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  • 1
    Digitale Medien
    Digitale Medien
    Towards a macroscopic generator coordinate method (1992)
    Springer
    The European physical journal 341 (1992), S. 267-274 
    Details
    ISSN: 1434-601X
    Schlagwort(e): 21.60.Ev ; 25.70.Lj ; 25.85.Ca
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract Collective quantities are defined as macroscopic statistical averages over many level crossing points where microscopic densities are redistributed. Accordingly, the generator coordinate method (GCM) is reconsidered. It is concluded that, contrary to earlier arguments, the macroscopically defined inertia parameter which appears in the GCM Hamiltonian has a finite value close to that obtained using traditional theories assuming the existence of the adiabatic BCS ground state.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01283535
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  • 2
    Digitale Medien
    Digitale Medien
    Random-phase approximation as a macroscopic description (1990)
    Springer
    The European physical journal 336 (1990), S. 253-258 
    Details
    ISSN: 1434-601X
    Schlagwort(e): 21.10.Pc ; 21.60.Jz ; 21.90.+f
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract Analysis of nuclear processes in terms of cross-sections averaged over the many microscopic channels, as in the “poor resolution” experiments, corresponds to a macroscopic level of description. In this paper energy-averaged strength function is considered. In order to determine the frequency dependence of this quantity statistically averaged single-particle density is introduced for which equations are obtained analogous to random phase approximation.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01292854
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  • 3
    Digitale Medien
    Digitale Medien
    Particle-liquid dynamics of nuclear deformations. 1 (1984)
    Springer
    The European physical journal 316 (1984), S. 217-223 
    Details
    ISSN: 1434-601X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract Equations of a combined, liquid plus particle model are derived which accounts consistently for the short-range liquid properties of nuclei as well as for the long-range quasi-particle behavior. Macroscopic quantities are defined as statistical averages and their dynamics is determined by an Euler-type equation, which contains a term due to the interaction with the gas component, and also by the continuity equation. For the quasi-particle component the full quantal treatment is kept in the form of the Liouville equation with a time-dependent external potential related to the bulk density. It may include the residual quasi-particle interaction. It is suggested that the solution of the coupled dynamics is facilitated by the explicit use of an effective sharp nuclear surface as a dynamical variable.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01412266
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  • 4
    Digitale Medien
    Digitale Medien
    Semiclassical interpretation of the gross-shell structure in deformed nuclei (1977)
    Springer
    The European physical journal 283 (1977), S. 269-285 
    Details
    ISSN: 1434-601X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract An analysis of the classical closed orbits in the infinitely deep elongated ellipsoidal well is given with respect to their relevance to the gross-shell structure of the single-particle spectra in deformed nuclei. It is shown that the deformed-shape gross-shells responsible for the ground state deformations, as well as those responsible for the fission intermediate states, find a reasonable explanation in terms of the semiclassical three-dimensional quantization involving the planar orbits in the axis-of-symmetry plane and the simplest three-dimensional orbits which appear at large distortions. The former are found important for the ground state shapes. The results are also compared with the harmonic oscillator model.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01407208
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  • 5
    Digitale Medien
    Digitale Medien
    Macroscopic rotation of cold nuclei (1978)
    Springer
    The European physical journal 289 (1978), S. 77-81 
    Details
    ISSN: 1434-601X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract Using the statistical model, an estimate is obtained for the critical angular momentum when the rotational band ofγ-rays ends up in reactions with heavy ions. A model of classical non-quantized rotation is proposed for angular momenta exceeding the critical value. Estimates for the intensity ofγ-radiation and the descend time along the yrast-line proceeding the quantal rotation are given.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01408498
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  • 6
    Digitale Medien
    Digitale Medien
    Intermediate structure in heavy ion scattering (1983)
    Springer
    The European physical journal 310 (1983), S. 123-128 
    Details
    ISSN: 1434-601X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract It is shown that the nucleon-state structure in the cold, strongly deformed nucleus formed when two nuclei collide may be responsible for anomalies such as those observed in recent experiments.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01433621
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  • 7
    Digitale Medien
    Digitale Medien
    Shell corrections for finite depth potentials (1978)
    Springer
    The European physical journal 286 (1978), S. 291-297 
    Details
    ISSN: 1434-601X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract An improved version of the shell correction method is suggested valid for use with finite depth potentials without referring to unbound part of the spectrum. The improved values for the shell corrections are quite stable with respect to the variation of free parameters. Comparison with earlier calculations is given.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01408259
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  • 8
    Digitale Medien
    Digitale Medien
    Diffraction at backangles (1978)
    Springer
    The European physical journal 289 (1978), S. 65-75 
    Details
    ISSN: 1434-601X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract The backangle differential cross section is analyzed using an improved analytical approach. The differential cross section smoothed over the frequent angular oscillations is shown to be an oscillating function of the energy in the backangle region. Analogy with the radar scattering of light is pointed out. Angular and energy amplitude functions are introduced and discussed on the basis of general arguments and some simple examples.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01408497
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  • 9
    Digitale Medien
    Digitale Medien
    A TI-59 model for nuclear reactions between complex nuclei (1979)
    Springer
    The European physical journal 290 (1979), S. 377-384 
    Details
    ISSN: 1434-601X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract The role of the fluctuating part of the reaction amplitude in the angular distribution and in the energy dependence of the backangle cross section is investigated.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01408399
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  • 10
    Digitale Medien
    Digitale Medien
    Energy- andN-averagings in the shell correction method (1979)
    Springer
    The European physical journal 293 (1979), S. 337-342 
    Details
    ISSN: 1434-601X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract It is shown that a difference exists between the mean values of the total single-particle energies obtained by averaging over the nucleon numberN and over the phase-space distributions (the energy-averaging) due to the symmetry of the single-particle Hamiltonian. This difference could lead to significant corrections in fitting the nuclear masses involving the droplet model.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01435276
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