surface plasmon resonance (SPR) peak of the gold nanoparticles. Traditional surface plasmon resonance measurements performed onto virgin polyimide thin films in controlled atmosphere show a sensing activity due to a variation of the film thickness and of the real part of refractive index. The comparison of the results obtained onto virgin films and implanted ones suggests that the sensing mechanisms can be attributed both to the modification of polymer optical properties and to the chemical activity of gold nanoparticles. © 2005 Elsevier B.V. All rights reserved.

  • 270.
    Fiorini, M.
    et al.
    Ferrara University, INFN.
    Dalpiaz, P.
    Ferrara University, INFN.
    Guidi, V.
    Ferrara University, INFN.
    Assmann, R.
    CERN.
    Efthymiopoulos, I.
    CERN.
    Gatignon, L.
    CERN.
    Scandale, W.
    CERN.
    Taratin, A.
    JINR Dubna.
    Chesnokov, Y.
    IHEP Protvino.
    Ivanov, Y.
    PNPI Gatchina.
    Vomiero, Alberto
    INFN Laboratori Nazionali di Legnaro.
    Biino, C.
    INFN Sezione di Ferrara.
    Ambrosi, G.
    INFN Sezione di Ferrara.
    Santacesaria, R.
    INFN Sezione di Ferrara.
    Experimental study of crystal channeling at CERN-SPS for beam-HALO cleaning2006In: EPAC 2006: 10th European Particle Accelerator Conference EPAC 2006 ; a Europhysics conference ; Edinburgh, Scotland, International Conference Centre (EICC), 26 - 30 June 2006, Edinburgh: European Physical Society Accelerator Group (EPS-AG) , 2006, p. 1538-1540Conference paper (Refereed)
    Abstract [en]

    An efficient and robust collimation system is mandatory for any superconducting hadron collider, in particular for the LHC, which will store a beam of unprecedented high intensity and energy. The usage of highly efficient and short primary bent-crystal collimators might be a possibility for reaching nominal and ultimate LHC intensity. Over the last years, groups in Italy (Ferrara) and Russia (St. Petersburg) have developed crystal production methods, that considerably improve the crystal quality. These developments led, in turn, to a surprising increase in the channeling efficiency and to the recent observation of the "volume reflection" mechanism. The aim of the proposed experiment is the setup of a beam test facility, directing primary protons from the SPS onto a bent silicon crystal, and the quantitative study of single-pass efficiency for all involved processes. Final goal will be the extrapolation of important information on the feasibility of a crystal collimator for halo cleaning in the LHC. The experiment will be performed in the H8 beamline at the CERN SPS where a beam with very small divergence can be provided thus representing a unique facility for tests and characterization of crystals to be used for particle channeling studies.

  • 271.
    Fletcher, Leigh N.
    et al.
    Department of Physics and Astronomy, University of Leicester.
    Gustafsson, Magnus
    Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.
    Orton, Glenn S.
    Jet Propulsion Laboratory, California Institute of Technology.
    Hydrogen Dimers in Giant-planet Infrared Spectra2018In: Astrophysical Journal Supplement Series, ISSN 0067-0049, E-ISSN 1538-4365, Vol. 235, no 1, article id 24Article in journal (Refereed)
    Abstract [en]

