Isospin Effects on Pre-equilibrium NucleonEmission in Heavy Ion Collisions

Chen Liewen; Zhang Xiaodong; Ge Lingxiao

Chinese Physics C> 1996, Vol. 20> Issue(12) : 1091-1096

Isospin Effects on Pre-equilibrium NucleonEmission in Heavy Ion Collisions

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

Abstract
HTML
Reference
Related

PDF

Abstract：
The isospin-dependent symmetry energy,Coulomb energy and nucleon-nucleon cross sections are considered in the quantum molecular dynamics model. The influence of isospin effects on the emission of nucleons is discussed in the head-on collisions of the system ⁴⁰Ar+⁴⁰Ar at the incident energy of 25 MeV/u.It is observed that the ratio of neutron to proton of pre-equilibrium nucleons is higher than that of the reaction system and the symmetry energy enhances the emission of neutron but reduces the emission of proton,at the same time,that the isospin-dependent nucleon-nucleon cross sections favour the emission of both neutron and proton,but they seem to be more beneficial to the emission of proton.

References

[1]

D.Hilscher iet al/i,iPhys/i.iRev/i.,C36（1987）208.[2] DHilscher,inProc.ofaSpecialists's Meetingon Preequilibrium Nuclear Reactions,Semmering,Austria,10-12th,Feb1988.[3] DPolster iet al/i.,in Book of abstracts,International Noclear Physics Conference,Wieshaden Germany,July26-Aug.1,1992,p3.3.8.[4] 朱全伶、葛凌霄、张晓东，高能物理与核物理，18（1994）853.[5] 朱全伶、葛凌霄、李祝霞，高能物理与核物理，16（1992）658.[6] K.Chen iet al/i,iPhys/i iRev/i.,166（1968）949.[7] 葛凌霄，中能重离子碰撞动力学，中科院近物所研究生讲义，p264[8] A.玻尔，B.R.莫特逊，原子核结构，第一卷，第二分册，科学出版社，1976,p182.[9] Bao-AnLi,J #934; rgen Randrup,Probing isospin dependent reactinn dynamics using preequilibrium Nucleons,iPhys/i.iRev/i.,C,to be published.

Access

Get Citation

Chen Liewen, Zhang Xiaodong and Ge Lingxiao. Isospin Effects on Pre-equilibrium NucleonEmission in Heavy Ion Collisions[J]. Chinese Physics C, 1996, 20(12): 1091-1096.

Chen Liewen, Zhang Xiaodong and Ge Lingxiao. Isospin Effects on Pre-equilibrium NucleonEmission in Heavy Ion Collisions[J]. Chinese Physics C, 1996, 20(12): 1091-1096. shu

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

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

Article Metric

Article Views(3857)
PDF Downloads(578)
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 Effects on Pre-equilibrium NucleonEmission in Heavy Ion Collisions

Corresponding author: Chen Liewen,

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

Received Date: 1900-01-01
Accepted Date: 1900-01-01
Available Online: 1996-12-05

Abstract: The isospin-dependent symmetry energy,Coulomb energy and nucleon-nucleon cross sections are considered in the quantum molecular dynamics model. The influence of isospin effects on the emission of nucleons is discussed in the head-on collisions of the system ⁴⁰Ar+⁴⁰Ar at the incident energy of 25 MeV/u.It is observed that the ratio of neutron to proton of pre-equilibrium nucleons is higher than that of the reaction system and the symmetry energy enhances the emission of neutron but reduces the emission of proton,at the same time,that the isospin-dependent nucleon-nucleon cross sections favour the emission of both neutron and proton,but they seem to be more beneficial to the emission of proton.

HTML

Reference (1)

Link: IOPScience; SCOAP³; arXiv; Chinese Physical Society

Journal information: Introduction; Editorial Board; Others; Subscribe

Contact us: QQ: 1307685413; Tel: +86-010-88235947; Fax: +86-010-88233126; E-mail: cpc@ihep.ac.cn

CPC Website
IOP Website
CPC WeChat

Supported by: Beijing Renhe Information Technology Co. Ltd E-mail: info@rhhz.net

DownLoad: Full-Size Img PowerPoint

Return

Isospin Effects on Pre-equilibrium NucleonEmission in Heavy Ion Collisions

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article

Isospin Effects on Pre-equilibrium NucleonEmission in Heavy Ion Collisions

Corresponding author: Chen Liewen,

HTML

目录

[1]	A.G.Drentje . Gas-mixing: Ion Cooling or Reduced Turbulent Heating?. Chinese Physics C, 2007, 31(S1): 162-164.
[2]	LIU Chang-Long , LU Yi-Ying , YIN LI . Effects of Additional Vacancy-Like Defects Produced by Ion Impealations on Boron Thermal Diffusion in Silicon. Chinese Physics C, 2005, 29(11): 1107-1111.
[3]	Guo Hua . In-medium QMC Model Parameters and Quark Condensation in Nuclear Matter. Chinese Physics C, 1999, 23(5): 459-468.
[4]	Yang Jianjun , Ma Boqiang , Li Guanglie . Non-perturbative Quark Propagator and the Study of the Non-trivial Q² Dependence in the Nucleon Structure Functions. Chinese Physics C, 1997, 21(2): 146-156.
[5]	BES Collaboration . Experimental Study of Resonance f₂(1270) in the J/ψ Hadronic Decay. Chinese Physics C, 1993, 17(2): 97-106.
[6]	WU Zhong-Li . ANALYSIS OF THE MOMENTUM DISTRIBUTION WIDTH OF THE PREOJECTILE-LIKE-FRAGMENT FROM HEAVY ION COLLISIONS. Chinese Physics C, 1989, 13(8): 752-754.
[7]	Sa Ben-hao , Zhang Xi-zhen , Li Zhu-xia , Shi Yi-jin . A PRIMARY RESEARCH OF THE PHONON RENORMALIZATION OF NUCLEAR FIELD THEORY. Chinese Physics C, 1980, 4(3): 398-400.