Fragment Anisotropy of Complete Fusion-Fission at Subbarrier Energies for the ^(11)B+^(238)U and ^(12)C+^(237)Np Reactions  

作　　者：ZHANG Huanqiao LIU Zuhua XU Jincheng QIAN Xing CHEN Shaolin LU Lixing 

机构地区：[1]China Institute of Atomic Energy,Beijing 102413

出　　处：《Chinese Physics Letters》1992年第6期297-300,共4页中国物理快报（英文版）

基　　金：Supported in part by the National Nature Science Foundation of China under the contract No.18975063。

摘　　要：Fission fragment angular distributions have been measured for the reactions ^(11)B+^(238)U,(12)C+^(237)Np at near-and sub-barrier energies,and ^(16)O+^(238)U at 90 MeV.The complete fusion-fission and transfer-fission were separated as components in the whole energy region in this experiment.The influence of pre-scission neutron emission on fragment anisotropies has been considered.This effect leads to increase of the anisotropies when compared with the results obtained under the assumption of first chance fission.However,the anomalous anisotropies still persist.

关 键 词：SEPARATED ASSUMPTION 

分 类 号：O57[理学—粒子物理与原子核物理]