Symmetry energy and experimentally observed cold fragments in intermediate heavy-ion collisions

Su-Ya-La-Tu Zhang; Mei-Rong Huang; R. Wada; Xing-Quan Liu; Wei-Ping Lin; Jian-Song Wang

doi:10.1088/1674-1137/41/4/044001

Chinese Physics C> 2017, Vol. 41> Issue(4) : 044001 DOI: 10.1088/1674-1137/41/4/044001

Symmetry energy and experimentally observed cold fragments in intermediate heavy-ion collisions

1.
College of Physics and Electronics Information, Inner Mongolia University for Nationalities, Tongliao 028000, China
2.
Cyclotron Institute, Texas A&
3.
Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000,China

Abstract
HTML
Reference
Related

PDF

Abstract：
An attempt is made to study the symmetry energy at the time of primary fragment formation from the experimentally observed cold fragments for a neutron-rich system of ⁶⁴Ni+⁹Be at 140 MeV/nucleon, utilizing the recent finding that the excitation energy becomes lower for more neutron-rich isotopes with a given Z value. The extracted a_sym/T values from the cold fragments, based on the Modified Fisher Model (MFM), are compared to those from the primary fragments of the antisymmetrized molecular dynamics (AMD) simulation and become consistent with the simulation when the I=N-Z value becomes larger, indicating that the excitation energy of these neutron-rich isotopes is indeed lower.
- symmetry energy ,
- modified Fisher model ,
- antisymmetrized molecular dynamics simulations

References

[1]	Bao-An. Li et al, Phys. Rep., 464:113 (2008)
[2]	J. M. Lattimer and M. Prakash, Science, 23:536 (2004)
[3]	M. Huang et al, Phys. Rev. C, 81:044620 (2010)
[4]	M. Huang et al, Phys. Rev. C, 82:054602 (2010)
[5]	W. Lin et al, Phys. Rev. C, 89:021601(R) (2014)
[6]	W. Lin et al, Phys. Rev. C, 90:044603 (2014)
[7]	X. Liu et al, Phys. Rev. C, 90:014605 (2014)
[8]	A. Bonasera, F. Gulminelli, and J. Molitoris, Phys. Rep., 243:1 (1994)
[9]	A. Bonasera et al, Riv. Nuovo Cimento, 23:1 (2000)
[10]	M. E. Fisher, Rep. Prog. Phys., 30:615 (1967)
[11]	R. W. Minich et al, Phys. Lett. B, 118:458 (1982)
[12]	A. S. Hirsch et al, Nucl. Phys. A, 418:267c (1984)
[13]	Z. Chen et al, Phys. Rev. C, 81:064613 (2010)
[14]	C. W. Ma, F. Wang, Y. G. Ma and C. Jin, Phys. Rev. C, 83:064620 (2011)
[15]	C. W. Ma, J. Pu, S. S. Wang, H. L. Wei, Chin. Phys. Lett., 29:062101 (2012)
[16]	C. W. Ma, X. L. Zhao, J. Pu, S. S Wang, C.Y. Qiao, X. Feng, R. Wada, and Y. G. Ma, Phys. Rev. C, 88:014609 (2013)
[17]	S. Mallik and G. Chaudhuri, Phys. Rev. C, 87:011602R (2013)
[18]	M. R. D. Rodrigues et al, Phys. Rev. C, 88:034605 (2013)
[19]	M. Mocko et al, Phys. Rev. C, 74:054612 (2006)
[20]	A. Bonasera et al, Phys. Rev. Lett., 101:122702 (2008)
[21]	C. F. von Weizscker, Z. Phys., 96:431 (1935)
[22]	H. A. Bethe, Rev. mod. Phys., 8:82 (1936)
[23]	A. Ono and H. Horiuchi, Phys. Rev. C, 53:2958 (1996)
[24]	A. Ono, Phys. Rev. C, 59:853 (1999)
[25]	A. Ono, S. Hudan, A. Chbihi, J. D. Frankland, Phys. Rev. C, 66:014603 (2002)
[26]	X. Liu et al, Phys. Rev. C, 92:014623 (2015)
[27]	M. V. Ricciardi et al, Nucl. Phys. A, 733:299 (2004)
[28]	M. D. Agostino et al, Nucl. Phys. A, 861:47 (2011)
[29]	R. J. Charity et al, Nucl. Phys. A, 483:371 (1988)

