Isospin dependence of nuclear multifragmentation in statistical model

ZHANG Lei; XIE Dong-Zhu; ZHANG Yan-Ping; GAO Yuan

doi:10.1088/1674-1137/35/6/011

Chinese Physics C> 2011, Vol. 35> Issue(6) : 567-571 DOI: 10.1088/1674-1137/35/6/011

Isospin dependence of nuclear multifragmentation in statistical model

Abstract
HTML
Reference
Related

PDF

Abstract：
The evolution of nuclear disintegration mechanisms with increasing excitation energy, from compound nucleus to multifragmentation, has been studied by using the Statistical Multifragmentation Model (SMM) within a micro-canonical ensemble. We discuss the observable characteristics as functions of excitation energy in multifragmentation, concentrating on the isospin dependence of the model in its decaying mechanism and break-up fragment configuration by comparing the A₀=200, Z₀=78 and A₀=200, Z₀=100 systems. The calculations indicate that the neutron-rich system (Z₀=78) translates to a fission-like process from evaporation later than the symmetric nucleus at a lower excitation energy, but gets a larger average multiplicity as the excitation energy increases above 1.0 MeV/u.

References

[1]

Dorf J, Botvina A S, Iljinov A S, MishustinI N. Phys. Rep., 1995, 257: 1332 Gross D H E. Rep. Prog. Phys., 1990, 53: 6053 PAN J, Gupta S D. Phys. Rev. C, 1995, 51: 13844 Gupta S D, PAN J, Tsang M B. Phys. Rev. C, 1996, 54: R28205 Bauer W. Phys. Rev. C, 1988, 38: 12976 Pratt S, Montoya C, Ronning F. Phys. Lett. B, 1995, 349: 2617 Latora V, Belkacem M, Bonasera A. Phys. Rev. Lett., 1994, 73: 17658 Gupta S D, Mekjian A Z. Phys. Rev. C, 1998, 57: 13619 Botvina A S et al. Nucl. Phys. A, 1987, 475: 66310 Finn J E et al. Phys. Rev. Lett., 1982, 49: 132111 Minich R W et al. Phys. Lett. B, 1982, 118: 45812 Hirsch A S et al. Phys. Rev. C, 1984, 29: 50813 Moretto L G, Wozniak G J et al. Rev. Nucl. Part. Sci., 1993, 43: 37914 Bondorf J P et al. Nucl. Phys. A, 1985, 443: 32115 Bondorf J P, Donangelo R, Mishusting I N. Nucl. Phys. A, 1985, 444: 46016 Sneppen K. Nucl. Phys. A, 1987, 470: 21317 Sneppen K, Donangelo R. Phys. Rev. C, 1989, 39: 26318 Bondorf J P et al. Phys. Lett. B, 1985, 150: 5719 Mishusin I N. Nucl. Phys. A, 1985, 447: 67C20 Barz H W, Bondorf J P, Donangelo R. Phys. Lett. B, 1986, 169: 31821 Barz H W, Bondorf J P, Donangelo R. Nucl. Phys. A, 1986, 448: 75322 Donangelo R, Sneppen K, Souza S R. Computer Physics Communications, 2001, 140: 40523 Gross D H E. Phys. Rep., 1997, 279: 11924 Henzlova D et al. Nucl. Part. Phys., 2010, 37: 08501025 Reuter P T, Bugaev K A. Phy. Lett. B, 2001, 517: 233-23826 Tsang M B, Gelbke C K X et al. Phys. Rev. C, 2001, 64: 05461527 Raduta A R, Gulminelli F. Phys. Rev. C, 2007, 75: 02460528 Bondorf J P, Botvina A S, Mishustin I N. Phys. Rev. C, 1998, 58: R2729 Aguiar C E, Donangelo R, Souza S R. Phys. Rev. C, 2006, 73: 02461330 Souza S R, Carlson B V, Donangelo R et al. Phys. Rev. C, 2009, 79: 05460231 Audi G, Wapstra A H. Nucl. Phys. A, 1995, 595: 40932 Souza S R, Danielewicz P, Gupta S D et al. Phys. Rev. C, 2003, 67: R05160233 Elliott J B, Hirsch A S. Phys. Rev. C, 2000, 61: 05460534 Chomaz P, Du ot V, Gulminelli F. Phys. Rev. Lett., 2000, 85: 358735 Das C B, Gupta S D. Phys. Rev. C, 2003, 68: 01460736 Samaddar S K, de J N, Shlomo S. Phys. Rev. C, 2004, 69: 064615

