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

M. Matoš; J. C. Blackmon; L. E. Linhardt; D. W. Bardayan; C. D. Nesaraja; J. A. Clark; C. M. Deibel; P. D. O'Malley; P. D. Parker

doi:10.1103/PhysRevC.84.055806

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

M. Matoš, J. C. Blackmon, L. E. Linhardt, D. W. Bardayan, C. D. Nesaraja, J. A. Clark, C. M. Deibel, P. D. O'Malley, P. D. Parker

Nuclear Structure and Nuclear Astrophysi

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

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.

Original language	English
Article number	055806
Journal	Physical Review C - Nuclear Physics
Volume	84
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevC.84.055806
State	Published - Nov 28 2011

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

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.",

author = "M. Mato{\v s} and Blackmon, {J. C.} and Linhardt, {L. E.} and Bardayan, {D. W.} and Nesaraja, {C. D.} and Clark, {J. A.} and Deibel, {C. M.} and O'Malley, {P. D.} and Parker, {P. D.}",

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doi = "10.1103/PhysRevC.84.055806",

language = "English",

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T1 - Unbound states of 32Cl and the 31S(p,γ) 32Cl reaction rate

AU - Matoš, M.

AU - Blackmon, J. C.

AU - Linhardt, L. E.

AU - Bardayan, D. W.

AU - Nesaraja, C. D.

AU - Clark, J. A.

AU - Deibel, C. M.

AU - O'Malley, P. D.

AU - Parker, P. D.

PY - 2011/11/28

Y1 - 2011/11/28

N2 - 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.

AB - 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.

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

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