Chinese Physics C > 1996, Vol. 20 > Issue(S2): 187-195

Multichannel Fission Model Applied to^233,235,238U(n,f)

Department of Technical Physics, Peking University, Beijing, China

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Abstract：
In the frame of the multichannel fission and random neck rupture model, the fragment mass, average kinetic energy distributions, and the neutron multiplicities of the neutron-induced fissions ^233,235,238U are calculated covering the incident neutron energy range from thermal to 6 MeV. The theoretical results are in accord with the experimental data. The dependence of the fission channel probability on the excitation energy has been investigated.
- random neck rupture,
- multichannel fission model,
- fission mechanism

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[2]	TIAN Jian,WANG Ning,YE Wei. Langevin analysis of fission excitation functions induced by protons. Chinese Physics C, 2015, 39(3): 034102.doi:10.1088/1674-1137/39/3/034102
[3]	SHU Neng-Chuan,JIA Min,CHEN Yong-Jing,LIU Ting-Jin. Prompt fission neutron spectra of n+²³⁵U above the (n,nf) fission threshold. Chinese Physics C, 2015, 39(5): 054101.doi:10.1088/1674-1137/39/5/054101
[4]	Muhammad Ikram,Zafar Yasin,Warda Iram,Shahida Jabeen. Cascade-exciton model analysis of mass dependence of pion-induced fission. Chinese Physics C, 2014, 38(7): 076101.doi:10.1088/1674-1137/38/7/076101
[5]	SUN Qian,SHANGGUAN Dan-Hua,BAO Jing-Dong. A dumbbell model with five parameters describing nuclear fusion or fission. Chinese Physics C, 2013, 37(1): 014102.doi:10.1088/1674-1137/37/1/014102
[6]	CHEN Yong-Jing,JIA Min,TAO Xi,QIAN Jing,LIU Ting-Jin,SHU Neng-Chuan. Calculation of prompt fission neutron spectra for²³⁵U(n,f). Chinese Physics C, 2012, 36(4): 322-328.doi:10.1088/1674-1137/36/4/005
[7]	SONG Yu-Shou,Margaryan A,HU Bi-Tao,TANG Li-Guang. Performance of the low pressure MWPCs for fission fragments under a high background. Chinese Physics C, 2011, 35(8): 758-762.doi:10.1088/1674-1137/35/8/011
[8]	Zafar Yasin,Warda Iram,Muhammad Asghar,Ikram Shahzad. Cascade-exciton model analysis of level density parameter dependence in proton induced fission cross sections of some sub-actinide nuclei. Chinese Physics C, 2011, 35(11): 1013-1016.doi:10.1088/1674-1137/35/11/006
[9]	DONG Jian-Min,ZHANG Hong-Fei,ZUO Wei,LI Jun-Qing. Unified fission model for proton emission. Chinese Physics C, 2010, 34(2): 182-185.doi:10.1088/1674-1137/34/2/005
[10]	WANG Kun,MA Yu-Gang,ZHENG Qing-Shan,CAI Xiang-Zhou,FANG De-Qing,FU Yao,LU Guang-Cheng,TIAN Wen-Dong,WANG Hong-Wei. Temperature dependent fission fragment distribution in the Langevin equation. Chinese Physics C, 2009, 33(S1): 119-122.doi:10.1088/1674-1137/33/S1/038
[11]	TIAN Jun-Long,LI Xian,WU Xi-Zhen,LI Zhu-Xia,YAN Shi-Wei. Understanding of the dissipation mechanism in ternary fission for the system¹⁹⁷Au+¹⁹⁷Au. Chinese Physics C, 2009, 33(S1): 109-112.doi:10.1088/1674-1137/33/S1/035
[12]	YUAN Shuang-Gui,XU Yan-Bing,DING Hua-Jie,YANG Wei-Fan,NIU Yan-Ning,XIAO Yong-Hou. β-delayed fission of²²⁸Ac. Chinese Physics C, 2008, 32(S2): 53-55.
[13]	LIU Ting-Jin,SUN Zheng-Jun,SHU Neng-Chuan. Systematics on fission fragment mass distribution of neutron induced 235U fission. Chinese Physics C, 2008, 32(7): 556-560.doi:10.1088/1674-1137/32/7/009
[14]	Liu Guoxing,Chen Keliang,Yu Xian,Dai Guangxi. Fission Angular Distributions for the Incomplete Fusion Reactions. Chinese Physics C, 1997, 21(S3): 35-42.
[15]	Fan Tieshuan,Hu Jimin,Bao Shanglian. Multichannel Fission Model Applied to^223,235,238U (n,f). Chinese Physics C, 1996, 20(5): 422-429.
[16]	Liu Zhuhua,Xu Jincheng,Zhang Huanqiao,Qian Xing,Qiao Yu,Lin Chengjian,Xu Kan. Subbarrier Complete Fusion-Fission Reactions of¹⁶O+²³²Th. Chinese Physics C, 1994, 18(S2): 121-128.
[17]	Fan Tieshuan,Hu Jimin,Bao Shanglian. The Multichannel Fission Model Applied to²³⁵U(n,f). Chinese Physics C, 1994, 18(S1): 47-55.
[18]	Dai Guangxi. The Shape and Potential of Hot Nuclei in Symmetric Ternary Fission. Chinese Physics C, 1992, 16(S3): 305-311.
[19]	Liu Guoxing,Chen Keliang,Wang Sufang,Cai Wei. Angular Distributions of Fission-fragments in Interactions of¹²C Ions with Various Targets. Chinese Physics C, 1988, 12(S2): 209-218.
[20]	Dai Guangxi,Li Weisheng. Exploration of Optimum Shape in Symmetric Fission. Chinese Physics C, 1988, 12(S4): 399-404.

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Fan Tieshuan, Hu Jimin and Bao Shanglian. Multichannel Fission Model Applied to ^233,235,238U(n,f)[J]. Chinese Physics C, 1996, 20(S2): 187-195.

Fan Tieshuan, Hu Jimin and Bao Shanglian. Multichannel Fission Model Applied to ^233,235,238U(n,f)[J]. Chinese Physics C, 1996, 20(S2): 187-195. shu

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Received: 1995-04-03

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Supported by the Foundation from the Ph.D. Program of High Education of China and Nuclear Science Foundation of China National Nuclear Corporation.

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沈阳化工大学材料科学与工程学院沈阳 110142

Multichannel Fission Model Applied to^233,235,238U(n,f)

Department of Technical Physics, Peking University, Beijing, China

Received Date:1995-04-03

Fund Project:Supported by the Foundation from the Ph.D. Program of High Education of China and Nuclear Science Foundation of China National Nuclear Corporation.

Abstract:In the frame of the multichannel fission and random neck rupture model, the fragment mass, average kinetic energy distributions, and the neutron multiplicities of the neutron-induced fissions^233,235,238U are calculated covering the incident neutron energy range from thermal to 6 MeV. The theoretical results are in accord with the experimental data. The dependence of the fission channel probability on the excitation energy has been investigated.