[1]	Ying Cui , Ying-Xun Zhang , Zhu-Xia Li . In-medium NN→NΔ cross section and its dependence on effective Lagrange parameters in isospin-asymmetric nuclear matter. Chinese Physics C, 2019, 43(2): 024105. doi: 10.1088/1674-1137/43/2/024105
[2]	Min Liu , Yu Gao , Ning Wang . Statistical errors in Weizsäcker-Skyrme mass model. Chinese Physics C, 2017, 41(11): 114101. doi: 10.1088/1674-1137/41/11/114101
[3]	Ya-Fei Guo , Peng-Hui Chen , Fei Niu , Hong-Fei Zhang , Gen-Ming Jin , Zhao-Qing Feng . Isospin splitting of nucleon effective mass and symmetry energy in isotopic nuclear reactions. Chinese Physics C, 2017, 41(10): 104104. doi: 10.1088/1674-1137/41/10/104104
[4]	ZHANG Ao , GUO Wen-Jun , HUANG Jiang-Wei , YANG Lin-Meng . Isospin effect of the in-medium nucleon-nucleon cross section in excited nuclear reactions. Chinese Physics C, 2014, 38(5): 054103. doi: 10.1088/1674-1137/38/5/054103
[5]	ZUO Wei , GAN Sheng-Xin . Single particle potentials of asymmetric nuclear matter in different spin-isospin channels. Chinese Physics C, 2012, 36(10): 967-972. doi: 10.1088/1674-1137/36/10/009
[6]	MA Chun-Wang , WANG Shan-Shan . Isospin dependence of projectile fragmentation and neutron-skin thickness of neutron-rich nuclei. Chinese Physics C, 2011, 35(11): 1017-1021. doi: 10.1088/1674-1137/35/11/007
[7]	LIU Min , LI Zhu-Xia , WANG Ning , ZHANG Feng-Shou . Exploring nuclear symmetry energy with isospin dependence in neutron skin thickness of nuclei. Chinese Physics C, 2011, 35(7): 629-634. doi: 10.1088/1674-1137/35/7/006
[8]	WANG Hong-Min , HOU Zhao-Yu , LIU Jia-Fu , SUN Xian-Jing . J/ψ-N center of mass energy dependence of nuclear absorption effect on J/ψ production. Chinese Physics C, 2010, 34(1): 22-27. doi: 10.1088/1674-1137/34/1/004
[9]	SHAO Li-Jing , ZHANG Yun-Hua , MA Bo-Qiang . Parton distribution functions and nuclear EMC effect in a statistical model. Chinese Physics C, 2010, 34(9): 1417-1420. doi: 10.1088/1674-1137/34/9/059
[10]	FENG Sheng-Qin , DU Xiao-Chao . Dependence of multiplicity and transverse energy distributions on nuclear geometry at RHIC. Chinese Physics C, 2009, 33(S1): 52-54. doi: 10.1088/1674-1137/33/S1/017
[11]	ZUO Wei , ZHOU Shan-Gui , LI Jun-Qing , ZHAO En-Guang , Scheid W . Decomposition of the equation of state of asymmetric nuclear matter into different spin-isospin channels. Chinese Physics C, 2009, 33(7): 547-551. doi: 10.1088/1674-1137/33/7/008
[12]	ZHANG Fang , ZUO Wei , CHEN Ji-Yan , ZHOU Zhen-Xiao . Effect of entrance-channel asymmetry on the isospin dependence of nucleon emission in heavy ion collisions. Chinese Physics C, 2008, 32(7): 561-564. doi: 10.1088/1674-1137/32/7/010
[13]	Zhang Fengshou , Ge Lingxiao . Static Theory for Nuclear Multifragmentation I. Phase Transition and Multifragmentation. Chinese Physics C, 1997, 21(S2): 63-72.
[14]	Zhang Fengshou , E. Suraud , J. L. Laville . Energetic Protons and Cold Nuclear Multifragmentation Pattern. Chinese Physics C, 1997, 21(S3): 43-50.
[15]	Hu Zhanning , Hou Boyu . Integrability Conditions of the Three-dimensional Exactly Solved Model-Baxter-Bazhanov Model in Statistical Mechanics. Chinese Physics C, 1995, 19(S2): 143-150.
[16]	Shuanquan Luo , Cheng-Shing Wang . Thomas-Fermi Statistical Model Theory for the Surface Energy of Hot Nuclei. Chinese Physics C, 1995, 19(S2): 199-205.
[17]	Luo Chuanwang , Huang Tao , Guo Xingheng , Li Jinping , Lu Goungru . Model Dependence of the BSW Approach. Chinese Physics C, 1994, 18(S2): 151-166.
[18]	Hu Jimin , An Yu . Nuclear Macro-Microscopic Model. Chinese Physics C, 1992, 16(S3): 339-342.
[19]	Qi Dahai , Sa Benhao . Statistical Description of the Incident Energy Dependence of Mass Distribution of Fragments in ¹²C (15--45 MeV/A) + ⁶³Cu reactions. Chinese Physics C, 1990, 14(S3): 319-323.
[20]	Li Zibang , Peng Hongan . Statistical Model for Partons in Nucleon, EMC Effect and Gluon Distribution Functions of Nucleon Inside Nuclei. Chinese Physics C, 1988, 12(S2): 165-174.

Access

Get Citation

ZHANG Lei, XIE Dong-Zhu, ZHANG Yan-Ping and GAO Yuan. Isospin dependence of nuclear multifragmentation in statistical model[J]. Chinese Physics C, 2011, 35(6): 567-571. doi: 10.1088/1674-1137/35/6/011

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2010-10-25
Revised: 2010-11-08

Article Metric

Article Views(2492)
PDF Downloads(503)
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

Isospin dependence of nuclear multifragmentation in statistical model

Received Date: 2010-10-25

Accepted Date: 2010-11-08

Available Online: 2011-06-05

Abstract: The evolution of nuclear disintegration mechanisms with increasing excitation energy, from compound nucleus to multifragmentation, has been studied by using the Statistical Multifragmentation Model (SMM) within a micro-canonical ensemble. We discuss the observable characteristics as functions of excitation energy in multifragmentation, concentrating on the isospin dependence of the model in its decaying mechanism and break-up fragment configuration by comparing the A₀=200, Z₀=78 and A₀=200, Z₀=100 systems. The calculations indicate that the neutron-rich system (Z₀=78) translates to a fission-like process from evaporation later than the symmetric nucleus at a lower excitation energy, but gets a larger average multiplicity as the excitation energy increases above 1.0 MeV/u.

HTML

Reference (1)

Isospin dependence of nuclear multifragmentation in statistical model

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article

Isospin dependence of nuclear multifragmentation in statistical model

HTML

目录