Element 106

Abstract

We have produced element 106 by bombarding $^{249}\mathrm{Cf}$ with $^{18}\mathrm{O}$ ions accelerated by the SuperHILAC. The new nuclide $^{263}106$, produced by the ($^{18}\mathrm{O}$, $4n$) reaction, is shown to decay by $\ensuremath{\alpha}$ emission with a half-life of 0.9\ifmmode\pm\else\textpm\fi{}0.2 sec and a principal $\ensuremath{\alpha}$ energy of 9.06\ifmmode\pm\else\textpm\fi{}0.04 MeV to the known nuclide $^{259}\mathrm{Rf}$, which in turn is shown to decay to the known nuclide $^{255}\mathrm{No}$.