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arXiv 0905.1599nucl-thnucl-ex
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非对称核物质的同位旋相关性质

Isospin dependent properties of asymmetric nuclear matter

P. Roy Chowdhury, D. N. Basu, C. Samanta

摘要:

利用密度相关的M_3 Y相互作用的等差线分量和等矢量分量,系统地研究了非对称核物质的同位旋相关体性质,确定了核对称能的密度相关性.对称核物质的不可压缩性$K_\infty$、等压不可压缩性中与同位旋相关的部分$K_{asy}$和斜率$L$都与最近从偶A Sn同位素巨共振的同位素相关性测量中提取的约束非常一致,从核的中子皮厚度和对中能重中子的同位旋扩散和同位素标度实验数据的分析,离子碰撞这项工作为理解极端条件下的核物质提供了基本依据,并验证了从最近的实验数据中获得的重要经验约束。

英文摘要:

The density dependence of nuclear symmetry energy is determined from a systematic study of the isospin dependent bulk properties of asymmetric nuclear matter using the isoscalar and the isovector components of density dependent M3Y interaction. The incompressibility $K_\infty$ for the symmetric nuclear matter, the isospin dependent part $K_{asy}$ of the isobaric incompressibility and the slope $L$ are all in excellent agreement with the constraints recently extracted from measured isotopic dependence of the giant monopole resonances in even-A Sn isotopes, from the neutron skin thickness of nuclei and from analyses of experimental data on isospin diffusion and isotopic scaling in intermediate energy heavy-ion collisions. This work provides a fundamental basis for the understanding of nuclear matter under extreme conditions, and validates the important empirical constraints obtained from recent experimental data.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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