Preequilibrium Fission

Liu Zuhua; Zhang Huanqiao; Xu Jincheng; Qian Xing; Qiao Yu; Lin Chengjian

Chinese Physics C> 1996, Vol. 20> Issue(2) : 107-112

Preequilibrium Fission

China Institute of Atomic Energy,Beijing 102413

Abstract
HTML
Reference
Related

PDF

Abstract：
It is verified experimentally that the heavy-ion-induced fusionfission reactions are entrance-channel mass asymmetry dependent.This dependence means that in some cases,the fused composite systems havenot forgot the history of it's formation.Based on the experimental observations,we have put forward a preequilibrium fission model.In framework of this model,we have successfully explained the anomalous fragment anisotropies from fusion-fission at near-andsub-barrier energies.

References

[1]

A.Bohr,“On the Theory of Nuclear Fission”,Proc. Int. Con. on Peaceful Uses of Atomic Energy, New York, 2（1956）151.[2]I.Halpern,V.M.Struntisky,“Angular distributions in particle induced fission at medium energies”,Proc. Int. Con. Peaceful Uses of Atomic Energy, New York, 15（1958）408.[3]L.C.Vaz,J.M.Alexander,Phys.Rap.,97（1983）1.[4]B.B.Back,Phys.Rev.,C31（1985）2104.[5]C.Gregoire,C.Ngo,V.Remand,Phys.Lett,B99（1985）17.[6]W.J.Swiaticki,Phys.Scr.,24（1981）113.[7]R.Vandenbosch,T.Murakami,C.-C.Shahm et al.,Phys.Rev.Lett.,56（1986）1234.[8]H.Q.Zhang,J.C.Xu,Z.H.Liu et al,Phys.Lett.,B218（1989）133.[9]C.H.Dasso,S.Landowne,A.Winther,Nucl.Phys.,A405（1983）381;A407（1983）221.[10]C.Y.Wong,Phys.Rev.Lett.,31（1973）766.[11]D.E.DiGregorio,R.G.Stokstad,Phys.Rev.,C43（1991）265.[12]R.Vandenbosch,Ann.Rev.Nucl.Part.Sci.,42（1992）447.[13]Z.H.Liu,H.Q.Zhang,J.C.Xu et al.,Phys.Rev.,C50（1994）1717.[14]V.S.Ramamurthy,S.S.Kapoor,inProc.Int.Con.on Nuclear Physics,Harrogate,United Kingdom,1986.[15]H.Q.Zhang,Z.H.Liu,J.C.Xu et al.,Phys.Rev.,C49（1994）926.[16]R.F.Reising,G.L.Bate. J. R. Huizenga, Phys. Rev., 141(1966) 1161.[17]B. B. Back, R. R. Betts, P. Fernandez et al., "Fission at Sub-barrier Energies", Proceedings of Sixth Winter Workshop on Nuclear Dynamics (Jackson Hole, Wyoming, 1990).[18]B. B. Back, S. Bjrnholm, T. Dssing et al., Phys. Rev., C41(1990)1495.[19]A. J. Sierk. Phys. Rev., C33(1986)2039.[20]H. Rossner, D. J. Hinde, J. R. Leigh et al., Phys. Rev., C45(1992)719.[21]A. Saxena, S. Kailas, A. Karnik, et al., Phys. Rev., C47(1993)403.[22]T. Dssing, J. Randrup. Nucl. Phys., A433(1985)215.[23]Z. H. Liu, H. Q. Zhang, C. J. Xu et al., Phys. Lett., B353(1995)173.

