Astromers: Nuclear Isomers in Astrophysics*

doi:10.3847/1538-4365/abc41d

	Astromers: Nuclear Isomers in Astrophysics*
	Misch, G. Wendell 1,2,3,4; Ghorui, Surja K.4,5; Banerjee, Projjwal 6; Sun, Yang 4,7,8; Mumpower, Matthew R.1,2,3
刊名	ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
	2021
卷号	252 期号:1 页码:17
关键词	Nucleosynthesis Stellar nucleosynthesis S-process R-process
ISSN号	0067-0049
DOI	10.3847/1538-4365/abc41d
通讯作者	Misch, G. Wendell(wendell@lanl.gov)
英文摘要	We develop a method to compute thermally mediated transition rates between the ground state and long-lived isomers in nuclei. We also establish criteria delimiting a thermalization temperature above which a nucleus may be considered a single species and below which it must be treated as two separate species: a ground-state species and an astrophysical isomer ("astromer") species. Below the thermalization temperature, the destruction rates dominate the internal transition rates between the ground state and the isomer. If the destruction rates also differ greatly from one another, the nuclear levels fall out of or fail to reach thermal equilibrium. Without thermal equilibrium, there may not be a safe assumption about the distribution of occupation probability among the nuclear levels when computing nuclear reaction rates. In these conditions, the isomer has astrophysical consequences and should be treated as a separate astromer species which evolves separately from the ground state in a nucleosynthesis network. We apply our transition-rate methods and perform sensitivity studies on a few well-known astromers. We also study transitions in several other isomers of likely astrophysical interest.
资助项目	US Department of Energy through the Los Alamos National Laboratory ; National Nuclear Security Administration of the US Department of Energy[89233218CNA000001] ; Laboratory Directed Research and Development program of Los Alamos National Laboratory[20190021DR] ; National Natural Science Foundation of China[U1932206] ; National Key Program for S&T Research and Development[2016YFA0400501]
WOS关键词	DATA SHEETS ; RATE TABLES ; WEAK PROCESSES ; SHELL NUCLEI ; RATES ; AL-26 ; MASS
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000599781500001
资助机构	US Department of Energy through the Los Alamos National Laboratory ; National Nuclear Security Administration of the US Department of Energy ; Laboratory Directed Research and Development program of Los Alamos National Laboratory ; National Natural Science Foundation of China ; National Key Program for S&T Research and Development
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/138411]
专题	中国科学院近代物理研究所
通讯作者	Misch, G. Wendell
作者单位	1.Joint Inst Nucl Astrophys Ctr Evolut Elements, Notre Dame, IN 46556 USA 2.Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA 3.Los Alamos Natl Lab, Ctr Theoret Astrophys, Los Alamos, NM 87545 USA 4.Shanghai Jiao Tong Univ, Sch Phys & Astron, Dept Phys, Shanghai 200240, Peoples R China 5.Chinese Acad Sci, Inst Modern Phys, Quark Matter Res Ctr, Lanzhou 730000, Peoples R China 6.Indian Inst Technol Palakkad, Discipline Phys, Palakkad 678557, Kerala, India 7.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China 8.China Inst Atom Energy, POB 275 10, Beijing 102413, Peoples R China
推荐引用方式 GB/T 7714	Misch, G. Wendell,Ghorui, Surja K.,Banerjee, Projjwal,et al. Astromers: Nuclear Isomers in Astrophysics*[J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,2021,252(1):17.
APA	Misch, G. Wendell,Ghorui, Surja K.,Banerjee, Projjwal,Sun, Yang,&Mumpower, Matthew R..(2021).Astromers: Nuclear Isomers in Astrophysics*.ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,252(1),17.
MLA	Misch, G. Wendell,et al."Astromers: Nuclear Isomers in Astrophysics*".ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES 252.1(2021):17.