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arXiv 1907.04584nucl-exnucl-th
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$^{101}$ In的基态和同分异构态质量及奇- $A$ In同位素的壳层演化

Masses of ground and isomeric states of $^{101}$In and configuration-dependent shell evolution in odd-$A$ indium isotopes

X. Xu, J. H. Liu, C. X. Yuan, Y. M. Xing, M. Wang, Y. H. Zhang, X. H. Zhou, Yu. A. Litvinov, K. Blaum, R. J. Chen, X. C. Chen, C. Y. Fu, B. S. Gao, J. J. He, S.… 展开作者

X. Xu, J. H. Liu, C. X. Yuan, Y. M. Xing, M. Wang, Y. H. Zhang, X. H. Zhou, Yu. A. Litvinov, K. Blaum, R. J. Chen, X. C. Chen, C. Y. Fu, B. S. Gao, J. J. He, S. Kubono, Y. H. Lam, H. F. Li, M. L. Liu, X. W. Ma, P. Shuai, M. Si, M. Z. Sun, X. L. Tu, Q. Wang, H. S. Xu, X. L. Yan, J. C. Yang, Y. J. Yuan, Q. Zeng, P. Zhang, X. Zhou, W. L. Zhan, S. Litvinov, G. Audi, S. Naimi, T. Uesaka, Y. Yamaguchi, T. Yamaguchi, A. Ozawa, B. H. Sun, K. Kaneko, Y. Sun, F. R. Xu

摘要:

我们报告的第一个精确的质量测量的$1/2^-$异构体和$9/2^+$基态的$^{101}$在。所确定的异构体激发能延续了奇数- $A$铟同位素的平滑趋势,直到紧邻$N=50$幻数。只有考虑中子组态混合,才能通过专门的壳层模型计算证实这种趋势。我们发现,对于同一同位素的不同状态,单粒子能量是不同的。首次讨论了奇$A$核中的组态相关壳层演化--Ⅱ型壳层演化。我们的研究结果将有助于单粒子中子态的进一步研究。

英文摘要:

We report first precision mass measurements of the $1/2^-$ isomeric and $9/2^+$ ground states of $^{101}$In. The determined isomeric excitation energy continues a smooth trend of odd-$A$ indium isotopes up to the immediate vicinity of $N=50$ magic number. This trend can be confirmed by dedicated shell model calculations only if the neutron configuration mixing is considered. We find that the single particle energies are different for different states of the same isotope. The presented configuration-dependent shell evolution, type II shell evolution, in odd-$A$ nuclei is discussed for the first time. Our results will facilitate future studies of single-particle neutron states.

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