R-matrix analyses for the Li7(t,n)Be9 and Li7(He3,p)Be9 reactions and their improved thermonuclear reaction rates

J. Hu, N. Tian, Y. Y. Li, S. Q. Hou, S. W. Xu, J. B. Liu, and J. F. Lv
Phys. Rev. C 106, 045802 – Published 7 October 2022

Abstract

R-matrix analyses have been performed for the Li7(t,n)Be9 and Li7(He3,p)Be9 reactions, which are thought to be of importance in primordial abundance of Be9. All available data were compiled and used in the R-matrix analysis. The resonance parameters are compared with previous works. The resulting fit was used to extract an improved determination of the reaction rate for both reactions. The present rates of Li7(t,n0)Be9 at T=0.33 GK are about 7.5–28.9% lower than the values of Brune et al. and are larger than the rates of Barhoumi et al. by up to 28.1%. Our Li7(He3,p0)Be9 rates are higher than those of Yan et al. by no more than 29% and differ within 21% from those of Rath et al. over 0.1–3.0 GK.

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  • Received 21 June 2022
  • Revised 8 September 2022
  • Accepted 20 September 2022

DOI:https://doi.org/10.1103/PhysRevC.106.045802

©2022 American Physical Society

Physics Subject Headings (PhySH)

Nuclear Physics

Authors & Affiliations

J. Hu1,3,*, N. Tian1,2,3, Y. Y. Li1,3, S. Q. Hou1,3, S. W. Xu1,3, J. B. Liu1,3, and J. F. Lv2

  • 1Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
  • 2School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China
  • 3School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China

  • *hujunbaggio@impcas.ac.cn

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Vol. 106, Iss. 4 — October 2022

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