Surveying post-saddle nuclear dissipation with protons and α particles as probes

YE Wei

doi:10.1088/1674-1137/34/1/008

Chinese Physics C> 2010, Vol. 34> Issue(1) : 45-48 DOI: 10.1088/1674-1137/34/1/008

Surveying post-saddle nuclear dissipation with protons and α particles as probes

YE Wei ^,

Department of Physics, Southeast University, Nanjing 210096, China

Abstract
HTML
Reference
Related

PDF

Abstract：
Using a Langevin model, we calculate post-saddle proton and α-particle multiplicities as a function of the post-saddle dissipation strength (β) for the heavy systems ²³⁴Cf, ²⁴⁰Cf, ²⁴⁶Cf and ²⁴⁰U. We find that, with increasing isospin of the system, the sensitivity of post-saddle light charged-particle multiplicities to β decreases considerably and, moreover, for ²⁴⁰U the charged-particle multiplicities are no longer sensitive to β. These results suggest that in order to determine the post-saddle friction strength more accurately by measuring the multiplicities of pre-scission protons and α particles, it is best to populate those heavy compound systems with low isospin.

References

[1]

Sadhukhan J, Pal S. Phys. Rev. C, 2008, 78: 011603(R)2 Andersen J U et al. Phys. Rev. C, 2008, 78: 0646093 Mirfathi S M, Pahlavani M R. Phys. Rev. C, 2008, 78: 0646124 Schmitt C et al. Phys. Rev. Lett., 2007, 99: 0427015 Tishchenko V et al. Phys. Rev. Lett., 2005, 95: 1627016 Jurado B et al. Phys. Rev. Lett., 2004, 93: 0825017 Frobrich P, Gontchar I I. Phys. Rep., 1998, 292: 1318 Shidling P D et al. Phys. Rev. C, 2006, 74: 0646039 YE W. Phys. Rev. C, 2008, 77: 011302(R) 10 YE W. Phys. Rev. C, 2007, 76: 041601(R)11 Frobrich P, Gontchar I I. Nucl. Phys. A, 1993, 563: 32612 Hilscher D, Rossner H. Ann. Phys. (Paris), 1992, 17: 47113 Hinde D J et al. Phys. Rev. C, 1992, 45: 122914 Thoennessen M, Bertsch G F. Phys. Rev. Lett., 1993, 71: 430315 Lestone J P. Phys. Rev. Lett., 1993, 70: 224516 Chatterjee A et al. Phys. Rev. C, 1995, 52: 316717 Cabrera J et al. Phys. Rev. C, 2003, 68: 03461318 Ramachandran K et al., Phys. Rev. C, 2006, 73: 06460919 Ignatyuk A V et al. Sov. J. Nucl. Phys., 1975, 21: 61220 Myers W D, Swiatecki W J. Nucl. Phys., 1961, 81:121 Myers W D, Swiatecki W J. Ark. Fys., 1967, 36: 34322 Blann M. Phys. Rev. C, 1980, 21: 177023 Lynn J E. Theory of Neutron Resonance Reactions. Clarendon, Oxford, 196924 Hass R W, Myers W D. Geometrical Relationships of Macroscopic Nuclear Physics. Springer, 1988

