Half-lives of several states in neutron-rich nuclei from spontaneous fission ofCf252

Half-lives $({T}_{1∕2})$ of several states which decay by delayed $\ensuremath{\gamma}$ transitions were determined from time-gated triple $\ensuremath{\gamma}$ coincidence method. We determined, for the first time, the half-life of $330.6+x$ state in $^{108}\mathrm{Tc}$ and the half-life of $19∕{2}^{\ensuremath{-}}$ state in $^{133}\mathrm{Te}$ based on the new level schemes. Three half-lives of $^{99}\mathrm{Zr}$, $^{134}\mathrm{Te}$, and $^{137}\mathrm{Xe}$ are consistent with the previously reported ones. These results indicate that this new method is useful for measuring the half-lives.