Abstract
${\mathrm{Sm}}^{155}$ was found to decay to ${\mathrm{Eu}}^{155}$ with a half-life of 21.9\ifmmode\pm\else\textpm\fi{}0.2 minutes. Internal conversion electrons corresponding to the gamma rays in ${\mathrm{Eu}}^{155}$ were observed in a magnetic spectrometer. The gamma ray spectrum was studied with a well crystal. The spectra of gamma rays coincident with the x ray, 104-kev, 142-kev, and 246-kev gamma rays were observed. A number of new, weak transitions are proposed. Directional correlation measurements were made on the 142-kev---104-kev cascade. Possible spin assignments are discussed.
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