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

6 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.\}",

year = "2011",

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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.

UR - https://www.scopus.com/pages/publications/83055169598

U2 - 10.1103/PhysRevC.84.055806

DO - 10.1103/PhysRevC.84.055806

M3 - Article

AN - SCOPUS:83055169598

SN - 0556-2813

VL - 84

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

IS - 5

M1 - 055806

ER -

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

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