Constraint of the Astrophysical Destruction Rate at Stellar Temperatures
Abstract
The Galactic 1.809-MeV γ-ray signature from the β decay of 26gAl is a dominant target of γ-ray astronomy, of which a significant component is understood to originate from massive stars. The 26gAl(p,g)27Si reaction is a major destruction pathway for 26gAl at stellar temperatures, but the reaction rate is poorly constrained due to uncertainties in the strengths of low-lying resonances in 27Si. The 26gAl(d,p)27Al reaction has been employed in inverse kinematics to determine the spectroscopic factors, and hence resonance strengths, of proton resonances in 27Si via mirror symmetry. Furthermore, 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 26gAl destruction rate at stellar temperatures.
- Authors:
-
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- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Physics Division
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Physics Division; Univ. of Notre Dame, IN (United States). Dept. of Physics
- Louisiana State Univ., Baton Rouge, LA (United States). Dept. of Physics and Astronomy
- Univ. of Surrey, Guildford (United Kingdom). Dept. of Physics
- Univ. of Tennessee, Knoxville, TN (United States). Dept. of Physics and Astronomy; Sungkyunkwan Univ., Suwon (Republic of Korea). Dept. of Physics
- Rutgers Univ., New Brunswick, NJ (United States). Dept. of Physics and Astronomy
- Univ. of Tennessee, Knoxville, TN (United States). Dept. of Physics and Astronomy
- Tennessee Technological Univ., Cookeville, TN (United States). Dept. of Physics
- Oak Ridge Associated Univ., Oak Ridge, TN (United States)
- Polish Academy of Sciences (PAS), Krakow (Poland). Inst. of Nuclear Physics
- Centre National de la Recherche Scientifique (CNRS), Caen (France). Centre de Recherche sur les Ions, les Matériaux et la Photonique (CIMAP), Grand Accelerateur National d'Ions Lourds (GANIL)
- Publication Date:
- Research Org.:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Holifield Radioactive Ion Beam Facility (HRIBF); Rutgers Univ., New Brunswick, NJ (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Nuclear Physics (NP); USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1185717
- Alternate Identifier(s):
- OSTI ID: 1183246; OSTI ID: 1319742
- Grant/Contract Number:
- AC05-00OR22725; FG02-96ER40955; FG02-96ER40990; FG02-96ER40983; SC0001174; PHY0354870; PHY0757678; NRF- 2014S1A2A2028636; PP/ F000715/1; FG52-08NA28552; NA0002132
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review Letters
- Additional Journal Information:
- Journal Volume: 114; Journal Issue: 21; Journal ID: ISSN 0031-9007
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 79 ASTRONOMY AND ASTROPHYSICS; 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; nuclear reactions; nuclear astrophysics; radioactive ion beams
Citation Formats
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., Schmitt, K. T., Shriner Jr., J. F., Shapira, D., Smith, M. S., Stracener, D. W., and Wilson, G. L. Constraint of the Astrophysical Al26g(p,γ)Si27 Destruction Rate at Stellar Temperatures. United States: N. p., 2015.
Web. doi:10.1103/PhysRevLett.114.212501.
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., Schmitt, K. T., Shriner Jr., J. F., Shapira, D., Smith, M. S., Stracener, D. W., & Wilson, G. L. Constraint of the Astrophysical Al26g(p,γ)Si27 Destruction Rate at Stellar Temperatures. United States. https://doi.org/10.1103/PhysRevLett.114.212501
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., Schmitt, K. T., Shriner Jr., J. F., Shapira, D., Smith, M. S., Stracener, D. W., and Wilson, G. L. Thu .
"Constraint of the Astrophysical Al26g(p,γ)Si27 Destruction Rate at Stellar Temperatures". United States. https://doi.org/10.1103/PhysRevLett.114.212501. https://www.osti.gov/servlets/purl/1185717.
@article{osti_1185717,
title = {Constraint of the Astrophysical Al26g(p,γ)Si27 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 Matei, C. and Matos, M. and Moazen, B. H. and Nesaraja, C. D. and Okołowicz, J. and O’Malley, P. D. and Peters, W. A. and Pittman, S. T. and Płoszajczak, M. and Schmitt, K. T. and Shriner Jr., J. F. and Shapira, D. and Smith, M. S. and Stracener, D. W. and Wilson, G. L.},
abstractNote = {The Galactic 1.809-MeV γ-ray signature from the β decay of 26gAl is a dominant target of γ-ray astronomy, of which a significant component is understood to originate from massive stars. The 26gAl(p,g)27Si reaction is a major destruction pathway for 26gAl at stellar temperatures, but the reaction rate is poorly constrained due to uncertainties in the strengths of low-lying resonances in 27Si. The 26gAl(d,p)27Al reaction has been employed in inverse kinematics to determine the spectroscopic factors, and hence resonance strengths, of proton resonances in 27Si via mirror symmetry. Furthermore, 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 26gAl destruction rate at stellar temperatures.},
doi = {10.1103/PhysRevLett.114.212501},
journal = {Physical Review Letters},
number = 21,
volume = 114,
place = {United States},
year = {Thu May 28 00:00:00 EDT 2015},
month = {Thu May 28 00:00:00 EDT 2015}
}
Web of Science
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