    Despite being one of the weakest dimers in nature, low-spectral-resolution Voyager/IRIS observations revealed the presence of (H2)2 dimers on Jupiter and Saturn in the 1980s. However, the collision-induced H2-H2 opacity databases widely used in planetary science have thus far only included free-to-free transitions and have neglected the contributions of dimers. Dimer spectra have both fine-scale structure near the S(0) and S(1) quadrupole lines (354 and 587 cm-1, respectively), and broad continuum absorption contributions up to ±50 cm-1 from the line centers. We develop a new ab initio model for the free-to-bound, bound-to-free, and bound-to-bound transitions of the hydrogen dimer for a range of temperatures (40-400 K) and para-hydrogen fractions (0.25-1.0). The model is validated against low-temperature laboratory experiments, and used to simulate the spectra of the giant planets. The new collision-induced opacity database permits high-resolution (0.5-1.0 cm-1) spectral modeling of dimer spectra near S(0) and S(1) in both Cassini Composite Infrared Spectrometer observations of Jupiter and Saturn, and in Spitzer Infrared Spectrometer (IRS) observations of Uranus and Neptune for the first time. Furthermore, the model reproduces the dimer signatures observed in Voyager/IRIS data near S(0) on Jupiter and Saturn, and generally lowers the amount of para-H2 (and the extent of disequilibrium) required to reproduce IRIS observations.

  • 272.
    Fonseca, Ricardo Morais
    et al.
    Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Space Technology.
    Zorzano Mier, María-Paz
    Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Space Technology.
    Martin-Torres, Javier
    Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Space Technology.
    MARSWRF Prediction of Entry Descent Landing Profiles: Applications to Mars Exploration2019In: Earth and Space Science, E-ISSN 2333-5084, Vol. 6, no 8, p. 1440-1459Article in journal (Refereed)
    Abstract [en]

    In this paper we use the Mars implementation of the Planet Weather Research and Forecasting model, MarsWRF, to simulate the Entry, Descent and Landing (EDL) vertical profiles from six past missions: Pathfinder, Mars Exploration Rovers Opportunity and SpiritPhoenix, Mars Science Laboratory Curiosity rover and ExoMars 2016 (Schiaparelli), and compare the results with observed data. In order to investigate the sensitivity of the model predictions to the atmospheric dust distribution, MarsWRF is run with two prescribed dust scenarios. It is concluded that the MarsWRF EDL predictions can be used for guidance into the design and planning stage of future missions to the planet, as it generally captures the observed EDL profiles, although it has a tendency to underestimate the temperature and overestimate the density for heights above 15 km. This could be attributed to an incorrect representation of the observed dust loading. We have used the model to predict the EDL conditions that may be encountered by two future missions: ExoMars 2020 and Mars 2020. When run for Oxia Planum and Jezero Crater for the expected landing time, MarsWRF predicts a large sensitivity to the dust loading in particular for the horizontal wind speed above 10‐15 km with maximum differences of up to ±30 m s‐1 for the former and ±15 m s‐1 for the latter site. For both sites, the best time for EDL, i.e. when the wind speed is generally the weakest with smaller shifts in direction, is predicted to be in the late morning and early afternoon.

  • 273.
    Formicola, A.
    et al.
    Institut Für Experimentalphysik III.
    Imbriani, G.
    Osservatorio Astronomico di Collurania, Teramo.
    Costantini, H.
    Dipartimento di Fisica Sperimentale, Università di Torino.
    Angulo, C.
    Centre de Recherches du Cyclotron, Universit¶e Catholique de Louvain, Louvain-la-Neuve.
    Bemmerer, D.
    Institut für Atomare Physik und Fachdidaktik, Technische Universität Berlin.
    Bonetti, R.
    Istituto di Fisica Generale Applicata.
    Broggini, C.
    INFN.
    Corvisiero, P.
    Dipartimento di Fisica Sperimentale, Università di Torino.
    Cruz, J.
    Centro de Fısica Nuclear da Universidade de Lisboa.
    Descouvemont, P.
    Physique Nucléaire Théorique et Physique Mathématique, Université Libre de Bruxelles.
    Fülöp, Z.
    Institute of Nuclear Research (ATOMKI), Debrecen.
    Gervino, G.
    Dipartimento di Fisica Sperimentale, Università di Torino.
    Guglielmetti, A.
    Istituto di Fisica Generale Applicata.
    Gustavino, C.
    INFN.
    Gyürky, G.
    Institute of Nuclear Research (ATOMKI), Debrecen.
    Jesus, A. P.
    Centro de Fısica Nuclear da Universidade de Lisboa.
    Junker, M.
    INFN.
    Lemut, A.
    Dipartimento di Fisica Sperimentale, Università di Torino.
    Menegazzo, R.
    INFN.
    Prati, P.
    Dipartimento di Fisica Sperimentale, Università di Torino.
    Roca, V.
    Dipartimento di Fisica Sperimentale, Università di Torino.
    Rolfs, C.
    Institut Für Experimentalphysik III.
    Romano, M.
    Dipartimento di Fisica Sperimentale, Università di Torino.
    Alvarez, C. Rossi
    INFN.
    Schümann, F.
    Institut Für Experimentalphysik III.
    Vomiero, Alberto
    Dipartimento di Fisica, Università di Padova.
    Zavatarelli, S.
    Dipartimento di Fisica Sperimentale, Università di Torino.
    Astrophysical S-factor of 14N(p,γ)15O2004In: Physics Letters B, ISSN 0370-2693, E-ISSN 1873-2445, Vol. 591, no 1-2, p. 61-68Article in journal (Refereed)
    Abstract [en]

