Il Nuovo Cimento D (Nuovo Cimento Soc Ital Fisica )

Publisher: Società italiana di fisica, Springer Verlag

Description

Discontinued in 1998.

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  • Website
    Nuovo Cimento della Società Italiana di Fisica - D: Condensed Matter, Atomic, Molecular and Chemical Physics, Biophysics website
  • Other titles
    Nuovo Cimento della Società italiana di fisica, [Sezione] D, Nuovo cimento della Società italiana di fisica., Condensed matter, atomic, molecular and chemical physics, biophysics, Condensed matter, atomic, molecular, and chemical physics, fluids, plasmas, biophysics
  • ISSN
    0392-6737
  • OCLC
    8724239
  • Material type
    Periodical, Internet resource
  • Document type
    Journal / Magazine / Newspaper, Internet Resource

Publisher details

Springer Verlag

  • Pre-print
    • Author can archive a pre-print version
  • Post-print
    • Author can archive a post-print version
  • Conditions
    • Author's pre-print on pre-print servers such as arXiv.org
    • Author's post-print on author's personal website immediately
    • Author's post-print on any open access repository after 12 months after publication
    • Publisher's version/PDF cannot be used
    • Published source must be acknowledged
    • Must link to publisher version
    • Set phrase to accompany link to published version (see policy)
    • Articles in some journals can be made Open Access on payment of additional charge
  • Classification
    ​ green

