Shape evolution of Kr-72,Kr-74 with temperature in covariant density functional theory

doi:10.1088/1674-1137/41/9/094102

NTSC-IR

	Shape evolution of Kr-72,Kr-74 with temperature in covariant density functional theory
	Zhang, Wei 1,2; Niu, Yi-Fei 3
	2017-09-01
发表期刊	CHINESE PHYSICS C
ISSN	1674-1137
卷号	41 期号:9 页码:11
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.
关键词	nuclear energy density functionals finite temperature shape evolution
资助者	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
DOI	10.1088/1674-1137/41/9/094102
关键词[WOS]	SELF-CONSISTENT CALCULATIONS ; FOCK-BOGOLIUBOV CALCULATIONS ; HIGHLY EXCITED NUCLEI ; FINITE-TEMPERATURE ; MONTE-CARLO ; SHELL-MODEL ; HOT NUCLEI ; COEXISTENCE ; KR-74 ; APPROXIMATION
语种	英语
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
资助者	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
WOS研究方向	Physics
WOS类目	Physics, Nuclear ; Physics, Particles & Fields
WOS记录号	WOS:000412407200012
出版者	CHINESE PHYSICAL SOC
引用统计
文献类型	期刊论文
条目标识符	http://210.72.145.45/handle/361003/11448
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.