Identification and decay ofZr84

The helium-jet recoil transfer technique has been used to study the decay of ${}_{}{}^{84}{}_{}{}^{}\mathrm{Zr}$ produced by the ${}_{}{}^{58}{}_{}{}^{}\mathrm{Ni}({}_{}{}^{28}{}_{}{}^{}\mathrm{Si}, 2p)$ reaction. Isotopic identification was based on excitation functions, $x-y$ coincidences as well as genetic relationships. The half-life of ${}_{}{}^{84}{}_{}{}^{}\mathrm{Zr}$ was found to be 27.6±0.9 min. Previously reported half-lives of ${}_{}{}^{84}{}_{}{}^{}\mathrm{Zr}$ varied from 3.7 to 16 min.