Direct studies of low-energy resonances in P-31(p, alpha)Si-28 and Cl-35(p, alpha)S-32

作者：Moazen B H^*; Matei C; Bardayan D W; Blackmon J C; Chae K Y; Chipps K A; Hatarik R; Jones K L; Kozub R L; Matos M; Nesaraja C D; O'Malley P D; Pain S D; Pelham T; Peters W A; Pittman S T; Shriner J F Jr; Smith M S

来源：European Physical Journal A, 2011, 47(5): 66.

DOI：10.1140/epja/i2011-11066-7

Low-energy resonances in P-31(p, alpha)Si-28 and Cl-35(p, alpha)(32) S were studied directly in order to gain a better understanding of reaction cycling in the Si-Ar region in novae. New resonance strengths at E-c.m. = 600 and 622 keV in P-31(p, alpha)Si-28 were measured (omega gamma(p,alpha) = (2.2 +/- 0.7) x 10(-2) eV and omega gamma(p,alpha) = (0.99 +/- 0.08) eV, respectively) as well as the E-c.m. = 610 keV resonance in Cl-35(p, alpha)S-32 [omega gamma(p,alpha) = (1.2 +/- 0.2) x 10(-2) eV], the lowest energy that any resonance in this reaction has been observed, directly or indirectly. The strengths of these resonances were found to be lower than previously determined, resulting in even weaker cycling in the Si-Ar region.

• 出版日期2011-5