Publications in this journal

  • [Show abstract] [Hide abstract]
    ABSTRACT: A volume-preserving symplectic map is proposed to describe the magnetic field lines when the Taylor equilibriumis perturbed in a generic way. The standard scenario is observed by varying the perturbation strength, but the statistical properties in the chaotic regions are not simple due to the presence of boundaries and remnants of invariant structures. Simpler models of volume-preserving maps are proposed. The slowly modulated standard map captures the basic topological and statistical features. The diffusion is analytically described for large perturbations (above the break-up of the last KAM torus) in terms of correlation functions and for small perturbations using the adiabatic theory, provided that the modulation is sufficiently slow.
    Il Nuovo Cimento D 12/1998; 20(12):1795-1818.
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    ABSTRACT: This work reports the electronic structure of GaInAsSb quaternary alloy by recursion method. A five-orbital sp3s* per atom model was used in the tight-binding representation of the Hamiltonian. The local density of states (LDOS), integrated density of states (IDOS) and structural energy (ST.E) were calculated for Ga, In, As and Sb sites in Ga0.5 In0.5 As0.5 Sb0.5 and GaInAsSb lattice matched to GaAs and the same alloy lattice matched to GaSb. There are 216 atoms in our cluster arranged in a zincblend structure. The results are in good agreement with available information about the alloy.
    Il Nuovo Cimento D 12/1998; 20(12).
  • Il Nuovo Cimento D 10/1998; 20:1659.
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    ABSTRACT: A theoretical investigation has been made of obliquely propagating dustacoustic solitary waves in a magnetized dusty plasma which consists of a negatively charged cold dust fluid, Boltzmann-distributed electrons, and nonthermally distributed ions. The reductive perturbation method has been employed to derive the Kortewegde Vries (K-dV) equation which admits a solitary wave solution for small but finite amplitude limit. The solitary wave may change from compressive to rarefactive depending on the value of α (a parameter determining the number of nonthermal ions present in this plasma model). It is seen that for no background free electron there exist compressive (rarefactive) solitary waves when α ≤ (>)0.155 and that, as the number of the background free electrons increases, we need a higher value of α in order for rarefactve solitary waves to exist. The effects of obliqueness and external magnetic field on the nature of these compressive and rarefactive solitary waves are also discussed.
    Il Nuovo Cimento D 09/1998; 20(9).
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    ABSTRACT: A classical model of the hydrogen atom in a static electric field is studied, basing upon the work [ Hooker A. et al, {\it Phys. Rev. A}, 55 (1997) 4609 ]. In that work the electrons are supposed to move along Kepler orbits around the nucleus, while interacting with the external field. That classical model reproduces very well the true energy shift of the linear Stark effect. The agreement with the second order effect is poor. It is shown here that the results for the quadratic Stark effect may be considerably improved if the electrons are still allowed to move along classical trajectories, but whose initial conditions are statistically sampled from a distribution resembling the quantum mechanical one.
    Il Nuovo Cimento D 08/1998;
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    ABSTRACT: We review the predictions of the replica approach both for the statics and for the off-equilibrium dynamics. We stress the importance of the Cugliandolo-Kurchan off-equilibrium fluctuation-dissipation relation in providing a bridge between the statics and the dynamics. We present numerical evidence for the correctness of these relations. This approach allows an experimental determination of the basic parameters of the replica theory. PACS 61.20.LcTime-dependent properties-relaxation PACS 02.70.NsMolecular dynamics and particle methods PACS 64.70.PfGlass transitions PACS 01.30.EeMonographs and collections
    Il Nuovo Cimento D 07/1998; 20(7):1221-1228.
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    ABSTRACT: It is often considered that the linewidth, for a core level, or the edgewidth, for a band, is governed by the lifetime of the hole left upon excitation of the photoemitted electron. In most cases, the line profiles are actually driven by hardly controlled surface parameters. In the present paper, the particular case of semiconductors is considered: the presence of fixed-point charges, both along the surface and in the bulk, is shown to significantly contribute to linewidths (and edgewidths) in the photoemission process. A numerical treatment is presented in the specific case of η-type silicon. The effect of surface dipoles on photoemission peak profiles is discussed.
    Il Nuovo Cimento D 07/1998; 20(7-8).
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    ABSTRACT: The photoconductivity decay time constant τf was studied on the clean Si(110)-“16 × 2” surface and after adsorption of Al and Pb atoms. Significant changes of τf were observed after adsorption. Namely, τf increased about an order of magnitude and became close to the bulk decay time after adsorption on the “16 × 2” phase at room temperature. One could explain the observed results by changes in the surface electron distribution, when large energy gaps appear between bulk and surface states.
    Il Nuovo Cimento D 07/1998; 20(7-8).
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    ABSTRACT: In this work we present calculations of the Raman linewidth in 3C–SiC with different isotopic compositions which present non-trivial trends. Our results are discussed for both longitudinal and transverse modes. The temperature dependence of the linewidth of natural SiC is computed and compared with available experimental data. PACS 63.20Phonons in crystal lattices PACS 63.20.RyAnharmonic lattice modes PACS 31.15ArAb initio calculations PACS 31.15.EwDensity-functional theory PACS 01.30.EeMonographs and collections
    Il Nuovo Cimento D 07/1998; 20(7):923-930.
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    ABSTRACT: The elements of the design of the X-MOSS (X-ray magneto-optics and surface science) beamline, to be installed at a bending magnet of the ELETTRA synchrotron radiation facility, are presented. The beamline is intended for optical study (reflectivity and absorption) of low-dimensional systems, typically surfaces and interfaces, with emphasis on magnetic systems. The optical range will extend from visible up to > 1400 eV with full control of linear and circular polarisation. PACS 07.85.QeSynchrotron radiation instrumentation PACS 07.05.FbDesign of experiments PACS 78.20.LsMagneto-optical effects PACS 78.66Optical properties of specific thin films, surfaces, and low-dimensional structures: superlattices, quantum well structures, multilayers and microparticles PACS 01.30.EeMonographs and collections
    Il Nuovo Cimento D 01/1998; 20(7):1091-1101.
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    ABSTRACT: An explicit discretization scheme for the Boussinesq equation is developed and its (pseudo-) convergence and stability are investigated. This scheme is used to study the soliton properties in the model described by the Boussinesq equation. The emergence of soliton excitations out of prescribed multisoliton and nonsoliton initial conditions is also shown numerically.
    Il Nuovo Cimento D 01/1998; 20(1):1-17.
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    ABSTRACT: Summary In the granular systems of different-size particles, shaking leads to size segregation, where the larger particles rise to the top. In this work we simulate the segregation process with the details of the collision dynamics of the many-body system and provide a satisfactory result. We also find a threshold value for the shake amplitude, the vertical upward velocity, below which segregation does not occur, and provide a theoretical analysis for this threshold value.
    Il Nuovo Cimento D 01/1998; 20(9):1443-1448.
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    ABSTRACT: Amorphous ferromagnetic ribbons, with basic differences in production technique, in thermal stability and devetrification modality, were investigated to compare some of their magnetic, magnetoelastic and structural properties after repeated annealing cycles in vacuum. In particular, differences in structural relaxation, measured by Differential Scanning Calorimetry, were related to effects on magnetic permeability, magnetoelastic wave amplitude and crystallization occurrence.
    Il Nuovo Cimento D 01/1998; 20(1):63-71.
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    ABSTRACT: Summary Iron molybdenum phosphate glasses [xMoO3 · (0.6 -x)P2O5 · 0.4Li2O] :yFe2O3 with 0 ≤x ≤ 0.6 andy = 0.03 (mol%) prepared in ambient atmosphere using the melt quenching technique were studied by using DC electrical conductivity,57Fe Mössbauer and infrared spectroscopies. The DC conductivity depends on the MoO3 concentrationx. It was observed that, with increasingx, the ratio Fe2+ /(Fe3+ + Fe2+) and the DC conductivity increase. Infrared spectroscopy and X-ray powder diffraction indicate that a Li2 MoO4 crystalline phase is present for high MoO3 content samples (x = 0.5, 0.6).
    Il Nuovo Cimento D 01/1998; 20(2):209-220.