当前位置: X-MOL 学术Phys. Rev. Lett. › 论文详情
Large isospin asymmetry in22Si/22O mirror Gamow-Teller transitions reveals the halo structure of22Al
Physical Review Letters ( IF 8.385 ) Pub Date : 
J. Lee et al.

β-delayed one-proton emission of 22Si, the lightest nucleus with an isospin projection Tz=-3, was studied with a silicon array surrounded by high-purity germanium detectors. Properties of β-decay branches and the reduced transition probabilities for the transitions to the low-lying states of 22Al were determined. Comparing to the mirror β-decay of 22O, the by-far largest value of mirror asymmetry in low-lying states with δ=209(96)% is found in the transition to the first 1+ excited state. Shell model calculation with isospin-nonconserving (INC) forces including the T=1, J=2,3 interaction related to the s1/2 orbit, which introduces explicitly the isospin-symmetry breaking force and describes loosely-bound nature in the wave functions of the s1/2 orbit, can well reproduce the observed data, and consistently explain the observation that large δ value occurs only for the first, but not for the second 1+ excited state of 22Al. Our results, while supporting the proton-halo structure in 22Al, might provide another means for identification of halo nuclei.
更新日期:2020-09-14

 

全部期刊列表>>
物理学研究前沿热点精选期刊推荐
科研绘图
欢迎报名注册2020量子在线大会
化学领域亟待解决的问题
材料学研究精选新
GIANT
自然职场线上招聘会
ACS ES&T Engineering
ACS ES&T Water
屿渡论文,编辑服务
阿拉丁试剂right
张晓晨
田蕾蕾
李闯创
刘天飞
隐藏1h前已浏览文章
课题组网站
新版X-MOL期刊搜索和高级搜索功能介绍
ACS材料视界
天合科研
x-mol收录
X-MOL
清华大学
廖矿标
陈永胜
试剂库存
down
wechat
bug