Modelling the widths of fission observables in GEF

The widths of the mass distributions of the different fission channels are traced back to the probability distributions of the corresponding quantum oscillators that are coupled to the heat bath, which is formed by the intrinsic degrees of freedom of the fissioning system under the influence of pair...

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Main Authors: Schmidt K.-H., Jurado B.
Format: Article
Language:English
Published: EDP Sciences 2013-03-01
Series:EPJ Web of Conferences
Online Access:http://dx.doi.org/10.1051/epjconf/20134206005
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author Schmidt K.-H.
Jurado B.
author_facet Schmidt K.-H.
Jurado B.
author_sort Schmidt K.-H.
collection DOAJ
description The widths of the mass distributions of the different fission channels are traced back to the probability distributions of the corresponding quantum oscillators that are coupled to the heat bath, which is formed by the intrinsic degrees of freedom of the fissioning system under the influence of pairing correlations and shell effects. Following conclusion from stochastic calculations of Adeev and Pashkevich, an early freezing due to dynamical effects is assumed. It is shown that the mass width of the fission channels in low-energy fission is strongly influenced by the zero-point motion of the corresponding quantum oscillator. The observed variation of the mass widths of the asymmetric fission channels with excitation energy is attributed to the energy-dependent properties of the heat bath and not to the population of excited states of the corresponding quantum oscillator.
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spelling doaj.art-4d21a4398e7b4c549b4057c9f9d211972022-12-21T23:15:57ZengEDP SciencesEPJ Web of Conferences2100-014X2013-03-01420600510.1051/epjconf/20134206005Modelling the widths of fission observables in GEFSchmidt K.-H.Jurado B.The widths of the mass distributions of the different fission channels are traced back to the probability distributions of the corresponding quantum oscillators that are coupled to the heat bath, which is formed by the intrinsic degrees of freedom of the fissioning system under the influence of pairing correlations and shell effects. Following conclusion from stochastic calculations of Adeev and Pashkevich, an early freezing due to dynamical effects is assumed. It is shown that the mass width of the fission channels in low-energy fission is strongly influenced by the zero-point motion of the corresponding quantum oscillator. The observed variation of the mass widths of the asymmetric fission channels with excitation energy is attributed to the energy-dependent properties of the heat bath and not to the population of excited states of the corresponding quantum oscillator.http://dx.doi.org/10.1051/epjconf/20134206005
spellingShingle Schmidt K.-H.
Jurado B.
Modelling the widths of fission observables in GEF
EPJ Web of Conferences
title Modelling the widths of fission observables in GEF
title_full Modelling the widths of fission observables in GEF
title_fullStr Modelling the widths of fission observables in GEF
title_full_unstemmed Modelling the widths of fission observables in GEF
title_short Modelling the widths of fission observables in GEF
title_sort modelling the widths of fission observables in gef
url http://dx.doi.org/10.1051/epjconf/20134206005
work_keys_str_mv AT schmidtkh modellingthewidthsoffissionobservablesingef
AT juradob modellingthewidthsoffissionobservablesingef