4.5 Article

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

期刊

PHYSICAL REVIEW C
卷 105, 期 4, 页码 -

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AMER PHYSICAL SOC
DOI: 10.1103/PhysRevC.105.044316

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资金

  1. National Natural Science Foundation of China (NSFC) [11875075, 11935003]
  2. National Key R&D Program of China [2018YFA04044000]
  3. Deutsche Forschungsgemeinschaft (DFG) [CRC110, TRR110]
  4. NSFC [CRC110, 12070131001]

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The positive and negative parity bands in Br-73 have been investigated, showing enhanced interband E1 transitions mainly contributed by intrinsic single-particle electric dipole matrix elements.
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.

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