Decay ofSn11350(112 days) andIn113m49(1.73 hr)
Physical Review1959Vol. 115(1), pp. 188–191
Abstract
Samples of $_{50}\mathrm{Sn}^{113}$(112 days) were produced by neutron irradiation of tin enriched in ${\mathrm{Sn}}^{112}$. The gamma rays were studied by scintillation methods using the Argonne 256-channel analyzer; the internal-conversion electrons were investigated by means of a 180\ifmmode^\circ\else\textdegree\fi{} $\ensuremath{\beta}$-ray spectrometer. In addition to the well-established 393-kev gamma ray, a gamma ray of 255 kev was found. Studies of all the tin radioisotopes showed the latter to be in the ${\mathrm{Sn}}^{113}$ activity. Energy levels in ${\mathrm{In}}^{113}$ at 393 and 648 kev, the latter having spin \textonehalf{} or $\frac{3}{2}$, are indicated.
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