近垒和垒下重离子熔合裂变碎片各向异性的异常

原子核物理评论 , 2000, 17(1): 1-5. doi: 10.3969/j.issn.1007-4627.2000.01.002

近垒和垒下重离子熔合裂变碎片各向异性的异常

张焕乔 ^1, , 刘祖华 ^2, , 许谨诚 ^3, , 吕骏 ^4, , 钱兴 ^5, , 阮明 ^6, , 谯愚 ^7, , 林承键 ^8, , 徐侃 ^9,

1.中国原子能科学研究院，北京 102413

2.中国原子能科学研究院，北京 102413

3.中国原子能科学研究院，北京 102413

4.中国原子能科学研究院，北京 102413

5.中国原子能科学研究院，北京 102413

6.中国原子能科学研究院，北京 102413

7.中国原子能科学研究院，北京 102413

8.中国原子能科学研究院，北京 102413

9.中国原子能科学研究院，北京 102413

基金项目: 核工业科学基金(Y4120192600) 国家自然科学基金(85163,18975063,19275067)

关键词：熔合裂变 , 碎片各向异性 , 激发函数 , 均方自旋 , 预平衡裂变

Anomlous Anisotropies of Fission Fragments in Near- and Sub-barrier Fusion-fission Reactions

Keywords： fusion-fission , fragment anisotropy , excitation function , mean square spin , preequilibriumfission

系统总结了研究近垒和垒下重离子熔合裂变反应碎片各向异性的异常的结果，提出一个新的预平衡裂变模型，成功地解释了碎片各向异性的异常现象．但对异常宽峰结构不能说明，有待进一步研究．

Systematic summary on the anomalous anisotropies of fission fragments in near- and sub-bar-rier fusion-fission reactions is presented. A new version of the preequilibrium fission model is put forwardto explain the anomalous anisotropies of fission fragments, except the bump of anomaly. Further study isstill needed.

参考文献

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