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Radiations of Zr 97 and Nb 97

1950; American Institute of Physics; Volume: 79; Issue: 1 Linguagem: Inglês

10.1103/physrev.79.104

1536-6065

W.H. Burgus, J.D. Knight, R. J. Prestwood,

Electron and X-Ray Spectroscopy Techniques

The radiations of ${\mathrm{Zr}}^{97}$ and ${\mathrm{Nb}}^{97}$ have been examined by beta-ray spectrometry and coincidence counting. The 17.0-hr. ${\mathrm{Zr}}^{97}$ has been found to decay to a 60-sec. isomer of ${\mathrm{Nb}}^{97}$, the latter undergoing isomeric transition to the 75-min, ${\mathrm{Nb}}^{97}$ ground state. The disintegration energies are: ${\mathrm{Zr}}^{97}$, ${E}_{\ensuremath{\beta}}=1.91\ifmmode\pm\else\textpm\fi{}0.02$ Mev; ${\mathrm{Nb}}^{97\mathrm{m}}$, ${E}_{\ensuremath{\gamma}}=0.747\ifmmode\pm\else\textpm\fi{}0.005$ Mev; ${\mathrm{Nb}}^{97}$, ${E}_{\ensuremath{\beta}}=1.267\ifmmode\pm\else\textpm\fi{}0.02$ Mev; ${E}_{\ensuremath{\gamma}}=0.665\ifmmode\pm\else\textpm\fi{}0.005$ Mev.