Effect of Fission Path on Prescission Particle Emission

Ye Wei; Shen Wenqing; Feng Jun; Ma Yugang; Wang Jiansong; Cai Xiangzhou; Wu Xizhen; Feng Renfa; Lu Zhongdao

Chinese Physics C> 1998, Vol. 22> Issue(7) : 639-645

Effect of Fission Path on Prescission Particle Emission

Shanghai Institute of Nuclear Research,The Chinese Academy of Science,Shanghai 2018001 Chinese Institute of Atomic Energy,Beijing 102413

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Abstract：
The elapsed time of system from saddle to scission and the ratio of particle emission from saddle to scission to presaddle emission as a function of mass of fissioning system were studied based on the diffusion model. A possible interpretation for the dependence of prescission particle emission on fission fragment mass asymmetry is given. The analysis shows that the above two relations can be ascribed to the fissioning path effect.

References

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[2]	YE Wei . Particle Evaporation in the Fission Process of Nuclei ^100,104Sn. Chinese Physics C, 2006, 30(3): 217-219.
[3]	MAO Ying-Chen , YE Wei , REN Zhong-Zhou . Effect of Deformation on Isospin Effect of Pre-scission Particle Emission. Chinese Physics C, 2006, 30(5): 423-427.
[4]	YE Wei . Dependence of Isospin Effects of Particle Evaporation on the Nuclear Shell Structure. Chinese Physics C, 2005, 29(3): 268-272.
[5]	YE Wei . Dependence of Isospin Effect in the Multiplicity of Pre-Scission Particles on the Angular Momentum. Chinese Physics C, 2004, 28(6): 611-616.
[6]	YE Wei . Influence of Angular Momentum on Shell Effects of Pre-scission Particle Emission of a Light Closed Shell Nucleus ¹³²Sn. Chinese Physics C, 2004, 28(2): 181-185.
[7]	YE Wei . Effects of Isospin on Multiplicity of Prescission Particles of Light Fissioning Systems. Chinese Physics C, 2004, 28(1): 73-77.
[8]	WEN Wan-Xin , JIN Gen-Ming . Influence of Complex Particle Emission on Properties of Giant Dipole Resonance of Hot Nuclei. Chinese Physics C, 2003, 27(1): 44-47.
[9]	YE Wei . Isotopic Effects in Prescission Particle Emission. Chinese Physics C, 2003, 27(3): 233-237.
[10]	YE Wei . Effects of Shell on Pre-Scission Particle Emission. Chinese Physics C, 2003, 27(9): 798-802.
[11]	YE Wei . Effect of Rotational Degree of Freedom on the Enhanced Prescission Particle Emission in 10.6MeV/u ⁸⁴Kr+²⁷Al Reaction. Chinese Physics C, 2002, 26(1): 52-57.
[12]	YE Wei , SHEN WenQing . Effect of Deformation on Prescission Particle Emission in the Reaction of 10.6 MeV/u ⁸⁴Kr+²⁷Al. Chinese Physics C, 2000, 24(10): 945-948.
[13]	Zheng Jiwen , Wu Enjiu , Zhang Chun , Xiao Zhigang , Wang Sufang , Yin Shuzhi , Jin Genming , Tan Jilian , Jin Weiyang , Song Mingtao , Li Zuyu , Wu Heyu , He Zhiyong , Yin Xu , Peng Xinping , Jiang Dengxing , Qian Xing . Measurement of Fission Time Scale and Excitation Energy at Scission for 25MeV/u ⁴⁰Ar+²⁰⁹Bi Fission Reaction. Chinese Physics C, 1999, 23(10): 946-953.
[14]	Ye Wei , Shen Wenqing , Lu Zhongdao , Feng Jun , Ma Yugang , Wang Jiansong . Effect of Angular Momentum on Prescission Particle Multiplicity for the Reaction of 10.6MeV/u ⁸⁴Kr on ²⁷Al. Chinese Physics C, 1998, 22(3): 265-270.
[15]	Wang Zhisong , Huo Yukun . Preequilibrium Neutron Emissions from Nucleus-Nucleus Collisions in Fermi Domain. Chinese Physics C, 1994, 18(9): 848-852.
[16]	CHEN Ting-Yang , YAO Nai-Guo , HE Mao . THE CORRECTIONS OF CHARGED PARTICLE TRACKS IN A FORWARD SPECTROMETER. Chinese Physics C, 1990, 14(10): 865-870.
[17]	SONG Shi-Zhan . PROTONS AND ALPHA PARTICLES EMITTED FROM FISSION INDUCED BY 720MeV ¹²C ON ²³²Th. Chinese Physics C, 1985, 9(2): 200-206.
[18]	MIAO Rong-Zhi , WANG Zheng-Da . THE EFFECT OF DEFORMATION AT SCISSION POINT FOR THE CALCULATION OF EXCITATION ENERGY OF FRAGMENTS IN FUSION-FISSION AND QUASI-FISSION INDUCED BY HEAVY-IONS. Chinese Physics C, 1985, 9(6): 751-757.
[19]	DAI Guang-Xi , WANG Zheng-Da . THE SHAPE OF FISSION SCISSION POINT. Chinese Physics C, 1985, 9(5): 622-624.
[20]	FAN XI-MING , CHAI FA-HE , HU JI-MING . A MODEL FOR THE DETERMINATION OF FISSION SCISSION POINT CONFIGURATION. Chinese Physics C, 1983, 7(6): 735-742.

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Ye Wei, Shen Wenqing, Feng Jun, Ma Yugang, Wang Jiansong, Cai Xiangzhou, Wu Xizhen, Feng Renfa and Lu Zhongdao. Effect of Fission Path on Prescission Particle Emission[J]. Chinese Physics C, 1998, 22(7): 639-645.

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Received: 1900-01-01
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沈阳化工大学材料科学与工程学院沈阳 110142

Effect of Fission Path on Prescission Particle Emission

Corresponding author: Ye Wei,

Shanghai Institute of Nuclear Research,The Chinese Academy of Science,Shanghai 2018001 Chinese Institute of Atomic Energy,Beijing 102413

Received Date: 1900-01-01

Accepted Date: 1900-01-01

Available Online: 1998-07-05

Abstract: The elapsed time of system from saddle to scission and the ratio of particle emission from saddle to scission to presaddle emission as a function of mass of fissioning system were studied based on the diffusion model. A possible interpretation for the dependence of prescission particle emission on fission fragment mass asymmetry is given. The analysis shows that the above two relations can be ascribed to the fissioning path effect.

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Effect of Fission Path on Prescission Particle Emission

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