Si-26(p, gamma) P-27 direct proton capture by means of the asymptotic normalization coefficients method for mirror nuclei

D'Agata G., Kilic A. İ., Burjan V., Mrazek J., Glagolev V., Kroha V., ...More

PHYSICAL REVIEW C, vol.103, no.1, 2021 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 103 Issue: 1
  • Publication Date: 2021
  • Doi Number: 10.1103/physrevc.103.015806
  • Journal Name: PHYSICAL REVIEW C
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Chemical Abstracts Core, INSPEC
  • Eskisehir Osmangazi University Affiliated: No

Abstract

The Si-26(p, gamma) P-27 reaction might be relevant in understanding the Si-26 depletion and Al-26 production in stars. The asymptotic normalization coefficients (ANC) for the Si-26(p, gamma) P-27 reaction were extracted earlier from the reanalysis of Mg-26(d, p)Mg-27 and Mg-26(t, d)Mg-27 reactions, in which the deduced ANC's show significant discrepancies. In this work, a dedicated (d, p) measurement is presented: the ANC for the Mg-27 -> Mg-2(6) + n virtual decay is deduced from the Mg-26(d, p)Mg-27 reaction populating the ground and the first excited state of Mg-27 using the distorted wave Born approximation (DWBA). The charge symmetry properties for mirror nuclei have been used to calculate the ANC for the direct capture Si-26 + p -> P-27 populating the ground state of P-27. By means of the same formalism, the Gamma(p) width for the first excited state has also been deduced. The reaction rate is also updated using recent values for the Gamma(gamma)/Gamma(p) ratio measured by [Sun et al., Phys. Rev. C 99, 064312 (2019); Sun et al., Phys. Lett. B 802, 135213 (2020)].