[1]	Ling Liu , Yu-Wei Lu , Shuai Sun , Li-Gang Cao . Constraining Symmetry Energy from Pygmy Dipole Resonances in ⁶⁸Ni and ¹³²Sn. Chinese Physics C, 2025, 49(3): 1-6.
[2]	Xiao-Rong Ma , Shuai Sun , Rong An , Li-Gang Cao . Correlation between the charge radii difference in mirror partner nuclei and thesymmetry energy slope. Chinese Physics C, 2024, 48(8): 084104. doi: 10.1088/1674-1137/ad47a8
[3]	Shi-Hui Cheng , Jing Wen , Li-Gang Cao , Feng-Shou Zhang . Neutron skin thickness of ⁹⁰Zr and symmetry energy constrained by charge exchange spin-dipole excitations. Chinese Physics C, 2023, 47(2): 024102. doi: 10.1088/1674-1137/aca38e
[4]	Chencan Wang , Jinniu Hu , Ying Zhang , Hong Shen . The nuclear symmetry energy from relativistic Brueckner-Hartree-Fock model. Chinese Physics C, 2022, 46(6): 064108. doi: 10.1088/1674-1137/ac5b0f
[5]	Y. Q. He , J. K. Ge , G. J. Fu , H. Jiang . Isospin dependence of the nuclear binding energy. Chinese Physics C, 2021, 45(1): 014106. doi: 10.1088/1674-1137/abc23d
[6]	Nai-Bo Zhang , Bin Qi , Shou-Yu Wang . Key factor for determining relation between radius and tidal deformability of neutron stars: Slope of symmetry energy. Chinese Physics C, 2020, 44(6): 064103. doi: 10.1088/1674-1137/44/6/064103
[7]	Wenmei Guo , M. Colonna , V. Greco , U. Lombardo , H.-J. Schulze . The spin-isospin decomposition of the nuclear symmetry energy from low to high density. Chinese Physics C, 2020, 44(5): 054110. doi: 10.1088/1674-1137/44/5/054110
[8]	Jun Su . Constraining symmetry energy at subnormal density by isovector giant dipole resonances of spherical nuclei. Chinese Physics C, 2019, 43(6): 064109. doi: 10.1088/1674-1137/43/6/064109
[9]	Wen-Jie Xie , Feng-Shou Zhang . Effects of density-and momentum-dependent potentials in Au+Au collisions at intermediate energies. Chinese Physics C, 2018, 42(10): 104103. doi: 10.1088/1674-1137/42/10/104103
[10]	Ya-Fei Guo , Peng-Hui Chen , Fei Niu , Zhao-Qing Feng . Isospin effect in peripheral heavy-ion collisions at Fermi energies. Chinese Physics C, 2018, 42(12): 124106. doi: 10.1088/1674-1137/42/12/124106
[11]	Mariana Dutra , Odilon Louren , Or Hen , Eliezer Piasetzky , Débora P. Menezes . The symmetry energy γ parameter of relativistic mean-field models. Chinese Physics C, 2018, 42(6): 064105. doi: 10.1088/1674-1137/42/6/064105
[12]	W. M. Seif , A. S. Hashem . Constraints on the nuclear symmetry energy and its density slope from the α decay process. Chinese Physics C, 2018, 42(6): 064104. doi: 10.1088/1674-1137/42/6/064104
[13]	Rongyao Yang , Sina Wei , Weizhou Jiang . Ground-state properties of light kaonic nuclei signaling symmetry energy at high densities. Chinese Physics C, 2018, 42(2): 024102. doi: 10.1088/1674-1137/42/2/024102
[14]	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
[15]	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
[16]	Jun-Long Tian , Hai-Tao Cui , Teng Gao , Ning Wang . Effect of Wigner energy on the symmetry energy coefficient in nuclei. Chinese Physics C, 2016, 40(9): 094101. doi: 10.1088/1674-1137/40/9/094101
[17]	LAN Chun-E , XUE Jian-Ming , WANG Yu-Gang , ZHANG Yan-Wen . Molecular dynamics simulation of latent track formation in α-quartz. Chinese Physics C, 2013, 37(3): 038201. doi: 10.1088/1674-1137/37/3/038201
[18]	LIU Bei-Bei , OUYANG Fei , CHEN Wei . Influence of coupling constants on nuclear symmetry energy. Chinese Physics C, 2013, 37(4): 044103. doi: 10.1088/1674-1137/37/4/044103
[19]	LIU Xiao-Jin , WU Chen , REN Zhong-Zhou . Effects of the density dependence of the symmetry energy on neutron stars. Chinese Physics C, 2010, 34(11): 1709-1713. doi: 10.1088/1674-1137/34/11/008
[20]	Chen Liewen , Zhang Xiaodong , Ge Lingxiao . Isospin Effects on Pre-Equilibrium Nucleon Emission in Heavy-Ion Collisions. Chinese Physics C, 1997, 21(S1): 465-470.

Access

Get Citation

Su-Ya-La-Tu Zhang, Mei-Rong Huang, R. Wada, Xing-Quan Liu, Wei-Ping Lin and Jian-Song Wang. Symmetry energy and experimentally observed cold fragments in intermediate heavy-ion collisions[J]. Chinese Physics C, 2017, 41(4): 044001. doi: 10.1088/1674-1137/41/4/044001

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2016-09-04

Fund

Supported by National Natural Science Foundation of China (U1432247, 11605097), National Basic Research Program of China (973 Program, 2014CB845405), Doctoral Scientific Research Foundation of Inner Mongolia University for the Nationalities (BS365)

Article Metric

Article Views(1499)
PDF Downloads(41)
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

Symmetry energy and experimentally observed cold fragments in intermediate heavy-ion collisions

Corresponding author: Mei-Rong Huang,

Corresponding author: R. Wada, huangmeirong@imun.edu.cn

1. College of Physics and Electronics Information, Inner Mongolia University for Nationalities, Tongliao 028000, China

2. Cyclotron Institute, Texas A&

3. Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000,China

Received Date: 2016-09-04

Available Online: 2017-04-05

Fund Project: Supported by National Natural Science Foundation of China (U1432247, 11605097), National Basic Research Program of China (973 Program, 2014CB845405), Doctoral Scientific Research Foundation of Inner Mongolia University for the Nationalities (BS365)

Abstract: An attempt is made to study the symmetry energy at the time of primary fragment formation from the experimentally observed cold fragments for a neutron-rich system of ⁶⁴Ni+⁹Be at 140 MeV/nucleon, utilizing the recent finding that the excitation energy becomes lower for more neutron-rich isotopes with a given Z value. The extracted a_sym/T values from the cold fragments, based on the Modified Fisher Model (MFM), are compared to those from the primary fragments of the antisymmetrized molecular dynamics (AMD) simulation and become consistent with the simulation when the I=N-Z value becomes larger, indicating that the excitation energy of these neutron-rich isotopes is indeed lower.

HTML

Reference (29)

Symmetry energy and experimentally observed cold fragments in intermediate heavy-ion collisions

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article