Constraint of the astrophysical Al 26g (p,γ) Si 27 destruction rate at stellar temperatures

S. D. Pain; D. W. Bardayan; J. C. Blackmon; S. M. Brown; K. Y. Chae; K. A. Chipps; J. A. Cizewski; K. L. Jones; R. L. Kozub; J. F. Liang; C. Matei; M. Matos; B. H. Moazen; C. D. Nesaraja; J. Okołowicz; P. D. O'Malley; W. A. Peters; S. T. Pittman; M. Płoszajczak; K. T. Schmitt; J. F. Shriner; D. Shapira; M. S. Smith; D. W. Stracener; G. L. Wilson

doi:10.1103/PhysRevLett.114.212501

Constraint of the astrophysical Al 26g (p,γ) Si 27 destruction rate at stellar temperatures

S. D. Pain, D. W. Bardayan, J. C. Blackmon, S. M. Brown, K. Y. Chae, K. A. Chipps, J. A. Cizewski, K. L. Jones, R. L. Kozub, J. F. Liang, C. Matei, M. Matos, B. H. Moazen, C. D. Nesaraja, J. Okołowicz, P. D. O'Malley, W. A. Peters, S. T. Pittman, M. Płoszajczak, K. T. SchmittJ. F. Shriner, D. Shapira, M. S. Smith, D. W. Stracener, G. L. Wilson

Nuclear Structure and Nuclear Astrophysi

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Abstract

The Galactic 1.809-MeV γ-ray signature from the β decay of Al26g is a dominant target of γ-ray astronomy, of which a significant component is understood to originate from massive stars. The Al26g(p,γ)Si27 reaction is a major destruction pathway for Al26g at stellar temperatures, but the reaction rate is poorly constrained due to uncertainties in the strengths of low-lying resonances in Si27. The Al26g(d,p)Al27 reaction has been employed in inverse kinematics to determine the spectroscopic factors, and hence resonance strengths, of proton resonances in Si27 via mirror symmetry. The strength of the 127-keV resonance is found to be a factor of 4 higher than the previously adopted upper limit, and the upper limit for the 68-keV resonance has been reduced by an order of magnitude, considerably constraining the Al26g destruction rate at stellar temperatures.

Original language	English
Article number	212501
Journal	Physical Review Letters
Volume	114
Issue number	21
DOIs	https://doi.org/10.1103/PhysRevLett.114.212501
State	Published - May 28 2015

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Pain, S. D., Bardayan, D. W., Blackmon, J. C., Brown, S. M., Chae, K. Y., Chipps, K. A., Cizewski, J. A., Jones, K. L., Kozub, R. L., Liang, J. F., Matei, C., Matos, M., Moazen, B. H., Nesaraja, C. D., Okołowicz, J., O'Malley, P. D., Peters, W. A., Pittman, S. T., Płoszajczak, M., ... Wilson, G. L. (2015). Constraint of the astrophysical Al 26g (p,γ) Si 27 destruction rate at stellar temperatures. Physical Review Letters, 114(21), Article 212501. https://doi.org/10.1103/PhysRevLett.114.212501

@article{6ca19fce70e74229b8eb604b4c004deb,

title = "Constraint of the astrophysical Al 26g (p,γ) Si 27 destruction rate at stellar temperatures",

abstract = "The Galactic 1.809-MeV γ-ray signature from the β decay of Al26g is a dominant target of γ-ray astronomy, of which a significant component is understood to originate from massive stars. The Al26g(p,γ)Si27 reaction is a major destruction pathway for Al26g at stellar temperatures, but the reaction rate is poorly constrained due to uncertainties in the strengths of low-lying resonances in Si27. The Al26g(d,p)Al27 reaction has been employed in inverse kinematics to determine the spectroscopic factors, and hence resonance strengths, of proton resonances in Si27 via mirror symmetry. The strength of the 127-keV resonance is found to be a factor of 4 higher than the previously adopted upper limit, and the upper limit for the 68-keV resonance has been reduced by an order of magnitude, considerably constraining the Al26g destruction rate at stellar temperatures.",