[1]	Rebecca Krall , Matthew Reece . Last electroweak WIMP standing: pseudo-Dirac higgsino status and compact stars as future probes. Chinese Physics C, 2018, 42(4): 043105. doi: 10.1088/1674-1137/42/4/043105
[2]	Hai-Nan Lin , Xin Li , Yu Sang . Local probes strongly favor ∧CDM against power-law and R_h=ct universe. Chinese Physics C, 2018, 42(9): 095101. doi: 10.1088/1674-1137/42/9/095101
[3]	Yu. A. Berezhnoy , V. P. Mikhailyuk . Polarization of protons in the optical model. Chinese Physics C, 2017, 41(2): 024102. doi: 10.1088/1674-1137/41/2/024102
[4]	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
[5]	TIAN Jian , WANG Ning , YE Wei . Langevin analysis of fission excitation functions induced by protons. Chinese Physics C, 2015, 39(3): 034102. doi: 10.1088/1674-1137/39/3/034102
[6]	LI Hui-Cai , CHEN Ming-Jun , JIA Huan-Yu , GAO Bo , YAO Zhi-Guo , YUO Xiao-Hao , ZHOU Bin , ZHU Feng-Rong , . Study on the optimization of the water Cherenkov detector array of the LHAASO project for surveying VHE gamma ray sources. Chinese Physics C, 2014, 38(1): 016002. doi: 10.1088/1674-1137/38/1/016002
[7]	JIA Xiao-Yu , ZHENG Shu-Xin . Analyzing the effects of post couplers in DTL tuning by the equivalent circuit model. Chinese Physics C, 2013, 37(12): 127005. doi: 10.1088/1674-1137/37/12/127005
[8]	WU Yang , TANG Jing-Yu . Post-acceleration study for neutrino super-beam at CSNS. Chinese Physics C, 2013, 37(9): 097002. doi: 10.1088/1674-1137/37/9/097002
[9]	S. M. Ikhdair , A. A. Rajabi . A semi-relativistic treatment of spinless particles subjectto the nuclear Woods-Saxon potential. Chinese Physics C, 2013, 37(6): 063101. doi: 10.1088/1674-1137/37/6/063101
[10]	SHEN Cheng-Ping (for the Belle collaboration) . XYZ particles at Belle. Chinese Physics C, 2010, 34(6): 615-620. doi: 10.1088/1674-1137/34/6/001
[11]	WU Feng , YE Wei . System size effects on probing nuclear dissipation with neutrons. Chinese Physics C, 2010, 34(5): 551-554. doi: 10.1088/1674-1137/34/5/007
[12]	XING Yong-Zhong . Analytical solution of a multidimensional Langevin equation at high friction limits and probability passing over a two-dimensional saddle. Chinese Physics C, 2009, 33(4): 269-273. doi: 10.1088/1674-1137/33/4/006
[13]	HE Jun . η-production on the proton via electromagnetic and hadronic probes. Chinese Physics C, 2009, 33(12): 1175-1182. doi: 10.1088/1674-1137/33/12/020
[14]	SUN Zhu . Unified description of angular distributions of target particles in light and heavy ion induced interactions in nuclear emulsions at high energies. Chinese Physics C, 2009, 33(4): 256-262. doi: 10.1088/1674-1137/33/4/004
[15]	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
[16]	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
[17]	Zhang Fengshou , E. Suraud , J. L. Laville . Energetic Protons and Cold Nuclear Multifragmentation Pattern. Chinese Physics C, 1997, 21(S3): 43-50.
[18]	Zhang Weining , Liu Yiming , Huo Lei , Jiang Yuzhen , D. Keane , S. Y. Fung . Multiparticle Bose Correlations: Probes for the Granular Source of Quark-Gluon-Plasma Droplets. Chinese Physics C, 1995, 19(S1): 77-85.
[19]	Li Zhuxia , Shi Yijing , Wu Xizhen , Wang Zhongqi , Zhuo Yizhong . Quantum Effect and One-Body Dissipation. Chinese Physics C, 1990, 14(S3): 291-299.
[20]	Chen Xinyi , Hu Jimin . Calculation of the Effective Moment of Inertia of Fissioning Nuclei at the Saddle Point. Chinese Physics C, 1989, 13(S2): 207-212.

Access

Get Citation

YE Wei. Surveying post-saddle nuclear dissipation with protons and α particles as probes[J]. Chinese Physics C, 2010, 34(1): 45-48. doi: 10.1088/1674-1137/34/1/008

YE Wei. Surveying post-saddle nuclear dissipation with protons and α particles as probes[J]. Chinese Physics C, 2010, 34(1): 45-48. doi: 10.1088/1674-1137/34/1/008 shu

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2009-02-16
Revised: 2009-04-01

Article Metric

Article Views(2715)
PDF Downloads(591)
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

Surveying post-saddle nuclear dissipation with protons and α particles as probes

Corresponding author: YE Wei,

Department of Physics, Southeast University, Nanjing 210096, China

Received Date: 2009-02-16

Accepted Date: 2009-04-01

Available Online: 2010-01-05

Abstract:

Using a Langevin model, we calculate post-saddle proton and α-particle multiplicities as a function of the post-saddle dissipation strength (β) for the heavy systems ²³⁴Cf, ²⁴⁰Cf, ²⁴⁶Cf and ²⁴⁰U. We find that, with increasing isospin of the system, the sensitivity of post-saddle light charged-particle multiplicities to β decreases considerably and, moreover, for ²⁴⁰U the charged-particle multiplicities are no longer sensitive to β. These results suggest that in order to determine the post-saddle friction strength more accurately by measuring the multiplicities of pre-scission protons and α particles, it is best to populate those heavy compound systems with low isospin.

HTML

Reference (1)

Surveying post-saddle nuclear dissipation with protons and α particles as probes

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article