核物质状态方程中动量相关作用可能的探针

刘建业; 郭文军

doi:10.7498/aps.59.6933

摘要

研究了动量相关作用对于中子-质子比动能谱rb(Ek)的效应,发现rb(Ek)灵敏的依赖于动量相关作用而弱的依赖于介质中核子-核子碰撞截面和对称势.因此rb(Ek)是提取重离子碰撞中动量相关作用信息的可能探针.同时,对于丰中子弹核和相同质量稳定弹核在相同入射道条件下,丰中子碰撞系统明显加强了

关键词:

The effects of momentum dependent interaction on the kinetic energy spectrum of the neutron-proton ratiorb(Ek)in the equation of state of nuclear matter was investigated.We found that the kinetic energy spectrum of the neutron-proton ratio rb(Ek) depends sensitively on the momentum dependent interaction and weakly on the in-medium nucleon-nucleon cross section and symmetry potential so that the rb(Ek) is a sensitive physical probe for extracting the information of momentum dependent interaction in the heavy ion collisions. At the same time, the comparing investigate between rb(Ek) for the neutron-rich collision system and the same mass stable collision system gives a important judgment for extracting the information of momentum dependent interaction in the heavy ion collisions.

Keywords:

nucleon-nucleon collision cross section /
symmetry potential /
momentum dependent interaction

作者及机构信息

刘建业²,
郭文军¹

(1)上海理工大学理学院,上海 200093; (2)天水师范学院物理系,天水 741000,中国科学院近代物理研究所,兰州 730000,重离子加速器国家实验室原子核理论中心,兰州 730000

基金项目: 国家自然科学基金重点项目(批准号:10435080)、国家自然科学基金面上项目(批准号:10575075)和中国科学院知识创新工程重要方向项目(批准号:KJCXZ-SW-N02)资助的课题.

Authors and contacts

Guo Wen-Jun²,
Liu Jian-Ye¹

(1)Physics Department of Tianshui Normal University, Tianshui 741000, China, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China, Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator,Lanzhou 730000,; (2)Science College University of Shanghai for Science and Technology, Shanghai 200093, China

参考文献

[1]	Li B A, Schroeder W U 2001 Isospin Physics in Heavy-Ion Collisions at Intermediate Energies (New York: Nova Science Publishers, Inc)
[2]	Aichelin J, Rosenhauer A, Peilert A G, Stoeeker H, Greiner W 1987 Phys. Rev. Lett. 58 1926
[3]	Aichelin J, Peilert G, Bohnet A, Rosenhauer A, Stocker H, Greiner W 1988 Phys. Rev. C 37 2451
[4]	Bertsch G F, Gupta D S 1988 Phys. Rep. 160 189
[5]	Li B A, Ko C M, Bauer W 1998 Int. J. Mod. Phys. E 7 147
[6]	Liu J Y, Guo W J, Xing Y Z, Zuo W, Lee X G 2003 Phys. Rev. C 37 024608
[7]	Yang Y F, Liu J Y, Zou W, Guo W J, Zhao Q 2005 Chin. Phys. Lett. 18 1040 (in Chinese)[杨富中、刘建业、左维、郭文军、赵强 2005 物理快报 18 1040]
[8]	Liu J Y, Guo W J, Xing Y Z, Lee X G 2005 Chin. Phys. Lett. 22 65 (in Chinese)[刘建业、郭文军、邢永忠、李希国 2005 物理快报 22 65]
[9]	Liu J Y, Gou W J, Xing Y Z, Lee X G 2008 Int. J. Mod. Phys. E 17 645
[10]	Liu H, Liu J Y, Li J Q 1996 Z. Phys. A 354 311
[11]	Ngo C, Ngo V, Leray S, Spina E 1989 Nucl. Phys. A 499 148
[12]	Klakow D, Welke G, Bauer W 1993 Phys. Rev. C 48 1982
[13]	Alkahzov G, Bauer T, Bertini R, Bimbot L, Bing Q, Boudard A, Bruge G, Catz H, Chaumeaux A 1977 Nucl. Phys. A 280 365
[14]	Liu J Y, Guo W J, Wang S J, Zuo W, Zhao Q, Yang Y F 2001 Phys. Rev. Lett. 86 975

施引文献

[1]	Li B A, Schroeder W U 2001 Isospin Physics in Heavy-Ion Collisions at Intermediate Energies (New York: Nova Science Publishers, Inc)
[2]	Aichelin J, Rosenhauer A, Peilert A G, Stoeeker H, Greiner W 1987 Phys. Rev. Lett. 58 1926
[3]	Aichelin J, Peilert G, Bohnet A, Rosenhauer A, Stocker H, Greiner W 1988 Phys. Rev. C 37 2451
[4]	Bertsch G F, Gupta D S 1988 Phys. Rep. 160 189
[5]	Li B A, Ko C M, Bauer W 1998 Int. J. Mod. Phys. E 7 147
[6]	Liu J Y, Guo W J, Xing Y Z, Zuo W, Lee X G 2003 Phys. Rev. C 37 024608
[7]	Yang Y F, Liu J Y, Zou W, Guo W J, Zhao Q 2005 Chin. Phys. Lett. 18 1040 (in Chinese)[杨富中、刘建业、左维、郭文军、赵强 2005 物理快报 18 1040]
[8]	Liu J Y, Guo W J, Xing Y Z, Lee X G 2005 Chin. Phys. Lett. 22 65 (in Chinese)[刘建业、郭文军、邢永忠、李希国 2005 物理快报 22 65]
[9]	Liu J Y, Gou W J, Xing Y Z, Lee X G 2008 Int. J. Mod. Phys. E 17 645
[10]	Liu H, Liu J Y, Li J Q 1996 Z. Phys. A 354 311
[11]	Ngo C, Ngo V, Leray S, Spina E 1989 Nucl. Phys. A 499 148
[12]	Klakow D, Welke G, Bauer W 1993 Phys. Rev. C 48 1982
[13]	Alkahzov G, Bauer T, Bertini R, Bimbot L, Bing Q, Boudard A, Bruge G, Catz H, Chaumeaux A 1977 Nucl. Phys. A 280 365
[14]	Liu J Y, Guo W J, Wang S J, Zuo W, Zhao Q, Yang Y F 2001 Phys. Rev. Lett. 86 975

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