Abstract
Within the framework of the modified potential cluster model with forbidden states, the reaction rate and the astrophysical factor are considered. It is shown that the first N resonance determines the factor and contributions of the and transitions are negligible at energies , but are significant at high energies. The factor strongly depends on the resonance parameters. The influence of the width of the resonance on the factor is demonstrated. The reaction rate is calculated and an analytical approximation for the reaction rate is proposed. A comparison of our calculation with existing data is addressed. Results of our calculations for the reaction rate provide the contribution to the steadily improving reaction-rate database libraries. Our calculations of the reaction rate along with results for the rates of the and processes provide the temperature range for the conversion of the carbon-nitrogen-oxygen (CNO) cycle to the hot CNO cycle. Our results demonstrate that, at the early stages of a nova explosion at temperatures of about and at late stages of evolution of supermassive stars at temperatures of about , the ignition of the hot CNO cycle could occur at much lower densities of a stellar medium.
2 More- Received 24 February 2020
- Revised 23 August 2020
- Accepted 21 September 2020
DOI:https://doi.org/10.1103/PhysRevC.102.045805
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