Doublet bands at borders of A ≈ 130 island of chiral candidates: Case study of 120I

• 来源期刊: 中国物理C（英文版）
• 年，卷（期）: 2020,（7）
• 页码范围: 95-102
• 页数: 8页
• 语种: 英文
• DOI: 10.1088/1674-1137/44/7/074102

摘要

Positive-parity doublet bands were reported in 120I.Based on these,we discuss the corresponding experimental characteristics,including rotational alignment,and re-examine the corresponding configuration assignment.The self-consistent tilted axis cranking relativistic mean-field calculations indicate that the doublet bands are built on the configuration πh11/2 (×)vh-111/2.By adopting the two quasiparticles coupled with a triaxial rotor model,the excitation energies,energy staggering parameter S(I),B(M1)/B(E2),effective angles,and K plots are discussed and compared with available data.The obtained results support the interpretation of chiral doublet bands for the positive-parity doublet bands in 120I,and hence identify this nucleus as the border of the A ≈ 130 island ofchiral candidates.