High spin states in ^(90)Mo have been populated through the ^(59)Co (^(35)Cl,2p2n) 90Mo reaction at beam energy of 116 MeV. Level lifetimes of the positive-parity decay sequence are measured by using the Doppler shift...High spin states in ^(90)Mo have been populated through the ^(59)Co (^(35)Cl,2p2n) 90Mo reaction at beam energy of 116 MeV. Level lifetimes of the positive-parity decay sequence are measured by using the Doppler shift attenuation method. It is observed that the M1 transition strengths show a substantial enhancement at high spin. This behaviour may be related to occupation of high Ω orbitals by a pair of g9/2 protons. A deformed shape with oblate is suggested above the 13^(+) state.展开更多
基金Supported by the National Natural Science Foundation of China under Grant Nos.19675067 and 19975070.
文摘High spin states in ^(90)Mo have been populated through the ^(59)Co (^(35)Cl,2p2n) 90Mo reaction at beam energy of 116 MeV. Level lifetimes of the positive-parity decay sequence are measured by using the Doppler shift attenuation method. It is observed that the M1 transition strengths show a substantial enhancement at high spin. This behaviour may be related to occupation of high Ω orbitals by a pair of g9/2 protons. A deformed shape with oblate is suggested above the 13^(+) state.
