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  • Artikel: DFG Deutsche Nationallizenzen  (4)
  • 24.10.Cn  (3)
  • Copper(I) sulfur tellurium halides  (1)
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  • Artikel: DFG Deutsche Nationallizenzen  (4)
Materialart
Erscheinungszeitraum
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  • 1
    Digitale Medien
    Digitale Medien
    One-body dynamics modified by collective fluctuations (1988)
    Springer
    The European physical journal 331 (1988), S. 43-51 
    Details
    ISSN: 1434-601X
    Schlagwort(e): 24.10.Cn ; 24.60 ; 25.70
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract We show how the fluctuating part of the residual coupling between collective and intrinsic motion of a dissipative heavy-ion collision induces correlations in either subspace. They lead in general to a transport equation for the collective motion, and to a new term in the equation for the one-body density which describes collisions with the collective fluctuations. The resulting redistribution of the single-particle occupation numbers ρα and the evolution of the fluctuations are coupled with each other due to the dependence of the transition rates in the master equation on the fluctuations, and of the transport coefficients on ρα. Considering the special case of a long contact phase, we find the fluctuations to be most effective, with respect to a randomization of ρα, within a certain critical region where they pass from stable to unstable behaviour. Estimates are made for the corresponding relaxation times employing a schematic model.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01289429
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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    Artikel (Nationallizenzen)
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  • 2
    Digitale Medien
    Digitale Medien
    Self-consistent truncation of the BBGKY hierarchy on the two-body level (1992)
    Springer
    The European physical journal 342 (1992), S. 161-167 
    Details
    ISSN: 1434-601X
    Schlagwort(e): 24.10.Cn ; 25.70.−z
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract We present a coupled set of equations for the one-body density matrix and the two-body correlation function consistent with trace relations and conservation laws which provide an extension of correlation dynamics on the two-body level. The additional interaction terms are discussed in the context of time-dependent G-matrix theory and NQCD and studied numerically by one-dimensional calculations for colliding finite fermion systems.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01288464
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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    Artikel (Nationallizenzen)
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  • 3
    Digitale Medien
    Digitale Medien
    Correlation dynamics of finite fermion systems (1990)
    Springer
    The European physical journal 337 (1990), S. 175-183 
    Details
    ISSN: 1434-601X
    Schlagwort(e): 24.10.Cn ; 25.70.−z
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract The dynamical description of strongly interacting finite Fermi systems is based on coupled equations of motion for the one-body density matrixρ(11′) and the two-body correlation functionc 2(12, 1′2′) as obtained from the density-matrix hierarchy. The truncation schemes considered exceed the conventional Brueckner-Hartree-Fock scheme and also apply for nonstationary problems. In the limit of slow processes in time the equation of motion for the two-body correlation functionc 2 can be integrated in time and closed expressions can be given for the dynamical evolution ofρ(11′). When performing a Wigner transformation and adopting semiclassical limits this gives a transport equation of the Uehling-Uhlenbeck type for the one-body phase-space distributionf(x,p;t). Furthermore, in the small amplitude limit, we obtain a set of coupled equations for particle-hole (p-h),2p-2p, 2h-2h, 2p-2h, 1p-3h, 1h-3p amplitudes beyond the level of second RPA which provide a genuine basis for the description of giant resonances and their damping width.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01294289
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 4
    Digitale Medien
    Digitale Medien
    CuClS0.94Te1.06 und CuBrS0.92Te1.08, zwei neue Kupfer(I)-chalkogenhalogenide mit neutralen ∞1[STe]-Schrauben (1996)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 622 (1996), S. 853-857 
    Details
    ISSN: 0044-2313
    Schlagwort(e): Copper(I) sulfur tellurium halides ; chalcogen ; crystal structure ; Chemistry ; Inorganic Chemistry
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie
    Beschreibung / Inhaltsverzeichnis: CuClS0.94Te1.06 and CuBrS0.92Te1.08, Two New Copper(I) Chalcogen Halides Containing Neutral ∞1[STe] ScrewsCuClS0.94Te1.06 and CuBrS0.92Te1.08 are two new, isotypic compounds of general composition CuXYY′ (X = halide, Y, Y′ = chalcogen) with a mixed chalcogen substructure. They crystallize in the monoclinic system, space group P21/n (No. 14), a = 7.878(2), b = 4.727(1), c = 10.759(2) Å, β = 103.97(2)°, V = 388.8(2) Å3 (CuClS0.94Te1.06) and a = 8.043(3), b = 4.746(2), c = 11.240(4) Å, β = 103.46(3)°, V = 417.3(3) Å3 (CuBrS0.92Te1.08), both with Z = 4. The crystal structures are dominated by ordered ∞1[STe±0]-screws. From a crystal chemical point of view the sulfur and tellurium atoms are significantly different. The melting points are 341 °C (CuClS0.94Te1.06) and 336 °C (CuBrS0.92Te1.08). The compounds CuXYY′ (X = Cl, Br, I; Y, Y′ = S, Se, Te) are compared and discussed.
    Notizen: Mit CuClS0.94Te1.06 und CuBrS0.92Te1.08 wurden zwei neue, isotype Verbindungen der Zusammensetzung CuXYY′ (X = Halogenid, Y, Y′ = Chalkogen) mit gemischtem Chalkogenteilgitter erhalten. Sie kristallisieren monoklin, RG P21/n (Nr. 14) mit a = 7,878(2), b = 4,727(1) und c = 10,759(2) Å, β = 103,97(2)°, V = 388,8(2) Å3 (CuClS0.94Te1.06) bzw. a = 8,043(3), b = 4,746(2) und c = 11,240(4) Å, β = 103,46(3)°, V = 417,3(3) Å3 (CuBrS0.92Te1.08), jeweils mit Z = 4. Strukturbestimmendes Merkmal sind die geordneten ∞1[STe±0]-Schrauben. Kristallchemisch sind die Schwefel- und Telluratome deutlich unterschiedlich. Die Schmelzpunkte liegen bei 341 °C (CuClS0.94Te1.06) bzw. 336 °C (CuBrS0.92Te1.08). Die Strukturen von CuXYY′ (X = Cl, Br, I; Y, Y′ = S, Se, Te) werden verglichen und diskutiert.
    Zusätzliches Material: 2 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/zaac.19966220517
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