Emission Time of Light Particles and Lifetime of Hot Nuclei Followed by Binary Fission

He Zhiyong; Jin Genming; Li Zuyu; Duan Limin; Wu Heyu; Dai Guangxi; Zhang Baoguo; Wen Wanxin; Qi Yujin; Luo Qingzheng

Chinese Physics C> 1996, Vol. 20> Issue(7) : 596-600

Emission Time of Light Particles and Lifetime of Hot Nuclei Followed by Binary Fission

Institute of Moden Physics, The Chinese Academy of Sciences, Lanzhou 730000

Abstract
HTML
Reference
Related

PDF

Abstract：
Particle-particle correlation function and emission time of light particles detected in coincidence with fission fragments have been measured for the ⁴⁰Ar+¹⁹⁷Au collisions at E/A=25MeV. A mean emission time of 200-300fm/c suggests that the prescission emission of light particles dominates. The emission time changes slightly for particles of in-plane emission and out-of-plane emission, but varies dramatically with the energy of particles. It decreases from about 300fm/c for mid-rapidity particles to about 30-100fm/c for projectile-like particles.

References

[1]

E.Bauge et al,Phys Rev.Lett.,70（1993）3705.[2]M.Louvel et al.,Phys.Lett.,B320（1994）221.[3]吴和宇等，高能物理与核物理，19（1995）589.[4]贺智勇等，高能物理与核物理，20（1996）394.[5]贺智勇等，Chineses Physics Letter,12（1995）521.[6]贺智勇等，高能物理与核物理，20（1996）8.[7]A.Elmaani et al,Nucl Instand Meth,A313（1992）401.[8]D.Hilscher et al,Phys.Rev.Lett,62（1989）1099.[9]TNakagawa et al.,Nucl Phys.,A583（1995）149C.

