【摘 要】
：
在同位旋相关的BHF理论框架内,研究了微观三体核力对非对称核物质状态方程和原子核对称能的影响. 结果表明:即使引进了微观三体核力后,核物质结合能随同位旋非对称度的变化关
【机 构】
：
中国科学院近代物理研究所,兰州重离子加速器国家实验室原子核理论研究中心,INFN-LNS
论文部分内容阅读
在同位旋相关的BHF理论框架内,研究了微观三体核力对非对称核物质状态方程和原子核对称能的影响. 结果表明:即使引进了微观三体核力后,核物质结合能随同位旋非对称度的变化关系仍然能够在整个同位旋自由度范围内(0≤β≤ 1) 相当精确地满足二次方规律. 在核物质饱和密度ρ0=0.17fm-3处,三体核力对于对称能Esym的影响很小,考虑三体核力后得到的对称能为30.71MeV,与其经验值符合得很好;对于高密度核物质,由于三体核力效应,对称能明显增大,而且三体核力使对称能随密度的增大要比不考虑三体核力情况下的计算结果陡得多. 同时还给出了对称能的密度依赖关系的一个简单的参数化形式.
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