摘要
Lifetimes of the 2_(1)^(+),4_(1)^(+),7_(2)^(-),10_(2)^(+),12_(2)^(+),and 14_(1)^(+) states in 138 Nd populated via the 123 Sb(19 F,4n)138 Nd fusion–evaporation reaction were measured with the recoil distance Doppler shift technique in combination with the differential decay curve method.The B(E2;2_(1)^(+)→0_(1)^(+))value fit well with the systematic trend in the Nd isotope chain and Grodzins rule,which proved that 138Nd is a transitional nucleus.
基金
This work was supported by the National Natural Science Foundation of China(Nos.U1932209,11975315,U1867210,and 11905134)
the Leading Innovation Project(Nos.LC192209000701 and LC202309000201)
the Continuous Basic Scientific Research Project(Nos.BJ20002501 and WDJC-2019-13)
the China National Nuclear Corporation(No.FA18000201).