    We report on a new measurement of the 14N(p,γ) 15O capture cross section at Ep=140 to 400 keV using the 400 kV LUNA accelerator facility at the Laboratori Nazionali del Gran Sasso (LNGS). The uncertainties have been reduced with respect to previous measurements and their analysis. We have analyzed the data using the R-matrix method and we find that the ground state transition accounts for about 15% of the total S-factor. The main contribution to the S-factor is given by the transition to the 6.79 MeV state. We find a total S(0)=1.7±0.2 keVb, in agreement with recent extrapolations. The result has important consequences for the solar neutrino spectrum as well as for the age of globular clusters. © 2004 Elsevier B.V. All rights reserved.

  • 274.
    Fornasari, Luca
    et al.
    Dipartimento di Chimica “Giacomo Ciamician”, Università; di Bologna, Bologna, Italy.
    Mazzaro, Raffaello
    Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science. CNR-IMM, Area della Ricerca di Bologna, Bologna, Italy.
    Boanini, Elisa
    Dipartimento di Chimica “Giacomo Ciamician”, Università; di Bologna, Bologna, Italy.
    d’Agostino, Simone
    Dipartimento di Chimica “Giacomo Ciamician”, Università; di Bologna, Bologna, Italy.
    Bergamini, Giacomo
    Dipartimento di Chimica “Giacomo Ciamician”, Università; di Bologna, Bologna, Italy.
    Grepioni, Fabrizia
    Dipartimento di Chimica “Giacomo Ciamician”, Università; di Bologna, Bologna, Italy.
    Braga, Dario
    Dipartimento di Chimica “Giacomo Ciamician”, Università; di Bologna, Bologna, Italy.
    Self-Assembly and Exfoliation of a Molecular Solid Based on Cooperative B-N and Hydrogen Bonds2018In: Crystal Growth & Design, ISSN 1528-7483, E-ISSN 1528-7505, Vol. 18, no 12, p. 7259-7263Article in journal (Refereed)
    Abstract [en]

    Herein we report that 4-pyridinylboronic acid (1) in the solid state self-assembles into tetrameric macrocycles via B-N bond formation. The tetramers are linked via O-H···O bonds resulting in a material that can be exfoliated via sonication to give thinner sheets as we demonstrate via Fourier transform infrared spectroscopy, transmission electron microscopy, selected area electron diffraction, and atomic force microscopy experiments. For comparison, the structure of the related compound 4-(pyridin-4-yl) phenylboronic acid (2) is also discussed

