Shape evolution of Kr-72,Kr-74 with temperature in covariant density functional theory
文献类型：期刊论文
| 作者 | Zhang, Wei1,2; Niu, Yi-Fei3 |
| 刊名 | CHINESE PHYSICS C
 |
| 出版日期 | 2017-09-01 |
| 卷号 | 41期号:9页码:11 |
| ISSN号 | 1674-1137 |
| 关键词 | nuclear energy density functionals finite temperature shape evolution |
| DOI | 10.1088/1674-1137/41/9/094102 |
| 英文摘要 | The rich phenomena of deformations in neutron-deficient krypton isotopes, such as shape evolution with neutron number and shape coexistence, have attracted the interest of nuclear physicists for decades. It is interesting to study such shape phenomena using a novel way, e.g. by thermally exciting the nucleus. In this work, we develop the finite temperature covariant density functional theory for axially deformed nuclei with the treatment of pairing correlations by the BCS approach, and apply this approach for the study of shape evolution in Kr-72,Kr-74 with increasing temperature. For Kr-72, with temperature increasing, the nucleus firstly experiences a relatively quick weakening in oblate deformation at temperature T similar to 0.9 MeV, and then changes from oblate to spherical at T similar to 2.1 MeV. For Kr-74, its global minimum is at quadrupole deformation beta(2) similar to -0.14 and abruptly changes to spherical at T similar to 1.7 MeV. The proton pairing transition occurs at critical temperature 0.6 MeV following the rule T-c=0.6 Delta(p) (0), where Delta(p) (0) is the proton pairing gap at zero temperature. The signatures of the above pairing transition and shape changes can be found in the specific heat curve. The single-particle level evolutions with temperature are presented. |
| WOS关键词 | SELF-CONSISTENT CALCULATIONS ; FOCK-BOGOLIUBOV CALCULATIONS ; HIGHLY EXCITED NUCLEI ; FINITE-TEMPERATURE ; MONTE-CARLO ; SHELL-MODEL ; HOT NUCLEI ; COEXISTENCE ; KR-74 ; APPROXIMATION |
| 资助项目 | National Natural Science Foundation of China[11105042] ; National Natural Science Foundation of China[11305161] ; National Natural Science Foundation of China[11505157] ; Open Fund of Key Laboratory of Time and Frequency Primary Standards, CAS ; Henan Administration of Foreign Experts Affairs |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| 出版者 | CHINESE PHYSICAL SOC |
| WOS记录号 | WOS:000412407200012 |
| 资助机构 | National Natural Science Foundation of China ; National Natural Science Foundation of China ; Open Fund of Key Laboratory of Time and Frequency Primary Standards, CAS ; Open Fund of Key Laboratory of Time and Frequency Primary Standards, CAS ; Henan Administration of Foreign Experts Affairs ; Henan Administration of Foreign Experts Affairs ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Open Fund of Key Laboratory of Time and Frequency Primary Standards, CAS ; Open Fund of Key Laboratory of Time and Frequency Primary Standards, CAS ; Henan Administration of Foreign Experts Affairs ; Henan Administration of Foreign Experts Affairs ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Open Fund of Key Laboratory of Time and Frequency Primary Standards, CAS ; Open Fund of Key Laboratory of Time and Frequency Primary Standards, CAS ; Henan Administration of Foreign Experts Affairs ; Henan Administration of Foreign Experts Affairs ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Open Fund of Key Laboratory of Time and Frequency Primary Standards, CAS ; Open Fund of Key Laboratory of Time and Frequency Primary Standards, CAS ; Henan Administration of Foreign Experts Affairs ; Henan Administration of Foreign Experts Affairs |
| 源URL | [http://210.72.145.45/handle/361003/11447]  |
| 专题 | 中国科学院国家授时中心 |
| 通讯作者 | Niu, Yi-Fei |
| 作者单位 | 1.Zhengzhou Univ, Henan Key Lab Ion Beam Bioengn, Zhengzhou 450052, Henan, Peoples R China 2.Chinese Acad Sci, Natl Time Serv Ctr, Key Lab Precis Nav & Technol, Xian 710600, Shaanxi, Peoples R China 3.Horia Hulubei Natl Inst Phys & Nucl Engn, ELI NP, 30 Reactorului St, RO-077125 Bucharest, Romania |
| 推荐引用方式 GB/T 7714 | Zhang, Wei,Niu, Yi-Fei. Shape evolution of Kr-72,Kr-74 with temperature in covariant density functional theory[J]. CHINESE PHYSICS C,2017,41(9):11. |
| APA | Zhang, Wei,&Niu, Yi-Fei.(2017).Shape evolution of Kr-72,Kr-74 with temperature in covariant density functional theory.CHINESE PHYSICS C,41(9),11. |
| MLA | Zhang, Wei,et al."Shape evolution of Kr-72,Kr-74 with temperature in covariant density functional theory".CHINESE PHYSICS C 41.9(2017):11. |
入库方式： OAI收割
来源：国家授时中心
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