Neutron-neutron angular correlations in spontaneous fission of 252Cf

被引：24
|
作者：
Gagarski A.M. [1 ]
Guseva I.S. [1 ]
Sokolov V.E. [1 ]
Val'ski G.V. [1 ]
Petrov G.A. [1 ]
Krinitsin D.O. [1 ]
Nikolaev D.V. [1 ]
Zavarukhina T.A. [1 ]
Petrova V.I. [1 ]
机构：
[1] St. Petersburg Nuclear Physics Institute, Russian Academy of Sciences, Gatchina
来源：
Bull. Russ. Acad. Sci. Phys. | 2008年 / 6卷 / 773-777期
基金：
俄罗斯基础研究基金会;
关键词：
Fission reactions;
D O I：
10.3103/S1062873808060130
中图分类号：
O571 [原子核物理学];
学科分类号：
0827 ; 082701 ;
摘要：
An experiment has been carried out to study neutron-neutron angular correlations in spontaneous fission of 252Cf. Angular dependences of the number of neutron-neutron coincidences obtained in the experiment were compared with the results of the Monte Carlo calculations for various neutron detection thresholds in the range 425-1600 keV. It was inferred that 10-11% of the total number of prompt neutrons from 252Cf (s.f.) in the laboratory system were emitted isotropically and may probably be interpreted as neutrons directly associated with the instant of scission of the nucleus. The analysis allowed their energy distribution to be determined as well. A similar method was also used to describe the angular correlation of prompt neutrons that accompanied the reaction 235 U(nth,f). © Allerton Press, Inc. 2008.
引用
收藏
页码：773 / 777
页数：4
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