DYNAMICS OF THE THERMAL DECAY OF A METASTABLE SYSTEM OVER A MULTIPLE-HUMPED BARRIER

被引：6
作者：
GONTCHAR, II
FROBRICH, P
机构：
[1] RAILWAY ENGN INST, 644046 OMSK, RUSSIA
[2] FREE UNIV BERLIN, FACHBEREICH PHYS, W-1000 BERLIN 33, GERMANY
来源：
NUCLEAR PHYSICS A | 1994年 / 575卷 / 02期
关键词：
D O I：
10.1016/0375-9474(94)90190-2
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
Aiming at the investigation of fission of hot nuclei in a situation where shell effects are not yet melted a method is developed which allows to match a dynamical (Langevin-Monte Carlo) and a statistical treatment of the thermal decay of a metastable system in the presence of a multiple-humped barrier. Novel analytical formulae for the quasistationary decay rate without and with a competing mode (e.g. neutron emission) are derived. These formulae are shown to be in agreement with the long-time limit of the corresponding dynamical decay rates obtained by means of Langevin-Monte Carlo simulation.
引用
收藏
页码：283 / 296
页数：14
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