Reaction rate for [sup 31]S([ital p],[gamma])[sup 32]Cl and its influence on the SiP cycle in hot stellar hydrogen burning

• Published in: Physical review. C, Nuclear physics Nuclear physics, 1994-08, Vol.50:2
• Main Authors: Vouzoukas, S., Browne, C.P., Giesen, U., Goerres, J., Graff, S.M., Herndl, H., Iliadis, C., Lamm, L.O., Meissner, J., Ross, J.G., Scheller, K., van Wormer, L., Wiescher, M., Rollefson, A.A.
• Format: Article
• Language: English
• Subjects: 663430 - Nucleon-Induced Reactions & Scattering- (1992-); 663440 - D-, T-, & He-induced Reactions & Scattering- (1992-); 663530 - Nuclear Mass Ranges- A=20-38- (1992-); BARYON REACTIONS; BETA DECAY RADIOISOTOPES; BETA-PLUS DECAY RADIOISOTOPES; CAPTURE; CHARGE-EXCHANGE REACTIONS; CHARGED PARTICLES; CHARGED-PARTICLE REACTIONS; CHLORINE 32; CHLORINE ISOTOPES; ELECTROMAGNETIC RADIATION; ENERGY LEVELS; EVEN-ODD NUCLEI; EXCITED STATES; GAMMA RADIATION; HADRON REACTIONS; HELIUM 3 REACTIONS; HYDROGEN BURNING; IONIZING RADIATIONS; ISOTOPES; LIGHT NUCLEI; LINE WIDTHS; MILLISEC LIVING RADIOISOTOPES; NUCLEAR PHYSICS AND RADIATION PHYSICS; NUCLEAR REACTIONS; NUCLEI; NUCLEON REACTIONS; ODD-ODD NUCLEI; PROTON REACTIONS; RADIATIONS; RADIOISOTOPES; RESONANCE; SECONDS LIVING RADIOISOTOPES; STAR BURNING; SULFUR 31; SULFUR 32 TARGET; SULFUR ISOTOPES; TARGETS; TRITONS
• ISSN: 0556-2813; 1089-490X
• DOI: 10.1103/PhysRevC.50.1185

The excitation energies of the proton unbound states in [sup 32]Cl have been measured in the [sup 32]S([sup 3]He,[ital t])[sup 32]Cl charge exchange reaction with high accuracy. The partial widths of the unbound levels have been calculated to derive the resonance strengths of these states in the [sup 31]S([ital p],[gamma])[sup 32]Cl reaction channel. The reaction rate for the [sup 31]S([ital p],[gamma])[sup 32]Cl reaction has been calculated and is compared with previous estimates. The role of this reaction for the closure of the SiP cycle is discussed in terms of the temperature and density conditions in hot stellar hydrogen burning.