Repulsive four-body interactions of α particles and quasistable nuclear α-particle condensates in heavy self-conjugate nuclei

被引：8

作者：

Bai, Dong ^{[1
]}

Ren, Zhongzhou ^{[2
]}

机构：

[1] Nanjing Univ, Sch Phys, Nanjing 210093, Jiangsu, Peoples R China

[2] Tongji Univ, Sch Phys Sci & Engn, Shanghai 200092, Peoples R China

来源：

PHYSICAL REVIEW C | 2018年 / 97卷 / 05期

基金：

中国国家自然科学基金;

关键词：

ORTHOGONALITY CONDITION MODEL; STATES; C-12;

D O I：

10.1103/PhysRevC.97.054301

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

We study the effects of repulsive four-body interactions of alpha-particles on nuclear alpha-particle condensates in heavy self-conjugate nuclei using a semianalytic approach, and find that the repulsive four-body interactions could decrease the critical number of alpha-particles, beyond which quasistable alpha-particle condensate states can no longer exist, even if these four-body interactions make only tiny contributions to the total energy of the Hoyle-like state of O-16. Explicitly, we study eight benchmark parameter sets, and find that the critical number N-cr decreases by vertical bar Delta N-cr vertical bar similar to 1-4 from N-cr similar to 11 with vanishing four-body interactions. We also discuss the effects of four-body interactions on energies and radii of alpha-particle condensates. Our study can be useful for future experiments to study alpha-particle condensates in heavy self-conjugate nuclei. Also, the experimental determination of N-cr will eventually help establish a better understanding on the alpha-particle interactions, especially the four-body interactions.

引用

页数：6

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