Isobaric TripletCr48-V48-Ti48

Abstract

${\mathrm{Cr}}^{48}$ has been produced by the nuclear reaction ${\mathrm{Ti}}^{46}(\ensuremath{\alpha}, 2n){\mathrm{Cr}}^{48}$. The gamma spectra of this nuclide have been investigated and peaks fround at 118 kev and 307 kev. The two gamma rays are in coincidence and have the same intensity. The gamma rays of the daughter nuclide ${\mathrm{V}}^{48}$ have been shown to appear in the gamma spectra as ${\mathrm{Cr}}^{48}$ decays. The half-life of ${\mathrm{Cr}}^{48}$ has been determined as 24\ifmmode\pm\else\textpm\fi{}1 hours. The energy of the ${\mathrm{Cr}}^{48}$ orbital electron capture has been shown to be approximately 1.30 Mev with a very low $log\mathrm{ft}$ value. A decay scheme for the isobaric triplet ${\mathrm{Cr}}^{48}$-${\mathrm{V}}^{48}$-${\mathrm{Ti}}^{48}$ is proposed. Using the proposed decay schemes as a basis, the masses of ${\mathrm{Cr}}^{48}$ and ${\mathrm{V}}^{48}$ have been calculated to be 47.96934\ifmmode\pm\else\textpm\fi{}22 and 47.96749\ifmmode\pm\else\textpm\fi{}7, respectively.