Symmetric/asymmetric uranium neutron-induced fission up to 200 MeV

被引：0
|
作者：
Maslov, VM [1 ]
机构：
[1] Joint Inst Nucl & Energy Res, Minsk 220109, BELARUS
来源：
PROCEEDINGS OF THE THIRD INTERNATIONAL CONFERENCE FISSION AND PROPERTIES OF NEUTRON-RICH NUCLEI | 2003年
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D O I：
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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：
The symmetric SL-mode and asymmetric lumped (S1+S2)-mode fission cross sections of 238-U(n,f) and 235-U(n,f) reactions are calculated up to 200 MeV within a statistica I model. For each U nuclide, emerging in U(n,xnf) reaction separate triaxial outer fission barrier is assumed for the SL-mode. To fit branching ratio of symmetric and asymmetric fission more fissions coming from higher fission chances, or more fissions from N-deficient nuclei are predicted. Damping of triaxial collective modes contribution to the level density at SL-mode outer saddle seems to be essential for the 238-U(n,f) branching ratio description.
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页码：521 / 526
页数：6
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