The low-lying states of ^117,118Sn have been studied from the decay of ${}^{117g,118m}$Sb, and ${}^{117m}$Sn. These long-lived species were populated through the reaction ⁴He + ${}^{nat}$In at ${\text{E}}_{lab}$ = 32 MeV. Singles, as well as γ-γ coincidence data, were acquired. The uncertainties in the placement of some of the γ-rays in the excitation spectra of ¹¹⁸Sn observed by previous workers have been removed. A γ-ray (984 keV) previously assigned to ¹¹⁸Sn has been eliminated from the level scheme, based on the present analysis. The decay half-lives of ${}^{117g,118m}$Sb have been remeasured. The slope method and deconvolution technique have been used to determine the half-lives of a few isomeric states in ^117,118Sn. The results are interpreted in the framework of large scale shell model calculations performed in the 50 - 82 valence shell using truncations. Although the excitation energies were not reproduced well, the theoretical calculations could reasonably reproduce the isomers' transition probabilities due to their nearly pure configuration.

¹¹⁷¹¹⁸ Sn的低洼状态已根据${}^{117G，118米}$锑和 ${}^{117米}$锡 这些长寿物种通过反应⁴ He +${}^{ñ\mathrm{一种}Ť}$在 ${\text{Ë}}_{升\mathrm{一种}b}$= 32 MeV。获得了单打以及γ - γ符合数据。消除了先前工作人员观察到的¹¹⁸ Sn激发光谱中某些γ射线位置的不确定性。根据目前的分析，已经从物位方案中消除了先前分配给¹¹⁸ Sn的γ射线（984 keV）。的衰变半衰期${}^{117G，118米}$锑已重新测量。斜率法和反卷积技术已被用于确定^117,118 Sn中一些异构态的半衰期。在截短的50-82价壳中执行的大规模壳模型计算的框架中解释了结果。尽管激发能不能很好地再现，但是由于其几乎纯的构型，理论计算可以合理地再现异构体的跃迁概率。