System size effects on probing nuclear dissipation with neutrons

WU Feng; YE Wei

doi:10.1088/1674-1137/34/5/007

Chinese Physics C> 2010, Vol. 34> Issue(5) : 551-554 DOI: 10.1088/1674-1137/34/5/007

System size effects on probing nuclear dissipation with neutrons

WU Feng ,
YE Wei ^,

Abstract
HTML
Reference
Related

PDF

Abstract：
Using a dynamical Langevin equation coupled with a statistical decay model, we calculate the excess of the pre-scission neutron multiplicities over its standard statistical-model values as a function of the nuclear dissipation strength for the three nuclei ¹⁹⁰Os, ²⁰⁰Hg, and ²¹⁰Po which have the same neutron-to-proton ratio N/Z. We find that by decreasing the size of the fissioning nuclei, the effects of nuclear dissipation on the excess of the pre-scission neutron multiplicity are substantially amplified, and that the sensitivity of this excess to the nuclear friction strength is considerably increased as well. We suggest that for those fissioning systems with the same N/Z that are populated in fusion reactions, to obtain a more accurate information of the nuclear dissipation strength by measuring the pre-scission neutron multiplicity, it is best to choose a system with a small size.

References

[1]

. Peterson D et al. Phys. Rev. C., 2009, 79: 0446072. Jacquet D, Morjean M. Prog. Part. Nucl. Phys., 2009, 63:1553. Sadhukhan J et al. Phys. Rev. C, 2008, 78: 011603(R)4. YE W, YANG H W, WU F. Chin. Phys. C (HEP NP),2008, 32: 8165. Frobrich P. Nucl. Phys. A, 2007, 787: 170c6. Andersen U J et al. Phys. Rev. Lett., 2007, 99: 1625027. Schmitt C et al. Phys. Rev. Lett., 2007, 99: 0427018. YE W. Phys. Lett. B, 2007, 647: 1189. Frobrich P, Gontchar I I. Phys. Rep., 1998, 292: 13110. Abe Y et al. Phys. Rep., 1996, 275: 4911. YE W et al. Z. Phys. A, 1997, 359: 38512. Nadtochy P N et al. Phys. Rev. C, 2002, 65: 06461513. Ryabov E G et al. Phys. Rev. C, 2008, 78: 04461414. Frobrich P. Prog. Theor. Phys. Suppl., 2004, 154: 27915. Jurado B et al. Phys. Rev. Lett., 2004, 93: 08250116. Shidling P D et al. Phys. Rev. C, 2006, 74: 06460317. YE W. Phys. Rev. C, 2008, 77: 011302(R)18. Hilscher D, Rossner H. Ann. Phys. (Paris), 1992, 17: 47119. Ramachandran K et al. Phys. Rev. C, 2006, 73: 06460920. Singh H et al. Phys. Rev. C, 2008, 78: 024609; 2006, 76:04461021. Tishchenko V et al. Phys. Rev. Lett., 2005, 95: 16270122. Myers W D, Swiatecki W J. Nucl. Phys., 1961, 81: 123. Myers W D, Swiatecki W J. Ark. Fys., 1967, 36: 34324. Balian R, Bloch C. Ann. Phys., 1970, 60: 40125. Brack M et al. Rev. Mod. Phys., 1973, 44: 32026. Gontchar I I, Frbrich P, Pischasov N I. Phys. Rev. C,1993, 47: 222827. Ignatyuk A V et al. Sov. J. Nucl. Phys., 1975, 21: 61228. Frobrich P et al. Nucl. Phys. A, 1993, 556: 28129. Blann M. Phys. Rev. C, 1980, 21: 177030. Lazarev Y A, Gontchar I I, Mavlitov N D. Phys. Rev.Lett., 1993, 70: 1220

