Measurement of the Pb 208 ( Cr 52 , n ) Sg 259 excitation function

The excitation function for the $^{208}\mathrm{Pb}(^{52}\mathrm{Cr},n)^{259}\mathrm{Sg}$ reaction has been measured using the Berkeley Gas-filled Separator at the Lawrence Berkeley National Laboratory 88-Inch Cyclotron. The maximum cross section of ${320}_{\ensuremath{-}100}^{+110}$ pb is observed at a center-of-target laboratory-frame energy of 253.0 MeV. In total, 25 decay chains originating from $^{259}\mathrm{Sg}$ were observed and the measured decay properties are in good agreement with previous reports. In addition, a partial excitation function for the $^{208}\mathrm{Pb}(^{52}\mathrm{Cr},2n)^{258}\mathrm{Sg}$ reaction was obtained, and an improved $^{258}\mathrm{Sg}$ half-life of ${2.6}_{\ensuremath{-}0.4}^{+0.6}$ ms was calculated by combining all available experimental data.