  • 275.
    Franz, Jan
    et al.
    University of Gothenburg.
    Gustafsson, Magnus
    Department of Chemistry, University of Gothenburg.
    Nyman, Gunnar
    Department of Chemistry and Molecular Biology, University of Gothenburg.
    Formation of carbon-monoxide by radiative association: a quantum-dynamical study2011In: Monthly notices of the Royal Astronomical Society, ISSN 0035-8711, E-ISSN 1365-2966, Vol. 414, no 4, p. 3547-3550Article in journal (Refereed)
    Abstract [en]

    Rate coefficients for the formation of carbon monoxide (CO) by radiative association of carbon and oxygen atoms are computed using quantum dynamical simulations. At temperatures above 10 K CO radiative association is dominated by C(3P) and O(3P) approaching on the A1Π potential energy curve. The rate coefficient is estimated as k=A(T/300 K)αexp−β/T with A= 1.39 × 10−18 cm3 s−1, α=−0.016 and β= 92.2 for temperatures between 6 and 127.2 K, and A= 1.36 × 10−17 cm3 s−1, α= 0.41 and β= 340 for temperatures between 127.2 and 15 000 K. Furthermore we computed the rate coefficients for approaching on the X1Σ+ curve. For temperatures below 200 K it is between 0.7 × 10−22 and 4 × 10−22 cm3 s−1.

  • 276. Fredriksson, Sverker
    A phenomenological two-component picture of large transverse momentum production1976In: Physics Letters B, ISSN 0370-2693, E-ISSN 1873-2445, Vol. 63, no 3, p. 321-323Article in journal (Refereed)
    Abstract [en]

    It is suggested that large-pT hadrons can be classified into two categories with completely different properties according to whether they contain a leading quark or just sea quarks from the initial projectile-target system. From simple quark counting we get relations between hadron ratios at large pT, which are consistent with data.

  • 277.
    Fredriksson, Sverker
    Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.
    A (ud)-cious model of the proton1994In: Workshop on diquarks II: Villa Gualino, Torino, Italy, 2 - 4 November 1992 / [ed] Mauro Anselmino, Singapore: World Scientific and Engineering Academy and Society, 1994, p. 14-23Conference paper (Refereed)
  • 278. Fredriksson, Sverker
    An estimate of the effect of nuclear Fermi motion on large transverse momentum inclusive spectra from high-energy proton-nucleus collisions1975In: Nuclear Physics B, ISSN 0550-3213, E-ISSN 1873-1562, Vol. 94, no 2, p. 337-343Article in journal (Refereed)
    Abstract [en]

    The effect of nuclear Fermi motion on large-pT inclusive hadron spectra and particle ratios from high-energy proton-nucleus collisions is estimated within the scope of the parton model for proton-nucleon collisions and the box model for the nucleus. Considerable effects are found in some cases.

  • 279. Fredriksson, Sverker
    Clusters and tubes in multiparticle production from nuclear targets1980In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 45, no 17, p. 1371-1374Article in journal (Refereed)
    Abstract [en]

    Recent data on backward pion production in 0.8-4.89-GeV proton-nucleus collisions are analyzed within the scope of models where target nucleons react collectively. It is shown that the nuclear-size dependence in data is a sensitive probe of the effective target mass. The experimental results hint at a synthesis of the cluster ("fluctuon") model and the collective tube model.

