<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>β</mml:mi></mml:math>-decay spectroscopy of the proton drip-line nucleus <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>Al</mml:mi><mml:mprescripts/><mml:none/><mml:mn>22</mml:mn></mml:mmultiscripts></mml:math>
C. Wu, H. y. Wu, J. G. Li, D. W. Luo, Zihan Li, H. Hua, Xiangxiang Xu, C. J. Lin, J. Lee, L. J. Sun, Pengfei Liang, Cenxi Yuan, Y. Y. Yang, Jialin Wang, Dengmi Wang, F. F. Duan, Y. H. Lam, P. Ma, Zhihao Gao, Q. Hu, Z. Bai, J. B., J. G. Wang, F. P. Zhong, Y. Jiang, Y. Liu, D. S. Hou, R. Li, Navyashree G.R., W. H., G. Z. Shi, Gongming Yu, D. Patel, Shichao Jin, Yibai Wang, Y. C. Yu, Q. W. Zhou, Pingfei Wang, Liyuan Hu, Shijia Fan, X. Wang, H. L. Zang, P. J. Li, Qiong Zhao, L. Yang, Peiwei Wen, F. Yang, H. M. Jia, G. L. Zhang, Min Pan, X. Y. Wang, Huahuai Sun, Zhengguo Hu, M. L. Liu, R. F. Chen, W. Q. Yang, S. Q. Hou, Junxian He, Y. M. Zhao, F. R. Xu, H. Q. Zhang
Abstract
A detailed $\ensuremath{\beta}$-decay spectroscopic study of $^{22}\mathrm{Al}$ was performed at the Radioactive Ion Beam Line in Lanzhou. With the $\ensuremath{\beta}\text{\ensuremath{-}}\ensuremath{\gamma}$-particle coincidence measurement by a high-resolution DSSD particle detection array and a high efficiency $\ensuremath{\gamma}$-ray detection array, total eight excited states in $^{22}\mathrm{Mg}$ fed by Gamow-Teller transitions was newly identified. The one-proton, two-proton, and $\ensuremath{\alpha}$ decays of the IAS at 14046(5) keV in $^{22}\mathrm{Mg}$, which were partly observed in different experiments before, were identified simultaneously in the present work, providing accurate spectroscopic information about its decay. A more complete $\ensuremath{\beta}$-decay scheme of $^{22}\mathrm{Al}$ was constructed and compared to the shell-model calculations with the USD-type Hamiltonians, USDC and USDB.