Journal articles
Constraint of the Astrophysical $^{26g}$Al(p;γ)$^{27}$Si 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. Okolowicz
P.D. O’malley
W.A. Peters
S.T. Pittman
M. Ploszajczak
1
K.T. Schmitt
J.F. Shriner
D. Shapira
M.S. Smith
D.W. Stracener
G.L. Wilson
G.L. Wilson
Author
1
GANIL - Grand Accélérateur National d'Ions Lourds (Bvd Henri Becquerel - BP 55027 - 14076 CAEN CEDEX 5 - France)
- CNRS - Centre National de la Recherche Scientifique : UPR3266 (France)
- CEA - Commissariat à l'énergie atomique et aux énergies alternatives : DRF/GANIL (Centre de Saclay Centre de Grenoble Centre de Cadarache etc - France)
- IN2P3 - Institut National de Physique Nucléaire et de Physique des Particules du CNRS (France)
Abstract : The Galactic 1.809-MeV γ-ray signature from the β decay of $^{26g}$Al is a dominant target of γ-ray
astronomy, of which a significant component is understood to originate from massive stars. The
$^{26g}$Al(p; γ)$^{27}$Si reaction is a major destruction pathway for $^{26g}$Al at stellar temperatures, but the reaction
rate is poorly constrained due to uncertainties in the strengths of low-lying resonances in $^{27}$Si. The
$^{26g}$Al(d; p)$^{27}$Al reaction has been employed in inverse kinematics to determine the spectroscopic factors,
and hence resonance strengths, of proton resonances in $^{27}$Si 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
$^{26g}$Al destruction rate at stellar temperatures.
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Journal articles
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http://hal.in2p3.fr/in2p3-01158394
Contributor : Michel Lion <>
Submitted on : Monday, June 1, 2015 - 8:55:48 AM
Last modification on : Thursday, February 1, 2018 - 1:26:53 AM
Contributor : Michel Lion <>
Submitted on : Monday, June 1, 2015 - 8:55:48 AM
Last modification on : Thursday, February 1, 2018 - 1:26:53 AM
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- HAL Id : in2p3-01158394, version 1
- DOI : 10.1103/PhysRevLett.114.212501
Citation
S.D. Pain, D.W. Bardayan, J.C. Blackmon, S.M. Brown, K.Y. Chae, et al.. Constraint of the Astrophysical $^{26g}$Al(p;γ)$^{27}$Si Destruction Rate at Stellar Temperatures. Physical Review Letters, American Physical Society, 2015, 114 (21), pp.212501. ⟨10.1103/PhysRevLett.114.212501⟩. ⟨in2p3-01158394⟩
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