New determination of the astrophysical 13C( p, γ) 14N S(E) factors and reaction rates via the 13C(7Li, 6He) 14N reaction

Y. J. Li; Z. H. Li; E. T. Li; X. X. Bai; J. Su; B. Guo; B. X. Wang; S. Q. Yan; S. Zeng; Z. C. Li; J. C. Liu; X. Liu; S. J. Jin; Y. B. Wang; L. Y. Zhang; X. Q. Yu; L. Li; G. Lian; Q. W. Fan; W. P. Liu

doi:10.1140/epja/i2012-12013-x

2022 Impact factor 2.7

Hadrons and Nuclei

Open Access

This article has an erratum: [https://doi.org/10.1140/epja/i2013-13106-8]

Eur. Phys. J. A (2012) 48: 13
https://doi.org/10.1140/epja/i2012-12013-x

Regular Article - Experimental Physics

New determination of the astrophysical ¹³C( p, γ) ¹⁴N S(E) factors and reaction rates via the ¹³C(⁷Li, ⁶He) ¹⁴N reaction

Y. J. Li¹, Z. H. Li¹^*, E. T. Li¹, X. X. Bai¹, J. Su¹, B. Guo¹, B. X. Wang¹, S. Q. Yan¹, S. Zeng¹, Z. C. Li¹, J. C. Liu¹, X. Liu¹, S. J. Jin¹, Y. B. Wang¹, L. Y. Zhang², X. Q. Yu², L. Li², G. Lian¹, Q. W. Fan¹ and W. P. Liu¹

¹ China Institute of Atomic Energy (CIAE), P. O. Box 275(10), 102413, Beijing, PRC
² Institute of Modern Physics, Chinese Academy of Sciences (CAS), 730000, Lanzhou, PRC

^* e-mail: zhli@ciae.ac.cn

Received: 23 October 2011
Revised: 8 January 2012
Accepted: 23 January 2012
Published online: 9 February 2012

Abstract

The ¹³C(⁷Li, ⁶He) ¹⁴ N_0,1 reactions were measured at E (⁷Li) = 34 MeV with the Q3D magnetic spectrometer of the HI-13 tandem accelerator, and the first peaks of the angular distributions were obtained for the first time. The ¹⁴N_0,1 proton spectroscopic factors were extracted to be 0.67±0.09 and 0.73±0.10 , respectively. Using the ¹³C(p, γ) ¹⁴N direct capture S _dc(E) factors derived by the spectroscopic factors, the direct measurement data for both 1⁻ and 0⁻ resonances were well fitted via updating the resonance parameters, and then the total astrophysical ¹³C(p, γ) ¹⁴N S(E) factors and reaction rates were determined at stellar energies. The present work offers an independent examination to the existing results of the ¹³ C(p, γ) ¹⁴N reaction.