High-spin structure in K-40

作者：Soderstrom P A^*; Recchia F; Nyberg J; Gadea A; Lenzi S M; Poves A; Atac A; Aydin S; Bazzacco D; Bednarczyk P; Bellato M; Birkenbach B; Bortolato D; Boston A J; Boston H C; Bruyneel B; Bucurescu D; Calore E; Cederwall B; Charles L; Chavas J; Colosimo S; Crespi F C L; Cullen D M; de Angelis G; Desesquelles P; Dosme N; Duchene G; Eberth J; Farnea E; Filmer F; Gorgen A; Gottardo A; Grebosz J; Gulmini M; Hess H

来源：Physical Review C, 2012, 86(5): 054320.

DOI：10.1103/PhysRevC.86.054320

High-spin states of K-40 have been populated in the fusion-evaporation reaction C-12(Si-30,np)K-40 and studied by means of gamma-ray spectroscopy techniques using one triple-cluster detector of the Advanced Gamma Tracking Array at the Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro. Several states with excitation energy up to 8 MeV and spin up to 10(-) have been discovered. These states are discussed in terms of J = 3 and T = 0 neutron-proton hole pairs. Shell-model calculations in a large model space have shown good agreement with the experimental data for most of the energy levels. The evolution of the structure of this nucleus is here studied as a function of excitation energy and angular momentum.

• 出版日期2012-11-27
• 单位中国地震局