Interpretation of enhanced electric dipole transitions in 73Br by the reflection-asymmetric triaxial particle rotor model

作者：Wang, Y. Y.; Chen, Q. B.; Zhang, S. Q.^*

来源：Physical Review C - Nuclear Physics, 2022, 105(4): 044316.

DOI：10.1103/PhysRevC.105.044316

• NUCLEI
• EXCITATIONS
• STATES
• HEAVY
• BANDS
• ODD

The recently observed positive and negative parity bands in Br-73 are investigated by the reflection-asymmetric triaxial particle rotor model. The experimental energy spectra as well as the electric transition probabilities B(E1), B(E2), and the ratio B(E1)/B(E2) are well reproduced by the theoretical calculations. It is found that the enhanced interband E1 transitions between the opposite-parity bands, a crucial evidence for octupole correlations, are mainly contributed by the intrinsic single-particle electric dipole matrix elements.

• 单位
  北京大学