Fission Measurement on 5.5 to 22 MeV/A <sup>28</sup>Si + <sup>197</sup>Au Systems (I) Linear Momentum Transfer and Angular Distribution off Reaction Plane

Dai Guangxi; Qi Yujin; Zheng Jiwen; Liu Ximing; Chen Yuanda; R. Stokstad; J. Pouliot; A. Harmon; D. Digregorio

Chinese Physics C> 1990, Vol. 14> Issue(S4) : 399-406

Fission Measurement on 5.5 to 22 MeV/A ²⁸Si + ¹⁹⁷Au Systems (I) Linear Momentum Transfer and Angular Distribution off Reaction Plane

1 Institute of Modem Physics, Chinese Academy of Sciences, Lanzhou, Gansu, China;
2 Lawrence Berkeley Laboratory, Berkeley, USA

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The velocities and angular distributions of correlated fission fragments emitted from reaction of ¹⁹⁷Au bombarded by a ²⁸Si beam with energies from 5.5 to 21.7 MeV/A are measured. The results show that when the incident energy is larger than 10 MeV/A, the incomplete fusion-fission (ICF) associated with incomplete linear momentum transfer (LMT) appears. Furthermore, when E_cm > 200 MeV, as a companion of ICF, the sequential fission (SF) with lower LMT than that of ICF, has apparent yields. By comparing the difference of LMT values from ICF and SF, the ratio of SF over total fission cross-section has been obtained. Moreover, the angular distribution off the reaction plane of one fragment and its standard deviation have been obtained. It seems that there is a general linear relationship between the deviation and excitation energy per nucleon in heavier composite systems.

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[2]	WANG Fan , CHEN Xiang-Song , SUN Wei-Min , . Nucleon internal structure: a new set of quark, gluon momentum, angular momentum operators and parton distribution functions. Chinese Physics C, 2009, 33(12): 1197-1204. doi: 10.1088/1674-1137/33/12/023
[3]	TIAN Jun-Long , LI Xian , WU Xi-Zhen , LI Zhu-Xia , YAN Shi-Wei . Understanding of the dissipation mechanism in ternary fission for the system ¹⁹⁷Au+¹⁹⁷Au. Chinese Physics C, 2009, 33(S1): 109-112. doi: 10.1088/1674-1137/33/S1/035
[4]	Khudair Falih , ZHANG Jin-Fu , BAI Hong-Bo . Mixed symmetry states and isospin excitation in the N=Z nucleus ²⁸Si. Chinese Physics C, 2009, 33(S1): 46-48. doi: 10.1088/1674-1137/33/S1/015
[5]	ZHAI Chen-Yang , SUN Wei-Li , Efrem S , ZHANG Ben-Ai . ²⁸Si-Nucleon Scattering Analysis by the Coupled-Channel Optical Model with Dispersion Relation. Chinese Physics C, 2007, 31(3): 240-246.
[6]	DUAN Li-Min , WU He-Yu , JIN Gen-Ming , WANG Su-Fang , LI Zu-Yu , WEI Zhi-Yong , ZHANG Bao-Guo , WANG Hong-Wei , XIAO Zhi-Gang , LIU Yong-Ying , HU Pei-Gang , LU Zhao-Hui , TIAN Wen-Dong , GOU Quan-Bu . Excitation Energy and Temperature of Compound Nuclei in the Reaction of 35MeV/u ⁴⁰Ar+¹⁹⁷Au. Chinese Physics C, 2003, 27(2): 118-123.
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[8]	WEI Zhi-Yong , DUAN Li-Min , JIN Gen-Ming , WU He-Yu , LI Zu-Yu , SHEN Wen-Qing , XI Hong-Fei , ZHU Yong-Tai , ZHANG Bao-Guo , WANG Hong-Wei , XIAO Zhi-Gang , LIU Yong-Ying , , . Freeze-Out Density of the 35MeV/u ⁴⁰Ar+¹⁹⁷Au Reaction. Chinese Physics C, 2001, 25(9): 839-844.
[9]	LIU Jian-Feng , ZHAO Wei-Juan , WANG Feng-Ge , SU Zong-Di . Study on γ-Ray Strength Functions and Energy Spectra in the Neutron Radiative Capture of ¹⁹⁷Au. Chinese Physics C, 2001, 25(10): 994-1001.
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[11]	He Zhiyong , Li Zuyu , Duan Limin , Jin Genming , Wu Heyu , Dai Guangxi , Li Zhankui , Zhang Baoguo , Wen Wanxin , Qi Yujin . In-plane and Out-of-plane Emission of Light Charged Particle from ⁴⁰Ar+¹⁹⁷Au Collisions at 25 MeV/u. Chinese Physics C, 1996, 20(S2): 129-134.
[12]	Wu Heyu , Jin Genming , Li Zuyu , Dai Guangxi , Qi Yujin , Luo Qingzheng , He Zhiyong , Duan Limin , Zhang Baoguo , Dang Bingrong , Wen Wanxin . Relation Between Temperature and Excitation Energy of Hot Nuclei in the Reaction of ⁴⁰Ar＋¹⁹⁷Au at 25MeV/u. Chinese Physics C, 1995, 19(7): 591-597.
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[17]	ZHAO You-Xiong , GUO Zhong-Yan , ZHU Yong-Tai , ZHAN Wen-Long , HU Xiao-Qing , XI Hong-Fei , LIU Guan-Hua , ZHOU Jian-Qun , FENG En-Pu , YIN Shu-Zhi , WEI Zhi-Yong , Fan En-Jie , MA Yu-Gang . The Study of α Emission Induced by 46.7MeV/u ¹²C on ⁵⁸Ni、¹¹⁵In and ¹⁹⁷Au. Chinese Physics C, 1992, 16(11): 1022-1029.
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[19]	DAI Guang-Xi , QI Yu-Jin , ZHENG Ji-Wen , LIU Xi-Ming , . FISSION MEASUREMENT ON 5.5 TO 21.7MeV/A ²⁸Si+¹⁹⁷Au SYSTEM (Ⅱ) ANGULAR DISTRIBUTION OF ICF AND SF. Chinese Physics C, 1990, 14(8): 739-744.
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Dai Guangxi, Qi Yujin, Zheng Jiwen, Liu Ximing, Chen Yuanda, R. Stokstad, J. Pouliot, A. Harmon and D. Digregorio. Fission Measurement on 5.5 to 22 MeV/A ²⁸Si + ¹⁹⁷Au Systems (I) Linear Momentum Transfer and Angular Distribution off Reaction Plane[J]. Chinese Physics C, 1990, 14(S4): 399-406.

