Decay study ofInm104,g

Abstract

The ${}_{}{}^{104}{}_{}{}^{}\mathrm{In}_{}^{\mathrm{g}}{}_{}{}^{}$ and ${}_{}{}^{104}{}_{}{}^{}\mathrm{In}_{}^{\mathrm{m}}{}_{}{}^{}$ nuclei have been produced by means of the following reactions: ${}_{}{}^{106}{}_{}{}^{}\mathrm{Cd}$(p,3n), ${}_{}{}^{92}{}_{}{}^{}\mathrm{Mo}$ ${(}^{14}$N,2n), ${}_{}{}^{92}{}_{}{}^{}\mathrm{Mo}$ ${(}^{16}$O,p3n), ${}_{}{}^{92}{}_{}{}^{}\mathrm{Mo}$ ${(}^{20}$Ne,3p5n). Their decay has been investigated after mass separation. From ${\beta }^{+}$, γ, and x direct spectra and γ-γ-T, γ-x-T, and β-γ-T coincidences, a ${}_{}{}^{104}{}_{}{}^{}\mathrm{Cd}$ level scheme has been constructed. The observation of an intense background of statistical γ rays, emitted after strong β decay to high energy levels, resolves the problems of previously published work concerning β-ray intensities, spin determinations, and $Q_{\mathrm{EC}}$ values.