First direct measurement of C-12(C-12,n)Mg-23 at stellar energies

doi:10.1051/epjconf/201610904009

	First direct measurement of C-12(C-12,n)Mg-23 at stellar energies
	Pignatari, M.7,8; Tang, X. D.10; Bucher, B.1,2; Fang, X.1; Heger, A.3,4,5; Almaraz-Calderon, S.1; Alongi, A.1; Ayangeakaa, A. D.1; Beard, M.1; Best, A.1
	2016
卷号	109
DOI	10.1051/epjconf/201610904009
英文摘要	Neutrons produced by the carbon fusion reaction C-12(C-12,n)Mg-23 play an important role in stellar nucleosynthesis. Past studies have shown large discrepancies between experimental data and theory, leading to an uncertain cross section extrapolation at astrophysical energies. We present the first direct measurement which extends deep into the astrophysical energy range along with a new and improved extrapolation technique based on experimental data from the mirror reaction C-12(C-12,p)Na-23. The new reaction rate has been determined with a well-defined uncertainty which exceeds the precision required by astrophysics models. Using our constrained rate, we find that C-12(C-12,n)Mg-23 is crucial to the production of Na and Al in Pop-III Pair Instability Supernovae.
会议录	13TH INTERNATIONAL SYMPOSIUM ON ORIGIN OF MATTER AND EVOLUTION OF GALAXIES (OMEG2015)
会议录出版者	E D P SCIENCES
会议录出版地	17 AVE DU HOGGAR PARC D ACTIVITES COUTABOEUF BP 112, F-91944 CEDEX A, FRANCE
语种	英语
WOS研究方向	Astronomy & Astrophysics
WOS记录号	WOS:000372789800013
内容类型	会议论文
源URL	[http://119.78.100.186/handle/113462/58351]
专题	中国科学院近代物理研究所
通讯作者	Tang, X. D.; Bucher, B.
作者单位	1.Univ Notre Dame, Joint Inst Nucl Astrophys, Inst Struct & Nucl Astrophys, Notre Dame, IN 46556 USA 2.Lawrence Livermore Natl Lab, Livermore, CA 94550 USA 3.Monash Univ, Sch Phys & Astron, Monash Ctr Astrophys, Clayton, Vic 3800, Australia 4.Shanghai Jiao Tong Univ, Ctr Nucl Astrophys, Dept Phys & Astron, Shanghai 200240, Peoples R China 5.Univ Minnesota, Sch Phys & Astron, Minneapolis, MN 55455 USA 6.China Inst Atom Energy, Beijing 102413, Peoples R China 7.Hungarian Acad Sci, Res Ctr Astron & Earth Sci, Konkoly Observ, Konkoly Thege Miklosut 15-17, H-1121 Budapest, Hungary 8.Univ Basel, Dept Phys, CH-4056 Basel, Switzerland 9.Univ Calif Santa Cruz, Dept Astron & Astrophys, Santa Cruz, CA 95064 USA 10.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Pignatari, M.,Tang, X. D.,Bucher, B.,et al. First direct measurement of C-12(C-12,n)Mg-23 at stellar energies[C]. 见:.