Variation of transport coefficients for average fission dynamics with temperature and shape

Details Variation of transport coefficients for average fission dynamics with temperature and shape Variation of transport coefficients for average fission dynamics with temperature and shape

1996-04-17

arxiv.org/abs/nucl-th/9604024v3

Nucl.Phys. A612 (1997) 1-25

Physics

Nuclear Physics

Nuclear Theory

23 pages, including figures, Latex plus 11 postscript files for figures; home page: http://www.physik.tu-muenchen.de/tumphy/

Scientific paper

10.1016/S0375-9474(96)00275-8

We study slow collective motion at finite thermal excitations on the basis of linear response theory applied to the locally harmonic approximation. The transport coefficients for average motion, friction \gamma, inertia M and the local stiffness C are computed along a fission path of Th-224 within a quasi-static picture. The inverse relaxation time \beta=\gamma/M and the effective damping rate \eta=\gamma/(2\sqrt{M|C|}) are found to increase with temperature, but do not change much with the collective variable. The values found for \eta and \beta as well as their behavior with temperature are in accord with experimental findings.

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