author = "Pain, {S. D.} and Bardayan, {D. W.} and Blackmon, {J. C.} and Brown, {S. M.} and Chae, {K. Y.} and Chipps, {K. A.} and Cizewski, {J. A.} and Jones, {K. L.} and Kozub, {R. L.} and Liang, {J. F.} and C. Matei and M. Matos and Moazen, {B. H.} and Nesaraja, {C. D.} and J. Oko{\l}owicz and O'Malley, {P. D.} and Peters, {W. A.} and Pittman, {S. T.} and M. P{\l}oszajczak and Schmitt, {K. T.} and Shriner, {J. F.} and D. Shapira and Smith, {M. S.} and Stracener, {D. W.} and Wilson, {G. L.}",

note = "Publisher Copyright: {\textcopyright} 2015 American Physical Society.",

year = "2015",

month = may,

day = "28",

doi = "10.1103/PhysRevLett.114.212501",

language = "English",

volume = "114",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "21",

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Pain, SD, Bardayan, DW, Blackmon, JC, Brown, SM, Chae, KY, Chipps, KA, Cizewski, JA, Jones, KL, Kozub, RL, Liang, JF, Matei, C, Matos, M, Moazen, BH, Nesaraja, CD, Okołowicz, J, O'Malley, PD, Peters, WA, Pittman, ST, Płoszajczak, M, Schmitt, KT, Shriner, JF, Shapira, D, Smith, MS, Stracener, DW & Wilson, GL 2015, 'Constraint of the astrophysical Al 26g (p,γ) Si 27 destruction rate at stellar temperatures', Physical Review Letters, vol. 114, no. 21, 212501. https://doi.org/10.1103/PhysRevLett.114.212501

TY - JOUR

T1 - Constraint of the astrophysical Al 26g (p,γ) Si 27 destruction rate at stellar temperatures

AU - Pain, S. D.

AU - Bardayan, D. W.

AU - Blackmon, J. C.

AU - Brown, S. M.

AU - Chae, K. Y.

AU - Chipps, K. A.

AU - Cizewski, J. A.

AU - Jones, K. L.

AU - Kozub, R. L.

AU - Liang, J. F.

AU - Matei, C.

AU - Matos, M.

AU - Moazen, B. H.

AU - Nesaraja, C. D.

AU - Okołowicz, J.

AU - O'Malley, P. D.

AU - Peters, W. A.

AU - Pittman, S. T.

AU - Płoszajczak, M.

AU - Schmitt, K. T.

AU - Shriner, J. F.

AU - Shapira, D.

AU - Smith, M. S.

AU - Stracener, D. W.

AU - Wilson, G. L.

PY - 2015/5/28

Y1 - 2015/5/28

N2 - The Galactic 1.809-MeV γ-ray signature from the β decay of Al26g is a dominant target of γ-ray astronomy, of which a significant component is understood to originate from massive stars. The Al26g(p,γ)Si27 reaction is a major destruction pathway for Al26g at stellar temperatures, but the reaction rate is poorly constrained due to uncertainties in the strengths of low-lying resonances in Si27. The Al26g(d,p)Al27 reaction has been employed in inverse kinematics to determine the spectroscopic factors, and hence resonance strengths, of proton resonances in Si27 via mirror symmetry. The strength of the 127-keV resonance is found to be a factor of 4 higher than the previously adopted upper limit, and the upper limit for the 68-keV resonance has been reduced by an order of magnitude, considerably constraining the Al26g destruction rate at stellar temperatures.

AB - The Galactic 1.809-MeV γ-ray signature from the β decay of Al26g is a dominant target of γ-ray astronomy, of which a significant component is understood to originate from massive stars. The Al26g(p,γ)Si27 reaction is a major destruction pathway for Al26g at stellar temperatures, but the reaction rate is poorly constrained due to uncertainties in the strengths of low-lying resonances in Si27. The Al26g(d,p)Al27 reaction has been employed in inverse kinematics to determine the spectroscopic factors, and hence resonance strengths, of proton resonances in Si27 via mirror symmetry. The strength of the 127-keV resonance is found to be a factor of 4 higher than the previously adopted upper limit, and the upper limit for the 68-keV resonance has been reduced by an order of magnitude, considerably constraining the Al26g destruction rate at stellar temperatures.

UR - http://www.scopus.com/inward/record.url?scp=84931291843&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.114.212501

DO - 10.1103/PhysRevLett.114.212501

M3 - Article

AN - SCOPUS:84931291843

SN - 0031-9007

VL - 114

JO - Physical Review Letters

JF - Physical Review Letters

IS - 21

M1 - 212501

ER -

Constraint of the astrophysical Al 26g (p,γ) Si 27 destruction rate at stellar temperatures

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