Decay Properties of ${}^{266}$Bh and ${}^{262}$Db Produced in the ${}^{248}$Cm + ${}^{23}$Na Reaction

Abstract

Decay properties of an isotope ${}^{266}$Bh and its daughter nucleus ${}^{262}$Db produced by the ${}^{248}$Cm(${}^{23}$Na, 5\textit{n}) reaction were studied by using a gas-filled recoil separator coupled with a position-sensitive semiconductor detector. ${}^{266}$Bh was clearly identified from the correlation of the known nuclide, ${}^{262}$Db. The obtained decay properties of ${}^{266}$Bh and ${}^{262}$Db are consistent with those observed in the ${}^{278}$113 chain, which provided further confirmation of the discovery of ${}^{278}$113.

Accepted for publication in J. Phys. Soc. JPN., to be published in Vol.78 No. 6