Chinese Physics C > 1999, Vol. 23 > Issue(5): 409-416

Investigation of Fission Properties in the Reaction 25MeV/u⁴⁰Ar+²⁰⁹Bi

Institute of Modern Physics,The Chinese Academy of Sciences, Lanzhou 7300001 Department of Technical physics, Beijing University, Beijing 100871

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Abstract：
The distribution properties of the total fission kinehc energy and of the mass of fission fragments at different initial excitation energies of hot nuclei in the reaction 25MeV/u ⁴⁰Ar+ ²⁰⁹Bi are investigated. The initial excitation energies are obtained according to the linear momentum transfer. The experimental results show that the fission kinetic energy distribution is similar to the case of compound nuclei with lower excitation energy when the initial excitation energy of hot nuclei is below 380MeV. While the inihal excitation energy is above 380MeV, the most probable value of fission kinehc energy increases with the inihal excitahon energy. The fission energy spectra become asymmetric due to an enhancement of the yield at higher kinetic energies, and the width of mass distribution increases rapidly.

References

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Zheng Jiwen, Wu Enjiu, Xiao Zhigang, Zhang Chun, Yin Shuzhi, Wang Sufang, Jin Genming, Tan Jilian, Jin Weiyang, Song Mingtao, Li Zuyu, Wu Heyu, He Zhiyong, Yin Xu, Peng Xinping, Jiang Dongxing and Qian Xing. Investigation of Fission Properties in the Reaction 25MeV/u ⁴⁰Ar+ ²⁰⁹Bi[J]. Chinese Physics C, 1999, 23(5): 409-416.

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Received: 1998-04-21
Revised: 1900-01-01

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通讯作者:陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Investigation of Fission Properties in the Reaction 25MeV/u⁴⁰Ar+²⁰⁹Bi

Corresponding author:Zheng Jiwen,

Institute of Modern Physics,The Chinese Academy of Sciences, Lanzhou 7300001 Department of Technical physics, Beijing University, Beijing 100871

Received Date:1998-04-21

Accepted Date:1900-01-01

Available Online:1999-05-05

Abstract:The distribution properties of the total fission kinehc energy and of the mass of fission fragments at different initial excitation energies of hot nuclei in the reaction 25MeV/u⁴⁰Ar+²⁰⁹Bi are investigated. The initial excitation energies are obtained according to the linear momentum transfer. The experimental results show that the fission kinetic energy distribution is similar to the case of compound nuclei with lower excitation energy when the initial excitation energy of hot nuclei is below 380MeV. While the inihal excitation energy is above 380MeV, the most probable value of fission kinehc energy increases with the inihal excitahon energy. The fission energy spectra become asymmetric due to an enhancement of the yield at higher kinetic energies, and the width of mass distribution increases rapidly.

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Investigation of Fission Properties in the Reaction 25MeV/u⁴⁰Ar+²⁰⁹Bi

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