Unbound states of ³²Cl and the ³¹S(p,γ) ³²Cl reaction rate

Authors

M. Matoš, Louisiana State University
J. C. Blackmon, Louisiana State University
L. E. Linhardt, Louisiana State University
D. W. Bardayan, ORNL Physics Division
C. D. Nesaraja, ORNL Physics Division
J. A. Clark, Argonne National Laboratory
C. M. Deibel, Argonne National Laboratory
P. D. O'Malley, Rutgers University–New Brunswick
P. D. Parker, Yale University

Document Type

Article

Publication Date

11-28-2011

Abstract

The 31S(p,γ)32Cl reaction is expected to provide the dominant break-out path from the SiP cycle in novae and is important for understanding enrichments of sulfur observed in some nova ejecta. We studied the 32S(3He,t)32Cl charge-exchange reaction to determine properties of proton-unbound levels in 32Cl that have previously contributed significant uncertainties to the 31S(p,γ)32Cl reaction rate. Measured triton magnetic rigidities were used to determine excitation energies in 32Cl. Proton-branching ratios were obtained by detecting decay protons from unbound 32Cl states in coincidence with tritons. An improved 31S(p,γ)32Cl reaction rate was calculated including robust statistical and systematic uncertainties. © 2011 American Physical Society.

Publication Source (Journal or Book title)

Physical Review C - Nuclear Physics

Recommended Citation

Matoš, M., Blackmon, J., Linhardt, L., Bardayan, D., Nesaraja, C., Clark, J., Deibel, C., O'Malley, P., & Parker, P. (2011). Unbound states of ³²Cl and the ³¹S(p,γ) ³²Cl reaction rate. Physical Review C - Nuclear Physics, 84 (5) https://doi.org/10.1103/PhysRevC.84.055806