The $\gamma$ - ray spectrum following thermal neutron capture in ${}_{}{}^{136}{}_{}{}^{}\mathrm{Xe}$ has been studied with a Compton-suppression spectrometer. The $Q$ value for the reaction has been measured as $Q(n,\gamma )=4025.5\mathrm{}\pm 0.3$ keV. Levels populated by primary transitions from the capture state correlate well with those populated by $l=1\mathrm{}$ transfers in the ($d,p$) and ($p,p_0$) reactions. The data indicate a strong correlation between reduced transition probabilities for the primary transitions and spectroscopic factors for final levels.

NUCLEAR REACTIONS ${}_{}{}^{136}{}_{}{}^{}\mathrm{Xe}(n_{\mathrm{th}},\gamma ){}_{}{}^{137}{}_{}{}^{}\mathrm{Xe}$; measured $E_{\gamma }$, $I_{\gamma }$; Ge(Li) Compton suppression spectrometer; deduced $Q$; ${}_{}{}^{137}{}_{}{}^{}\mathrm{Xe}$ deduced levels, $J$, $\pi$.

• Received 28 February 1977

DOI:https://doi.org/10.1103/PhysRevC.16.1001