Proton capture reaction of 33S in nova V1065 Centauri

doi:10.1088/1674-1056/21/9/099701

Abstract The 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 ³⁴Cl nuclear resonance levels. The electron screening correction and the non-resonance and the 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) ³⁴Cl 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 ³²S/³³S and ³³S/³³S, which can be used as a diagnostic tool for the novae.

Keywords: nova nucleosynthesis meteorite

Received: 29 February 2012
Revised: 12 April 2012
Accepted manuscript online:

PACS:	97.60.Bw	(Supernovae)
	97.80.Gm	(Cataclysmic binaries (novae, dwarf novae, recurrent novae, and nova-like objects); symbiotic stars)
	91.67.gn	(Meteorites)

Fund: 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), and the China West Normal University (Grant Nos. 11B007 and 11B008).

Corresponding Authors: Luo Zhi-Quan
E-mail: zqluo@tom.com

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Luo Zhi-Quan (罗志全), Zhang Jie (张洁), Long Jian-Hong (隆建宏) Proton capture reaction of ³³S in nova V1065 Centauri 2012 Chin. Phys. B 21 099701

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Proton capture reaction of ³³S in nova V1065 Centauri