Low- and medium-spin negative-parity bands of ${}^{187}\mathrm{Os}$ have been studied using the AFRican Omnipurpose Detector for Innovative Techniques and Experiments (AFRODITE) array, following the ${}^{186}\mathrm{W}({}^4\mathrm{He},3n){}^{187}\mathrm{Os}$ reaction at a beam energy of 37 MeV. In the current work, all the previously known bands have been significantly extended and three new bands have been added to the level scheme. The angular distribution ratio ($R_{\mathrm{AD}}$) and polarization measurements have been used to assign spin and parity to the observed new levels. The configurations of some of the bands have been modified. The observed bands are interpreted within the cranked shell model (CSM) and cranked Nilsson-Strutinsky-Bogoliubov (CNSB) formalism. Comparison with experimental data shows good agreements. Systematic comparison with the neighboring ${}^{185}\mathrm{Os}$ isotope is also discussed.

中文翻译：

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Os187核中的中低自旋负校验带

的低和中旋转负奇偶校验带 ${}^{187}\mathrm{操作系统}$ 已使用AFRican创新技术和实验多功能检测器（AFRODITE）阵列进行了研究， ${}^{186}\mathrm{w\; ^}（{}^4他，3ñ）{}^{187}\mathrm{操作系统}$在37 MeV的束能量下发生反应。在当前的工作中，所有以前已知的频段都已得到显着扩展，并且三个新频段已添加到级别方案中。角分布比（${\mathrm{[R}}_{\mathrm{广告}}$）和极化测量已用于将自旋和奇偶校验分配给观察到的新电平。一些频带的配置已被修改。在曲柄壳模型（CSM）和曲柄Nilsson-Strutinsky-Bogoliubov（CNSB）形式主义中解释了观察到的谱带。与实验数据的比较显示出良好的一致性。与邻国的系统比较${}^{185}\mathrm{操作系统}$ 还讨论了同位素。