Shell-model studies of the astrophysical rp-process reactions 34S(p,γ)35Cl and 34g,mCl(p,γ)35Ar

• Published in: Journal of physics. Conference series 2020-12, Vol.1643 (1)
• Main Authors: Richter, W. A., Brown, B. Alex, Longland, R., Wrede, C., Fry, C., Denisenkov, P., Herwig, F., Kurtulgil, D., Pignatari, M., Reifarth, R.
• Format: Article
• Language: English
• ISSN: 1742-6588; 1742-6596
• DOI: 10.1088/1742-6596/1643/1/012064

The two rp-reactions 34S(p,γ)35Cl and 34g,mCl(p,γ)35Ar were studied via a shell-model approach. At energies in the resonance region near the proton-emission threshold many negative-parity states appear. We present results of calculations in a full (0+1)ℏω model space which addresses this problem. Energies, spectroscopic factors and proton-decay widths are calculated for input into the reaction rates. Comparisons are also made with a recent experimental determination of the reaction rate for the 34S(3He,d)35Cl reaction. The thermonuclear 34g,mCl(p,γ)35Ar reaction rates are unknown because of a lack of experimental data. The rates for transitions from the ground state of 34Cl as well as from the isomeric first excited state of 34Cl are explicitly calculated taking into account the relative populations of the two states.