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Received: 1989-05-29

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Supported by the National Natural Science Foundation of China.

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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

Fission Measurement on 5.5 to 22 MeV/A ²⁸Si + ¹⁹⁷Au Systems (I) Linear Momentum Transfer and Angular Distribution off Reaction Plane

1 Institute of Modem Physics, Chinese Academy of Sciences, Lanzhou, Gansu, China;

2 Lawrence Berkeley Laboratory, Berkeley, USA

Received Date: 1989-05-29

Fund Project: Supported by the National Natural Science Foundation of China.

Abstract: The velocities and angular distributions of correlated fission fragments emitted from reaction of ¹⁹⁷Au bombarded by a ²⁸Si beam with energies from 5.5 to 21.7 MeV/A are measured. The results show that when the incident energy is larger than 10 MeV/A, the incomplete fusion-fission (ICF) associated with incomplete linear momentum transfer (LMT) appears. Furthermore, when E_cm > 200 MeV, as a companion of ICF, the sequential fission (SF) with lower LMT than that of ICF, has apparent yields. By comparing the difference of LMT values from ICF and SF, the ratio of SF over total fission cross-section has been obtained. Moreover, the angular distribution off the reaction plane of one fragment and its standard deviation have been obtained. It seems that there is a general linear relationship between the deviation and excitation energy per nucleon in heavier composite systems.

Fission Measurement on 5.5 to 22 MeV/A ²⁸Si + ¹⁹⁷Au Systems (I) Linear Momentum Transfer and Angular Distribution off Reaction Plane

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Fission Measurement on 5.5 to 22 MeV/A ²⁸Si + ¹⁹⁷Au Systems (I) Linear Momentum Transfer and Angular Distribution off Reaction Plane

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Fission Measurement on 5.5 to 22 MeV/A 28Si + 197Au Systems (I) Linear Momentum Transfer and Angular Distribution off Reaction Plane

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Fission Measurement on 5.5 to 22 MeV/A 28Si + 197Au Systems (I) Linear Momentum Transfer and Angular Distribution off Reaction Plane

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Fission Measurement on 5.5 to 22 MeV/A ²⁸Si + ¹⁹⁷Au Systems (I) Linear Momentum Transfer and Angular Distribution off Reaction Plane

Fission Measurement on 5.5 to 22 MeV/A ²⁸Si + ¹⁹⁷Au Systems (I) Linear Momentum Transfer and Angular Distribution off Reaction Plane