  • 280.
    Fredriksson, Sverker
    Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.
    Cosmic diquarks1998In: Workshop on Diquarks III: Villa Gualino, Torino, Italy, 28 -30 October 1996 / [ed] Mauro Anselino, Singapore: World Scientific Publishing Co Pte Ltd , 1998, p. 99-108Conference paper (Refereed)
  • 281. Fredriksson, Sverker
    Demons at Celcius?1983In: Uppsala Workshop, Kungl. Tekniska Högskolan , 1983Conference paper (Refereed)
  • 282. Fredriksson, Sverker
    Diquarks1987In: Proceedings: Dubna HEP Seminar 1986, Joint Institute for Nuclear Research , 1987, Vol. v.2:134Conference paper (Refereed)
  • 283. Fredriksson, Sverker
    Diquarks1983In: Proceedings / [ed] Z. Ajduk, Warsaw Univ., Inst. Theor. Phys. , 1983Conference paper (Refereed)
  • 284. Fredriksson, Sverker
    Electron-positron annihilation and related topics: an elementary introduction1975Report (Other academic)
  • 285. Fredriksson, Sverker
    Hello diquark, goodbye gluon !1984In: New Particle Production: Proceedings of the Hadronic session of the Nineteenth Rencontres de Moriond / [ed] J. Tran Thanh Van, Editions Frontieres , 1984, Vol. 2, p. 479-Conference paper (Refereed)
  • 286. Fredriksson, Sverker
    Large-pT π0 Production in High-Energy πp Collisions1976In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 37, no 21, p. 1373-1374Article in journal (Refereed)
    Abstract [en]

    It is pointed out that the recently measured difference in pT spectrum between π±p→π0X and pp→π0X, with a large-pT π0, seems to be a consequence only of the smaller number of quarks per projectile in a pion beam.

  • 287. Fredriksson, Sverker
    Nuclear structure functions and the size of diquarks in nucleons1984In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 52, no 9, p. 724-726Article in journal (Refereed)
    Abstract [en]

    It is suggested that the observed difference between deep-inelastic structure functions from iron and deuterium targets comes about because two of the quarks in a nucleon are tightly bound in a diquark. It suffices for reproducing the data to assume that the diquark radius is enhanced by 10%-45% in a dense nucleus because of the disturbance from the surrounding nucleons. It is suggested how such a change of the diquark scale could be distinguished from the recently proposed change in the scale of the whole nucleon.

  • 288. Fredriksson, Sverker
    On large transverse momentum production in high-energy proton-nucleus collisions1976In: Nuclear Physics B, ISSN 0550-3213, E-ISSN 1873-1562, Vol. 111, no 1, p. 167-177Article in journal (Refereed)
    Abstract [en]

    Experimental data from inclusive production of large pT hadronsin high-energy proton-nucleus collisions are analysed with emphasis on the influence of the size of the target nucleus. It is found that data at pT≤3 GeV/c are consistent with the hypothesis that the incoming proton collides "simultaneously" with all the nucleons in its way, resulting in an effective collision energy larger than the one expected in a single proton-nucleon hit. At pT > 3 GeV/c, data are in conflict with such a simple model, a result we think is a consequence of the dominance of hard parton collisions at very large pT.

  • 289. Fredriksson, Sverker
    On the production of hadrons with large transverse momenta in high-energy proton-proton and proton-nucleus collisions1976Doctoral thesis, comprehensive summary (Other academic)
  • 290. Fredriksson, Sverker
    Particle ratios in the central region of high-energy proton-proton collisions1975In: Nuclear Physics B, ISSN 0550-3213, E-ISSN 1873-1562, Vol. 84, no 1, p. 234-252Article in journal (Refereed)
    Abstract [en]

    Recent data from NAL on particle ratios ... large transverse momentum are analysed with emphasis on the surprising discovery that pions increase their dominance over heavier hadrons at increasing transverse momentum. It is argued that this is not a phase space or threshold effect but a dynamical feature that can be used to test theoretical models of multiparticle production. Most models of interest, such as for instance the parton, the hydrodynamical and the two-component model, may however be extended, in a simple-minded way, to kaon and antiproton production as to predict ratios of heavier to lighter hadrons to fall with increasing large transverse momentum.