[1]	Xue Pan , Li-Zhu Chen , Yuan-Fang Wu . Behavior and finite-size effects of the sixth order cumulant in the three-dimensional Ising universality class. Chinese Physics C, 2016, 40(9): 093104. doi: 10.1088/1674-1137/40/9/093104
[2]	Kai Tang , Bao-Gen Sun , Yong-Liang Yang , Ping Lu , Lei-Lei Tang , Fang-Fang Wu , Chao-Cai Cheng , Jia-Jun Zheng , Hao Li . Transverse beam size measurement system using visible synchrotron radiation at HLS Ⅱ. Chinese Physics C, 2016, 40(9): 097002. doi: 10.1088/1674-1137/40/9/097002
[3]	Jian Tian , Wei Ye . Effect of pre-equilibrium emission on probing postsaddle nuclear dissipation with neutrons. Chinese Physics C, 2016, 40(9): 094103. doi: 10.1088/1674-1137/40/9/094103
[4]	LIU Zhi-Feng . A modified explanation of cold nuclear matter effects on J/ψ production in p+A collisions. Chinese Physics C, 2015, 39(8): 084104. doi: 10.1088/1674-1137/39/8/084104
[5]	YANG Min , WANG Xiao-Long , LIU Yi-Peng , MENG Fan-Yong , LI Xing-Dong , LIU Wen-Li , WEI Dong-Bo . Automatic calibration method of voxel size for cone-beam 3D-CT scanning system. Chinese Physics C, 2014, 38(4): 046202. doi: 10.1088/1674-1137/38/4/046202
[6]	B. M. Badawy . System size dependence in backward relativistic hadron production in pA and AA collisions. Chinese Physics C, 2014, 38(11): 114001. doi: 10.1088/1674-1137/38/11/114001
[7]	CHEN Ya-Zheng , CHEN Jun-Mou , LUO Yan-An , SHEN Hong , LI Xue-Qian . Effects of nuclear deformation on the form factorfor direct dark matter detection. Chinese Physics C, 2012, 36(6): 505-512 . doi: 10.1088/1674-1137/36/6/005
[8]	YANG Jun , LUO Xiao-Liang , LIU Guo-Fu , LIN Cun-Bao , WANG Yan-Ling , HU Qing-Qing , PENG Jin-Xian . Digital discrimination of neutrons and γ rays with organic scintillation detectors in an 8-bit sampling system using frequency gradient analysis. Chinese Physics C, 2012, 36(6): 544-551 . doi: 10.1088/1674-1137/36/6/011
[9]	ZHOU Shu-Hua . Environmental al effects on nuclear decay rates. Chinese Physics C, 2011, 35(5): 449-452. doi: 10.1088/1674-1137/35/5/008
[10]	WANG Yang-Yang , ZHAO Lin-Jie , YUAN Zhong-Sheng , ZHANG Dan-Dan , FANG Wei , XU Ming-Mei . System size in relativistic heavy ion collisions. Chinese Physics C, 2011, 35(3): 264-268. doi: 10.1088/1674-1137/35/3/010
[11]	LI Jing-Wu , WU Xiang-Yao . Probing new physics in B→J/ψ π⁰ decay. Chinese Physics C, 2010, 34(11): 1680-1686. doi: 10.1088/1674-1137/34/11/002
[12]	WANG Nan , ZHOU Shan-Gui , ZHAO En-Guang . Influence of octupole deformation and orientation on the potential energy surface in the di-nuclear system model. Chinese Physics C, 2010, 34(10): 1615-1621. doi: 10.1088/1674-1137/34/10/012
[13]	Abdolmajid Izadpanah . Causality principle and nuclear dispersion anomaly in the elastic scattering for α+¹²C system. Chinese Physics C, 2010, 34(12): 1842-1845.
[14]	YE Wei . Surveying post-saddle nuclear dissipation with protons and α particles as probes. Chinese Physics C, 2010, 34(1): 45-48. doi: 10.1088/1674-1137/34/1/008
[15]	WANG Yan-Zhao , ZHANG Hong-Fei , GAO Yong-Hua , HOU Zhao-Yu , DONG Jian-Min , DUAN Chun-Gui , ZUO Wei . Quark distributions in nuclei and nuclear effects on nucleon structure functions. Chinese Physics C, 2009, 33(4): 263-268. doi: 10.1088/1674-1137/33/4/005
[16]	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
[17]	YE Wei . Surveying the role of excitation energy in probing nuclear dissipation. Chinese Physics C, 2009, 33(7): 528-531. doi: 10.1088/1674-1137/33/7/005
[18]	WANG Hong-Min , HOU Zhao-Yu , SUN Xian-Jing . Cold nuclear matter effects on J/ψ production in d-Au collisions. Chinese Physics C, 2008, 32(11): 892-896. doi: 10.1088/1674-1137/32/11/009
[19]	YE Wei , WU Feng . Influence of angular momentum on evaporation residue cross section as a probe of nuclear dissipation. Chinese Physics C, 2008, 32(6): 433-436. doi: 10.1088/1674-1137/32/6/004
[20]	Li Zhuxia , Shi Yijing , Wu Xizhen , Wang Zhongqi , Zhuo Yizhong . Quantum Effect and One-Body Dissipation. Chinese Physics C, 1990, 14(S3): 291-299.

Access

Get Citation

WU Feng and YE Wei. System size effects on probing nuclear dissipation with neutrons[J]. Chinese Physics C, 2010, 34(5): 551-554. doi: 10.1088/1674-1137/34/5/007

WU Feng and YE Wei. System size effects on probing nuclear dissipation with neutrons[J]. Chinese Physics C, 2010, 34(5): 551-554. doi: 10.1088/1674-1137/34/5/007 shu

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2009-07-20
Revised: 2009-10-24

Article Metric

Article Views(2640)
PDF Downloads(482)
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

System size effects on probing nuclear dissipation with neutrons

Corresponding author: YE Wei,

Received Date: 2009-07-20

Accepted Date: 2009-10-24

Available Online: 2010-05-05

Abstract:

Using a dynamical Langevin equation coupled with a statistical decay model, we calculate the excess of the pre-scission neutron multiplicities over its standard statistical-model values as a function of the nuclear dissipation strength for the three nuclei ¹⁹⁰Os, ²⁰⁰Hg, and ²¹⁰Po which have the same neutron-to-proton ratio N/Z. We find that by decreasing the size of the fissioning nuclei, the effects of nuclear dissipation on the excess of the pre-scission neutron multiplicity are substantially amplified, and that the sensitivity of this excess to the nuclear friction strength is considerably increased as well. We suggest that for those fissioning systems with the same N/Z that are populated in fusion reactions, to obtain a more accurate information of the nuclear dissipation strength by measuring the pre-scission neutron multiplicity, it is best to choose a system with a small size.

HTML

Reference (1)

System size effects on probing nuclear dissipation with neutrons

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article