High-spin studies of 172,173Os: Complex alignment mechanism.
High-spin studies of 172,173Os: Complex alignment mechanism.
复制标题
DOI：
10.1103/physrevc.40.725
复制
发表时间：
1989-08
期刊：
影响因子：
--
通讯作者：
Wells;Johnson;Baktash;Lee;Mcgowan;Riley;Virtanen;Dudek
中科院分区：
文献类型：
--
作者：
Wells;Johnson;Baktash;Lee;Mcgowan;Riley;Virtanen;Dudek
{sup 172}Os 的高自旋态已通过 {gamma}-{gamma} 符合研究进行了研究。这些态由使用 162-MeV {sup 32}S 离子的 {sup 144}Nd({sup 32}S,4{ital n}) 反应填充。伽马-伽马符合测量是用康普顿抑制光谱仪系统进行的。在 30{sup +} 态上观察到 yrast 带，并从 {gamma}-{gamma} 重合关系推导出四个边带。还观察到一条被鉴定为属于 {sup 173}Os 的带。使用平均核场计算解释结果，该计算结合了变形的伍兹-撒克逊势及其通用参数化、曲柄近似和 Hartree-Fock-Bogoliubov 方法。计算表明存在 0.2{lt}{h bar}{omega}{lt}0.3 的强相互作用准粒子带交叉，与实验结果半定量一致。讨论了准粒子能带结构和中子配对的衰落。
High-spin states of {sup 172}Os have been investigated by {gamma}-{gamma} coincidence studies. These states were populated by the {sup 144}Nd({sup 32}S,4{ital n}) reaction using 162-MeV {sup 32}S ions. Gamma-gamma coincidence measurements were made with a Compton-suppression spectrometer system. The yrast band was observed up through the 30{sup +} state, and four sidebands were deduced from {gamma}-{gamma} coincidence relationships. A band identified as belonging to {sup 173}Os was also observed. Results were interpreted using average nuclear field calculations which incorporated the deformed Woods-Saxon potential with its universal'' parametrization, a cranking approximation, and the Hartree-Fock-Bogoliubov method. The calculations indicate the presence of strongly interacting quasiparticle band crossings for 0.2{lt}{h bar}{omega}{lt}0.3, in semiquantitative agreement with experiment. Both the quasiparticle band structures and decline of neutron pairing are discussed.