<sup>107</sup>Ag磁转动带研究

¹⁰⁷Ag磁转动带研究

摘要: 本工作利用重离子熔合蒸发反应¹⁰⁰Mo(¹¹B, 4n)¹⁰⁷Ag布居了¹⁰⁷Ag核的高自旋态，¹¹B束流能量为46 MeV。扩展了¹⁰⁷Ag的能级纲图，发现了正宇称带2带内及连接跃迁部分的6个新能级以及11条新γ跃迁，确认了带2带头的自旋宇称为27/2⁺。通过对激发能、顺排量、旋称劈裂和B(M1)/B(E2)比值等自旋相关性质的分析，以及与邻近¹¹¹In的带结构对比分析，建议¹⁰⁷Ag带2为组态\pi g_9/2\otimes\nu h_11/2^2(d_5/2/g_7/2)^2的磁转动带。

Abstract: High-spin states of the ¹⁰⁷Ag nucleus were populated using the heavy-ion fusion-evaporation reaction ¹⁰⁰Mo(¹¹B, 4n)¹⁰⁷Ag, with a ¹¹B beam energy of 46 MeV. The level scheme of ¹⁰⁷Ag was extended, revealing six new levels and eleven new γ transitions associated with band 2, confirming the bandhead 27/2⁺ of band 2. Through the analysis of spin-related properties such as excitation energy, alignment, signature splitting and B(M1)/B(E2) ratios, as well as a comparative analysis with the band structure of neighboring ¹¹¹In, it is suggested that band 2 of ¹⁰⁷Ag is a magnetic rotational band with the configuration \pi g_9/2\otimes\nu h_11/2^2(d_5/2/g_7/2)^2.