用统计磨损-烧蚀模型重新检验等压产额比中的“有限尺寸”效应
Reexamining the "finite-size" effects in isobaric yield ratios using a statistical abrasion-ablation model
摘要：
在标准巨正则和正则统计系综（SGC/CSE）方法中，等压产额比（IYR）的“有限尺寸”效应阻碍了物理参数的实际测量。对于丰中子核诱发反应，SGC/CSE的结论可能存在疑问。为了研究IYR是否具有“有限尺寸”效应，使用改进的统计磨损-烧蚀（SAA）模型重新检查镜像核的IYR [IYR（m）]。结果表明，当入射粒子的中子丰度不太高时，IYR（m）与入射粒子的同位旋有关，但不能排除与粒子尺寸的关系。在由非常富中子的射弹引起的反应中，得到了与SGC/CSE模型相反的结果，即，在SAA和实验结果中，IYR（m）对弹丸尺寸和同位旋的依赖性减弱并消失。
英文摘要：
The "finite-size" effects in the isobaric yield ratio (IYR), which are shown in the standard grand-canonical and canonical statistical ensembles (SGC/CSE) method, is claimed to prevent obtaining the actual values of physical parameters. The conclusion of SGC/CSE maybe questionable for neutron-rich nucleus induced reaction. To investigate whether the IYR has "finite-size" effects, the IYR for the mirror nuclei [IYR(m)] are reexamined using a modified statistical abrasion-ablation (SAA) model. It is found when the projectile is not so neutron-rich, the IYR(m) depends on the isospin of projectile, but the size dependence can not be excluded. In reactions induced by the very neutron-rich projectiles, contrary results to those of the SGC/CSE models are obtained, i.e., the dependence of the IYR(m) on the size and the isospin of the projectile is weakened and disappears both in the SAA and the experimental results.
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。