  • 291. Fredriksson, Sverker
    Phenomenological relations between large-pT meson spectra1978In: Physical Review D. Particles and fields, ISSN 0556-2821, E-ISSN 1089-4918, Vol. 18, no 11, p. 4144-4151Article in journal (Refereed)
    Abstract [en]

    Recent data on the hadron ratios π+π-, K+π+, K-π-, and ηπ0 at large transverse momenta are shown to be consistent with predictions from a simple phenomenological two-component picture for large-pT production. The very-large-pT part of meson spectra is assumed to be dominated by particles that contain one of the incoming valence quarks, while small-and medium-pT mesons are built up mostly of quarks created in quark-antiquark pairs. Exceptions are K- and φ spectra, where for obvious reasons the very-large-pT component is missing. Simple relations between π, K, and η spectra are found. Predictions for the large-pT spectrum of φ mesons are presented.

  • 292.
    Fredriksson, Sverker
    Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.
    Preon prophecies by the standard model2003In: Beyond the desert 2003: proceedings of the Fourth Tegernsee International Conference on Particle Physics Beyond the Standard Model, Beyond 2003, Castle Ringberg, Tegernsee, Germany, 9 - 14 June 2003 / [ed] Hans Volker Klapdor-Kleingrothaus, Berlin: Encyclopedia of Global Archaeology/Springer Verlag, 2003, p. 211-223Conference paper (Refereed)
    Abstract [en]

    The Standard Model of quarks and leptons is, at first sight, nothing but a set of ad hoc rules, with no connections, and no clues to their true background. At a closer look, however, there are many inherent prophecies that point in the same direction: Compositeness in terms of three stable preons.

  • 293. Fredriksson, Sverker
    Recent results from the tube model for high-energy collisions with nuclei1978In: Proceedings of the topical meeting on recent developments in high-energy physics, Campione d'Italia, 3-7 October 1977 / [ed] Gianpaolo Bellini, Bologna: Compositor , 1978Conference paper (Refereed)
  • 294. Fredriksson, Sverker
    The collective tube model and how to disprove it1979In: First workshop on ultra-relativistic nuclear collisions: [LBL, May 21-24, 1979], Berkeley, Calif: Lawrence Berkeley National Laboratory , 1979Conference paper (Refereed)
  • 295. Fredriksson, Sverker
    The Emc effect as a diquark phenomenon1983Report (Other academic)
  • 296.
    Fredriksson, Sverker
    Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.
    The Stockholm diquark model1989In: Workshop on diquarks / [ed] Mauro Anselmino; Enrico Predazzi, Singapore: World Scientific and Engineering Academy and Society, 1989, p. 22-57Conference paper (Refereed)
  • 297. Fredriksson, Sverker
    Vad har kvarkarna för sig i atomkärnan?1985Other (Other (popular science, discussion, etc.))
  • 298. Fredriksson, Sverker
    Vakuum: mycket väsen för ingenting1985Other (Other (popular science, discussion, etc.))
  • 299. Fredriksson, Sverker
    et al.
    Ekelin, Svante
    New ideas on the proton-neutron differences in deep inelastic structure functions1985In: Physics Letters B, ISSN 0370-2693, E-ISSN 1873-2445, Vol. 162, no 4-6, p. 373-378Article in journal (Refereed)
    Abstract [en]

    It is shown how future data from deep inelastic scattering of charged leptons on protons and neutrons can be used to discriminate between the two main possible scale-breaking QCD effects - perturbative gluon processes and non-perturbative diquark formation. Current data from the Stanford Linear Accelerator Center and from CERN on the structure function combinations Fp2-Fn2, Fn2/Fp2 and σL/σT are in line with both the Stockholm diquark model and perturbative QCD, considering the low statistics as well as the possibility of a substantial normalisation error between the two data sets. This calls for a new high-statistics experiment on a deuterium target before any definite conclusions can be made.

  • 300. Fredriksson, Sverker
    et al.
    Eliam, Gad
    Berlad, Gideon
    Bergström, Lars
    High-energy collisions with atomic nuclei: the experimental results1987In: Physics reports, ISSN 0370-1573, E-ISSN 1873-6270, Vol. 144, no 4-5, p. 187-320Article in journal (Refereed)
3456789 251 - 300 of 956
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