Si26(p,γ)P27 direct proton capture by means of the asymptotic normalization coefficients method for mirror nuclei

G. D'Agata, A. I. Kilic, V. Burjan, J. Mrazek, V. Glagolev, V. Kroha, G. L. Guardo, M. La Cognata, L. Lamia, S. Palmerini, R. G. Pizzone, G. G. Rapisarda, S. Romano, M. L. Sergi, R. Spartà, C. Spitaleri, I. Siváček, and A. Tumino
Phys. Rev. C 103, 015806 – Published 25 January 2021

Abstract

The Si26(p,γ)P27 reaction might be relevant in understanding the Si26 depletion and Al26 production in stars. The asymptotic normalization coefficients (ANC) for the Si26(p,γ)P27 reaction were extracted earlier from the reanalysis of Mg26(d,p)Mg27 and Mg26(t,d)Mg27 reactions, in which the deduced ANC's show significant discrepancies. In this work, a dedicated (d,p) measurement is presented: the ANC for the Mg27Mg26+n virtual decay is deduced from the Mg26(d,p)Mg27 reaction populating the ground and the first excited state of Mg27 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 Si26+pP27 populating the ground state of P27. By means of the same formalism, the Γp width for the first excited state has also been deduced. The reaction rate is also updated using recent values for the Γγ/Γp ratio measured by [Sun et al., Phys. Rev. C 99, 064312 (2019); Sun et al., Phys. Lett. B 802, 135213 (2020)].

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  • Received 20 October 2020
  • Revised 11 December 2020
  • Accepted 12 January 2021

DOI:https://doi.org/10.1103/PhysRevC.103.015806

©2021 American Physical Society

Physics Subject Headings (PhySH)

Nuclear Physics

Authors & Affiliations

G. D'Agata1,*, A. I. Kilic1, V. Burjan1, J. Mrazek1, V. Glagolev1, V. Kroha1, G. L. Guardo2, M. La Cognata2, L. Lamia2,3,4, S. Palmerini5,6, R. G. Pizzone2, G. G. Rapisarda2, S. Romano2,3,4, M. L. Sergi2,3, R. Spartà2,3, C. Spitaleri2, I. Siváček1,7, and A. Tumino2,8

  • 1Nuclear Physics Institute of the Czech Academy of Sciences, 250 68 Řež, Czech Republic
  • 2INFN - Laboratori Nazionali del Sud, Via Santa Sofia 62, 95123, Catania, Italy
  • 3Dipartimento di Fisica e Astronomia “E. Majorana”, Università degli Studi di Catania, Via Santa Sofia 64, 95123, Catania, Italy
  • 4Centro Siciliano di Fisica Nucleare e Struttura della Materia (CSFNSM), Catania 77843, Italy
  • 5Dipartimento di Fisica e Geologia, Università degli Studi di Perugia, via A. Pascoli s/n, 06123, Perugia, Italy
  • 6INFN-sezione di Perugia, via A. Pascoli s/n, 06123, Perugia, Italy
  • 7Flerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research, 141980 Dubna, Russia
  • 8Facoltà di Ingegneria ed Architettura, Kore University, Viale delle Olimpiadi, 1, I-94100 Enna, Italy

  • *dagata@ujf.cas.cz

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Vol. 103, Iss. 1 — January 2021

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