학술논문
Two measurements of the 22Na+p resonant scattering via thick-target inverse-kinematics method
Document Type
article
Author
Wang Y.B.; Jin S.J.; Jing L.; Han Z.Y.; Bai X.X.; Guo B.; Li Y.J.; Li Z.H.; Lian G.; Su J.; Sun L.J.; Yan S.Q.; Zeng S.; Liu W.P.; Yamaguchi H.; Kubono S.; Hu J.; Kahl D.; He J.J; Wang J.S.; Tang X.D.; Xu S.W.; Ma P.; Zhang N.T.; Bai Z.; Huang M.R.; Jia B.L.; Jin S.L.; Ma J.B.; Ma S.B.; Ma W.H.; Yang Y.Y.; Zhang L.Y.; Jung H.S.; Moon J.Y.; Lee C.S.; Teranishi T.; Wang H.W.; Ishiyama H.; Iwasa N.; Komatsubara T.; Brown B.A.
Source
EPJ Web of Conferences, Vol 109, p 04010 (2016)
Subject
Language
English
ISSN
2100-014X
Abstract
22Na is an important isotope for the study of extinct radioactivity, meanwhile its sufficiently long half life provides the possibility to observe live 22Na in nearby nova explosions. The 22Na(p,γ) 23Mg is one of the key reactions that influence the 22Na abundance in nova ejecta. To study the proton resonant states in 23Mg relevant to the astrophysical 22Na(p,γ) 23Mg reaction rates, two measurements have been carried out at the CRIB separator of University of Tokyo, and the RIBLL secondary beamline in Lanzhou, respectively. The 22Na secondary beam was produced via the 1H(22Ne, 22Na)n charge exchange reaction. Thick-target inverse-kinematics method is applied to obtain the excitation function of 22Na+p elastic scattering. Extended gas target and solid state polyethylene foil were used in the two measurements, respectively, to map the different excitation energy region of the compound nucleus 23Mg. Several new resonant levels are observed and their contribution to the 22Na(p,γ) 23Mg reaction rate is evaluated.