| Title | High spin spectroscopy and shape coexistence in As-73 |
| Authors | Raju, M. Kumar Rao, P. V. Madhusudhana Tandel, S. K. Sugathan, P. Singh, R. P. Muralithar, S. Reddy, T. Seshi Rao, B. V. Thirumala Meng, Jie Zhang, Shuangquan Li, Jian Chen, Q. B. Qi, Bin Bhowmik, R. K. |
| Affiliation | Andhra Univ, Dept Nucl Phys, Visakhapatnam 530003, Andhra Pradesh, India. Univ Western Cape, Dept Phys, ZA-7535 Bellville, South Africa. UM DAE Ctr Excellence Basic Sci, Mumbai 400098, Maharashtra, India. Inter Univ Accelerator Ctr, New Delhi 110067, India. Peking Univ, Sch Phys, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China. Shandong Univ, Sch Space Sci & Phys, Weihai 264209, Peoples R China. |
| Keywords | POSITIVE-PARITY STATES NUCLEAR-SCIENCE-CENTER LIFETIME MEASUREMENTS ROTOR MODEL BAND SE-74 KR-76 ARRAY EVEN |
| Issue Date | 2015 |
| Publisher | PHYSICAL REVIEW C |
| Citation | PHYSICAL REVIEW C.2015,92,(6). |
| Abstract | High spin states in As-73 have been investigated through the fusion-evaporation reaction Ni-64(C-12, p2n)As-73 with an incident beam energy of 55 MeV. The level scheme has been extended up to J(pi) = (37/2(-)) and excitation energy similar to 8.7 MeV with the addition of 30 new gamma-ray transitions. The microscopic origins of the observed positive- and negative-parity band structures are discussed in the context of the particle rotor model. Nucleon alignments and shape evolution with increasing angular momentum are discussed in the framework of the cranked shell model and relativistic mean-field calculations. The results offer insight into the nature of the observed band structures and indicate prolate-oblate shape coexistence between positive- and negative-parity bands at low spin. |
| URI | http://hdl.handle.net/20.500.11897/439042 |
| ISSN | 0556-2813 |
| DOI | 10.1103/PhysRevC.92.064324 |
| Indexed | SCI(E) |
| Appears in Collections: | 物理学院 核物理与核技术国家重点实验室 |
