Application of the High-Spin Isomer Beams to Secondary Fusion Reaction and Measurement of G-Factor

A technique for providing high-spin isomers as probes of fusion reaction and measurement of g-factor has been worked out at RIKEN. In the study of the secondary fusion reaction ¹²C(^145mSm,xn)^157-xEr, the γ rays emitted from the fusion-evaporation residue ¹⁵⁴Er have been successfully observed. The nuclear g-factor of the T_1/2 = 28 ns high-spin isomer in ¹⁴⁹Dy has been measured with the γ-ray TDPAD method.