[1]	YE Wei . Particle Evaporation in the Fission Process of Nuclei ^100,104Sn. Chinese Physics C, 2006, 30(3): 217-219.
[2]	. . Chinese Physics C, 2004, 28(3): 4-4–10.
[3]	YE Wei . Effects of Isospin on Multiplicity of Prescission Particles of Light Fissioning Systems. Chinese Physics C, 2004, 28(1): 73-77.
[4]	ZHANG Gao-Long , YE Yan-Lin , JIANG Dong-Xing , ZHENG Tao , WANG Quan-Jin , LI Zhi-Huan , LI Xiang-Qing , CHEN Zhi-Qiang , HU Qing-Yuan , PANG Dan-Yang , WANG Jia . Observation of Light Particle Emission at Backward Angles in the Reaction Induced by 25MeV/u⁶He from⁹Be Target. Chinese Physics C, 2004, 28(5): 451-454.
[5]	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.
[6]	LV Cai-Dian . Toward a Theory of Non-leptonic Two-Body B Decays in QCD. Chinese Physics C, 2002, 26(S1): 20-24.
[7]	WANG Meng , WANG Jian-Song , GUO Zhong-Yan , XIAO Guo-Qing , ZHAN Wen-Long , LI Jia-Xing , SUN Zhi-Yu , CHEN Zhi-Qiang , WANG Wu-Sheng , TIAN Wen-Dong , MAO Rui-Shi . Isospin Effects on the Yield of LCPs in the Reaction of RNB. Chinese Physics C, 2002, 26(8): 803-808.
[8]	LIU Yong-Ying , WANG Su-Fang , DUAN Li-Min , JIN Gen-Ming , ZHU Hai-Dong , ZHANG Bao-Guo , WEN Wan-Xin , LI Zu-Yu , HE Zhi-Yong , WANG Hong-Wei , XIAO Zhi-Gang , WU He-Yu , WEI Zhi-Yong . Emission Time of Light Particles with Respect to Measurement Angle. Chinese Physics C, 2001, 25(11): 1065-1070.
[9]	LIU Bo , PENG GuangXiong , SHEN PengNian , HE ZeJun , CHEN Hong , MA WeiXing , ZHAO EnGuang , LU HongChao . Leptonic Decay and Radiative Transion of ψ′in Medium at Finite Temperature and Density. Chinese Physics C, 2000, 24(10): 969-973.
[10]	WEI ZhiYong , LI ZuYu , LIU YongYing , DUAN LiMin , WU HeYu , ZHANG BaoGuo , WANG HongWei , WANG SuFang , XIAO ZhiGang , LU ZhaoHui , JIN GenMing , ZHU YongTai , HU RongJiang , ZHU HaiDong . Statistical Emission of Hot Nuclei in the 35MeV/u ⁴⁰Ar+¹⁹⁷Au Nuclear Reaction. Chinese Physics C, 2000, 24(12): 1131-1136.
[11]	Wu Heyu , Xiao Zhigang , Li Zuyu , Wang Hpmgweo , Duan Limin , Zhang Baoguo , Liu Yongying , Wang Sufang , Jin Genming , Xiao Guoqing , Guo Zhongyan , Zhu Yongtai . Isospin Effect on the Emission Mechanism of Hot Nuclei in 35MeV/u ⁴⁰Ar +¹¹²Sn/¹²⁴Sn Reactions. Chinese Physics C, 1999, 23(11): 1115-1118.
[12]	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 Particles From ⁴⁰Ar+¹⁹⁷Au Collisions at 25MeV/u. Chinese Physics C, 1996, 20(5): 394-399.
[13]	He Zhiyong , Duan Limin , Li Zuyu , Jin Genming , Luo Qingzheng , Wu Heyu , Zhang Baoguo , Wen Wanxin , Qi Yujin , Dang Bingrong , Dai Guangxi . Emission Time Measurements of Light Particles from ⁴⁰Ar+¹⁹⁷Au Collisions in Intermediate Energies. Chinese Physics C, 1996, 20(1): 8-12.
[14]	WANG Bing , ZENG Yao-Wu , SHEN Wen-Qing , ZHAN Wen-Long , ZHOU Jian-Qun , FENG En-Pu , ZHU Yong-Tai , Feng Jun . A LIGHT-PARTICLE MULTIDETECTOR FOR INTERMEDIATE ENERGY HEAVY-ION REACTION. Chinese Physics C, 1990, 14(12): 1121-1125.
[15]	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.
[16]	MIAO Rong-Zhi . A MEMORY PARTICLE MODEL IN STUDY OF PRE-EQUILIBRIUM EMISSION. Chinese Physics C, 1989, 13(10): 942-955.
[17]	WU Guo-Hua , GE Ling-Xiao . EMISSION OF LIGHT PARTICLES IN HEAVY ION COLLISIONS. Chinese Physics C, 1988, 12(4): 541-547.
[18]	CAI Xu , ZHOU Zhuo-Wei . TWO TEMPERATURES EMISSION OF RELATIVISTIC α-PARTICLES IN HIGH-ENERGY HEAVY-ION COLLISIONS. Chinese Physics C, 1987, 11(1): 51-56.
[19]	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.
[20]	DAI Guang-Xi , JIN Gen-Ming , YUAN Shuang-Gui , GUO Zhong-Yan , ZENG Wen-Bing , CHEN Ju-Sheng , LI Zu-Yu , WANG Da-Yan , XU Guo-Jun . THE MEASUREMENT OF LIGHT PARTICLE EMISSION FROM ¹²C+¹⁵⁹Tb, Ag AND ⁸⁹Y REACTIONS. Chinese Physics C, 1983, 7(1): 86-94.

Access

Get Citation

He Zhiyong, Jin Genming, Li Zuyu, Duan Limin, Wu Heyu, Dai Guangxi, Zhang Baoguo, Wen Wanxin, Qi Yujin and Luo Qingzheng. Emission Time of Light Particles and Lifetime of Hot Nuclei Followed by Binary Fission[J]. Chinese Physics C, 1996, 20(7): 596-600.

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

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

Article Metric

Article Views(2668)
PDF Downloads(510)
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

Emission Time of Light Particles and Lifetime of Hot Nuclei Followed by Binary Fission

Corresponding author: He Zhiyong,

Institute of Moden Physics, The Chinese Academy of Sciences, Lanzhou 730000

Received Date: 1900-01-01

Accepted Date: 1900-01-01

Available Online: 1996-07-05

Abstract: Particle-particle correlation function and emission time of light particles detected in coincidence with fission fragments have been measured for the ⁴⁰Ar+¹⁹⁷Au collisions at E/A=25MeV. A mean emission time of 200-300fm/c suggests that the prescission emission of light particles dominates. The emission time changes slightly for particles of in-plane emission and out-of-plane emission, but varies dramatically with the energy of particles. It decreases from about 300fm/c for mid-rapidity particles to about 30-100fm/c for projectile-like particles.

HTML

Reference (1)

Emission Time of Light Particles and Lifetime of Hot Nuclei Followed by Binary Fission

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article