Proton capture reaction of 33S in nova V1065 Centauri

Previous studies have shown that 33 S(p, γ) 34 Cl is the most important reaction that affects the abundance of 33 S in the product of nova nucleosynthesis. In this paper, a more accurate thermonuclear reaction rate of 33 S(p, γ) 34 Cl in the nova is calculated based on the newly measured 34 Cl nuclear resonance levels. The electron screening correction and the non-resonance and narrow-resonance contributions are considered. The calculations are also combined with the recent observational data of nova V1065 Centauri and show that the thermonuclear reaction rates of 33 S(p, γ) 34 Cl are significantly different in the improved method. Because these results can affect the isotopic ratio of sulfur in the nova ejecta significantly, we make an estimate of the values of 32 S/ 33 S and 33 S/ 33 S ⊙ , which can be used as a diagnostic tool for the novae.