Previous studies have shown that 33S（p,γ）34Cl is the most important reaction that affects the abundance of 33S in the product of nova nucleosynthesis. In this paper, a more accurate thermonuclear reaction rate of ...Previous studies have shown that 33S（p,γ）34Cl is the most important reaction that affects the abundance of 33S in the product of nova nucleosynthesis. In this paper, a more accurate thermonuclear reaction rate of 33S（p, γ）34Cl in the nova is calculated based on the newly measured 34C1 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 33S（p, γ） 34C1 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 328/33S and 338/338Q, which can be used as a diagnostic tool for the novae.展开更多
基金Project supported by the National Natural Science Foundation of China (Grant No. 10778719)the Scientific Research Funds of Sichuan Provincial Education Department, China (Grant Nos. 2009ZB087 and 10ZC004)the China West Normal University(Grant Nos.11B007 and 11B008)
文摘Previous studies have shown that 33S（p,γ）34Cl is the most important reaction that affects the abundance of 33S in the product of nova nucleosynthesis. In this paper, a more accurate thermonuclear reaction rate of 33S（p, γ）34Cl in the nova is calculated based on the newly measured 34C1 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 33S（p, γ） 34C1 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 328/33S and 338/338Q, which can be used as a diagnostic tool for the novae.
