Deeply bound pionic states of heavy nuclei
Deeply bound pionic states of heavy nuclei
复制标题
重核的深度束缚的介子态
DOI：
10.1016/0370-2693(88)91012-x
复制
发表时间：
1988
影响因子：
4.4
通讯作者：
T. Yamazaki
中科院分区：
文献类型：
--
作者：
H. Toki;T. Yamazaki
用标准π-核光学势计算了重核最低1 s轨道的π束缚态谱。s轨道（l=0）的能级在很大程度上由于S波π介子与原子核的排斥相互作用而向上移动，这也减少了留在原子核内的π−的比例。因此，即使对于π−− 208 Pb，深束缚态也有足够小的能级宽度，可以被认为是准稳定态。我们提出了建立和探测重核深束缚π介子态的可能方法。
We calculated the pionic bound-state spectra of heavy nuclei from the lowest 1s orbits using the standard pion-nucleus optical potential. The energy levels of the s-orbits (l=0) are shifted upward largely by the repulsive S-wave pion-nucleus interaction, which also reduces the fraction of π−staying inside the nucleus. Thus, even for π−−208Pb , the deeply bound states have small enough level widths so as to be considered as quasi-stable states. We propose possible methods for the creation and detection of deeply bound pionic states of heavy nuclei.