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

0540715 - ÚJF 2022 RIV US eng J - Článek v odborném periodiku
D'Agata, Giuseppe - Kilic, Ali Ihsan - Burjan, Václav - Mrázek, Jaromír - Glagolev, Vadim - Kroha, Václav - Guardo, G. L. - La Cognata, M. - Lamia, L. - Palmerini, S. - Pizzone, R. G. - Rapisarda, G. G. - Romano, S. - Sergi, M. L. - Sparta, R. - Spitaleri, C. - Siváček, Ivan - Tumino, A.
Si-26(p, gamma) P-27 direct proton capture by means of the asymptotic normalization coefficients method for mirror nuclei.
Physical Review C. Roč. 103, č. 1 (2021), č. článku 015806. ISSN 2469-9985. E-ISSN 2469-9993
Grant CEP: GA MŠMT(CZ) EF16_013/0001679; GA MŠMT LM2018115
Institucionální podpora: RVO:61389005
Klíčová slova: direct reactions * nuclear astrophysics * nuclear reactions
Obor OECD: Nuclear physics
Impakt faktor: 3.199, rok: 2021
Způsob publikování: Omezený přístup
https://doi.org/10.1103/PhysRevC.103.015806

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)].
Trvalý link: http://hdl.handle.net/11104/0318337