同位旋依赖的碎块判断方法对重离子碰撞观测量的影响

原子核物理评论 , 2013, 30(3): 324-330. doi: 10.11804/NuclPhysRev.30.03.324

同位旋依赖的碎块判断方法对重离子碰撞观测量的影响

1.中国原子能科学研究院核物理研究所,北京,102413

2.中国原子能科学研究院核物理研究所,北京,102413

3.中国原子能科学研究院核物理研究所,北京 102413;广西师范大学物理系,广西桂林 541004

4.密西根州立大学国家超导回旋加速器实验室,东兰辛 48824,美国

基金项目: National Natural Science Foundation of China(11075215,10875031,11005022,11005155,11275052) National Science Foundation of USA(PHY-0606007) 国家重点基础研究发展计划项目(973计划)(2013CB834404) 美国国家自然科学基金资助项目(PHY-0606007) 核能开发科研项目(科工二司)([2011]767) Nuclear Energy Development and Research Program in China([2011]767) 国家自然科学基金资助项目(11075215,10875031,11005022,11005155,11275052) National Basic Research Program of China(973 Program)(2013CB834404)

关键词：同位旋依赖的碎块判断方法 , 同位旋敏感观测量 , 系统平衡度 , 重离子碰撞

Effect of Isospin Dependent Cluster Recognition on Observables in Heavy Ion Collisions

Keywords： isopin-dependent cluster recognition method , isospin sensitive observable , degree of system equilibrium , heavy ion collision

该工作提出了一个同位旋依赖碎块判断方法用以描述重离子碰撞过程中的碎块形成.利用该方法可以改善输运理论对于核子以及轻带电粒子产额的描写,其在计算中降低了发射核子产额、增加碎块(特别是丰中子碎块)的产额.对于丰中子轻带电粒子的增强主要出现在中心快度区.研究表明,该方法对于同位旋敏感的观测量,如n/p,,t/3He,Ryieldmid和isoscaling parameters等,以及系统的平衡度的量度都会产生影响.

参考文献

[1]	BROWN B A.Phys Rev C,1991,43:R1513.
[2]	TSANG M B,ZHANG Yingxun,DANIELEWICZ P,et al.Phys Rev Lett,2009,102:122701.
[3]	DANIELEWICZ P,LACEY R,LYNCH W G.Science,2006,298:1592.
[4]	LI Bao-an,CHEN Lie-wen,KO Che-min.Phys Rep,2008,464:113.
[5]	BONDORF J P,BOTVINA A S,ILJINOV A S,et al.Phys Rep,1995,257:133.
[6]	GROSS D H E.Rep Prog Phys,1990,53:605.
[7]	AICHELIN J.Phys Rep,1991,202:233.
[8]	COLONNA M,FABBRI G.Nucl Phys A,2004,742:337.
[9]	CHOMAZ P,COLONNA M,RANDRUP J.Phys Rep,2004,389:263.
[10]	LE F A,AICHELIN J.Phys Rev Lett,2008,100:042701.
[11]	DAS C B,GUPTA S D,LYNCH W G,et al.Phys Rep,2005,406:1.
[12]	ZHANG Yingxun,COUPLAND D D S,DANIELEWICZ P,et al.Phys Rev C,2012,85:024602.
[13]	COUPLAND D D S,LYNCH W G,TSANG M B,et al.Phys Rev C,2011,84:054603.
[14]	LI Bao-an,CHEN Lie-wen.Phys Rev C,2005,72:064611.
[15]	ZHANG Yingxun,DANIELEWICZ P,FAMIANO M,et al.Phys Lett B,2008,664:145.
[16]	ONO A,DANIELEWICZ P,FREIDMAN W A,et al.Phys Rev C,2003,68:051601(R).
[17]	ZHANG Yingxun,LI Zhuxia.Phys Rev C,2005,71:024604.
[18]	ZHANG Yingxun,LI Zhuxia.Phys Rev C,2006,74:014602.
[19]	ZHANG Yingxun,LI Zhuxia,DANIELEWICZ P.Phys Rev C,2007,75:034615.
[20]	NEBAUER R,AICHELIN J (INDRA collaboration).Nucl Phys A,1999,658:67.
[21]	LIU T X,VAN G M J,LIU X D,et al.Phys Rev C,2004,69:014603.
[22]	RUSSOTO P,DE E,PAGANO A,et al.Phys Rev C,2010,81:064605.
[23]	KOHLEY Z,MAY L W,WUENSCHEL S,et al.Phys Rev C,2011,8 3:044601.
[24]	HUDAN S,CHBIHI A,FRANKLAND J D,et al.Phys Rev C 2003,67:064613.
[25]	DORSO C O,RANDRUP J.Phys Lett B,1993,301:328.
[26]	PURI R K,AICHELIN J.J Comput Phys,2000,162:245.
[27]	GOSSIAUX P B,PURI R K,HARTNACK C,et al.Nucl Phys A,1997,619:379.
[28]	SUPRIYA G,RAJEEV K P.Phys Rev C,2011,83:047601.
[29]	ZHANG Yingxum,LI Zhuxia,ZHOU Chengshuang,et al.Phys Rev C,2012,86:051602(R).
[30]	XU H S,TSANG M B,LIU T X,et al.Phys Rev Lett,2000,85:716.
[31]	TSANG M B,GELBKE C K,LIU X D,et al.Phys Rev C,2001,64:054615.
[32]	SOUZA S R,TSANG M B,CARLSON B B,et al.Phys Rev C,2009,80:041602(R).
[33]	TSANG M B,BOUGAULT R,CHARITY R,et al.Euro Phys Jour A,2006,30:129
[34]	Euro Phys Jour A,2007,32:243.
[35]	COLONNA M,BARAN V,DI TORO M.et al.Phys Rev C,2008,78:064618.
[36]	RESIDORF W,ANDRONIC A,GOBBI A,et al.(FOPI Collaboration).Phys Rev Lett,2004,92:232301.

上一张下一张

计量

下载量()
访问量()

作者相关

文章评分

您的评分：
1

0%
2

0%
3

0%
4

0%
5

0%

材料期刊网