[1]	CHEN Jin-Hui , HAN Qian , KANG Wen . Balun Technology for Bipolar Pulsed Power Supply. Chinese Physics C, 2006, 30(9): 896-901.
[2]	ZHOU Chun-Mei , WU Zhen-Dong , HUANG Xiao-Long . Calculations of Energy and Intensity Balances in ε Decay. Chinese Physics C, 2004, 28(11): 1154-1159.
[3]	PEI Shi-Lun , WANG Shu-Hong , GU Peng-Da , LIU Bo . Optimization Studies on BEPCⅡ Future Pre-injector with Two SHBs. Chinese Physics C, 2004, 28(5): 549-554.
[4]	SU Zong-Di , LI Bao-Xian , CAO Tian-Guang , WANG Shu-Nuan , ZHANG Ben-Ai , LIU Jian-Feng , HUANG Zhong-Fu , ZHU Yao-Yin , LI Zhi-Wen , . A Unified Expression for Multistep Compound Theory of Pre-equilibrium Reaction and Compound Nucleus Reaction Theory. Chinese Physics C, 2003, 27(6): 498-502.
[5]	LIU Chang-Long . Effects of Ion Irradiation on the Diffusion of Pre-implanted B Atoms in Crystalline Silicon. Chinese Physics C, 2001, 25(12): 1238-1244.
[6]	Chen Liewen , Zhang Fengshou , Jin Genming . Isospin Effects on Balance Energy in HIC at Intermediate Energies. Chinese Physics C, 1999, 23(5): 469-474.
[7]	Huang Wenhui , Wang Guangwei , Lin Yuzheng , Zhou Feng . Effect of Narrow-Band Impedance on Longitudinal Static Distribution. Chinese Physics C, 1999, 23(7): 709-716.
[8]	Chen Liewen , Zhang Xiaodong , Ge Lingxiao . Isospin Effects on Pre-equilibrium NucleonEmission in Heavy Ion Collisions. Chinese Physics C, 1996, 20(12): 1091-1096.
[9]	Zhong Jiquan , Wen Wanxin , Jin Genming , Di Tori . Pre-equilibrium GDR Built on Dinucleus. Chinese Physics C, 1995, 19(12): 1114-1118.
[10]	GE Ling-Xiao , LIU Jian-Ye , WANG Shun-Jin . RELAXATION OF SINGLE PARTICLE DEGREES OF FREEDOM IN HEAVY ION COLLISION. Chinese Physics C, 1989, 13(3): 245-251.
[11]	MIAO Rong-Zhi . A STUDY OF PRE-EQUILIBRIUM EMISSION INVOLVING COMPLEX PROJECTILE AND EMITTED PARTICLE IN MEMORY MODEL. Chinese Physics C, 1989, 13(11): 1039-1048.
[12]	MIAO Rong-Zhi . A MEMORY PARTICLE MODEL IN STUDY OF PRE-EQUILIBRIUM EMISSION. Chinese Physics C, 1989, 13(10): 942-955.
[13]	DAI Guang-Xi , LI Wei-Sheng . EXPLORATION OF OPTIMUM SHAPE IN SYMMETRY FISSION. Chinese Physics C, 1988, 12(5): 669-672.
[14]	MIAO Rong-Zhi , WU Guo-Hua . A STUDY OF COMPLEX PARTICLE EMISSION IN THE PRE-EQUILIBRIUM STATISTICAL MODEL. Chinese Physics C, 1986, 10(1): 82-91.
[15]	DAI Guang-Xi , WANG Zheng-Da . THE SHAPE OF FISSION SCISSION POINT. Chinese Physics C, 1985, 9(5): 622-624.
[16]	TANG Xue-Tian , LU Zhong-Dao , WANG Shu-Nuan . STATISICAL THEORIES OF PREEQUILIBRIUM NUCLEAR REACTIONS AND THE HAUSER-FESHBACH FORMULA. Chinese Physics C, 1985, 9(3): 349-355.
[17]	PAN Ji-Zhi , JIANG Huan-Qing . "ONE, TWO, INFINITY" MODEL FOR PRECOMPOUND REACTION AND NUCLEAR SIZE EFFECT. Chinese Physics C, 1984, 8(1): 99-104.
[18]	XU Shu-Wei , WU Guo-Hua , MIAO Rong-Zhi , HAN Fei . TRY TO EXTRACT THE PREFORMATION PROBABILITY OF α-CLUSTER AT THE SURFACE OF HEAVY NUCLEI BY MEANS OF α-TRANSFER REACTIONS LEADING TO THE CONTINUUM STATES. Chinese Physics C, 1983, 7(1): 95-100.
[19]	WANG CHENG-SHING . NON-EQUILIBRIUM STATISTICAL THEORY OF NUCLEAR FISSION MASS DISTRIBUTION. Chinese Physics C, 1982, 6(2): 219-230.
[20]	Ye Si-zong , Zhu Yu-cheng , Liu Gui-lin , Shao Bei-bei , Xiao Ting-han , . ASSESSMENT OF THE RADIOLOGICAL IMPACT OF THE 50 GeV BPS¹⁾ ON ITS ENVIRONMENT. Chinese Physics C, 1980, 4(6): 694-705.

Access

Get Citation

Liu Zuhua, Zhang Huanqiao, Xu Jincheng, Qian Xing, Qiao Yu and Lin Chengjian. Preequilibrium Fission[J]. Chinese Physics C, 1996, 20(2): 107-112.

Liu Zuhua, Zhang Huanqiao, Xu Jincheng, Qian Xing, Qiao Yu and Lin Chengjian. Preequilibrium Fission[J]. Chinese Physics C, 1996, 20(2): 107-112. shu

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 1900-01-01
Revised: 1900-01-01

Article Metric

Article Views(3155)
PDF Downloads(527)
Cited by(0)

Policy on re-use

To reuse of subscription content published by CPC, the users need to request permission from CPC, unless the content was published under an Open Access license which automatically permits that type of reuse.

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Preequilibrium Fission

Corresponding author: Liu Zuhua,

China Institute of Atomic Energy,Beijing 102413

Received Date: 1900-01-01

Accepted Date: 1900-01-01

Available Online: 1996-02-05

Abstract: It is verified experimentally that the heavy-ion-induced fusionfission reactions are entrance-channel mass asymmetry dependent.This dependence means that in some cases,the fused composite systems havenot forgot the history of it's formation.Based on the experimental observations,we have put forward a preequilibrium fission model.In framework of this model,we have successfully explained the anomalous fragment anisotropies from fusion-fission at near-andsub-barrier energies.

HTML

Reference (1)

Preequilibrium Fission

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article