Measurement of ${\hat{I}}^2$-decay end point energy with Planar HPGe detector

Abstract

The end point energies of nuclear ${\hat{I}}^2$ decays have been measured with a segmented planar Ge LEPS detector using both singles and coincidence techniques. The ${\hat{I}}^2-{\hat{I}}^3$ coincidence has been performed with a segmented planar Ge LEPS and a single 10$\%$ HPGe detector. The ${\hat{I}}^3$ ray and ${\hat{I}}^2$ particle responses of the Segmented planer Ge LEPS detector were studied using monte carlo simulation code GEANT3. The experimentally obtained ${\hat{I}}^2$ spectrum was in reasonably good agreement with the simulation results. The experimental end point energies are determined with substantial accuracy for some of the known ${\hat{I}}^2$ decays in ${}^{106}$Rh, ${}^{210}$Bi and ${}^{90}$Y. The end point energies corresponding to three weak branches in ${}^{106}$Rh $\to$ ${}^{106}$Pd decay has been measured for the first time.

12 pages, 8 figures and 1 table