The 25Al(p,γ)26Si reaction rate in novae

D. W. Bardayan; J. C. Blackmon; W. R. Hix; J. F. Liang; M. S. Smith; J. A. Howard; R. L. Kozub; C. R. Brune; K. Y. Chae; E. J. Lingerfelt; J. P. Scott; M. S. Johnson; K. L. Jones; S. D. Pain; J. S. Thomas; R. J. Livesay; D. W. Visser

The ²⁵Al(p,γ)²⁶Si reaction rate in novae

D. W. Bardayan, J. C. Blackmon, W. R. Hix, J. F. Liang, M. S. Smith, J. A. Howard, R. L. Kozub, C. R. Brune, K. Y. Chae, E. J. Lingerfelt, J. P. Scott, M. S. Johnson, K. L. Jones, S. D. Pain, J. S. Thomas, R. J. Livesay, D. W. Visser

Joint Center for Satellite Data Assimilation

Research output: Contribution to journal › Conference article › peer-review

Abstract

The production of ²⁶Al in novae is uncertain, in part, because of the uncertain rate of the ²⁵Al(p,γ)²⁶Si reaction at novae temperatures. This reaction is thought to be dominated by a long-sought 3⁺ level in ²⁶Si, and the calculated reaction rate varies by orders of magnitude depending on the energy of this resonance. We present evidence concerning the spin of a level at 5.914 MeV in ²⁶Si from the ²⁸Si(p,t)²⁶Si reaction studied at the Holifield Radioactive Beam Facility at ORNL. We find that the angular distribution for this level implies either a 2⁺ or 3⁺ assignment, with only a 3⁺ being consistent with the mirror nucleus, ²⁶Mg. Additionally, we have used the updated ²⁵Al(p,γ)²⁶Si reaction rate in a nova nucleosynthesis calculation and have addressed the effects of the remaining uncertainties in the rate on ²⁶Al production.

Original language	English
Journal	Proceedings of Science
State	Published - 2006
Event	9th International Symposium on Nuclear Astrophysics - Nuclei in the Cosmos, NIC 2006 - Geneva, Switzerland Duration: Jun 25 2006 → Jun 30 2006

Cite this

@article{cecfab8835e4412082a1a4641bc8f9eb,

title = "The 25Al(p,γ)26Si reaction rate in novae",

abstract = "The production of 26Al in novae is uncertain, in part, because of the uncertain rate of the 25Al(p,γ)26Si reaction at novae temperatures. This reaction is thought to be dominated by a long-sought 3+ level in 26Si, and the calculated reaction rate varies by orders of magnitude depending on the energy of this resonance. We present evidence concerning the spin of a level at 5.914 MeV in 26Si from the 28Si(p,t)26Si reaction studied at the Holifield Radioactive Beam Facility at ORNL. We find that the angular distribution for this level implies either a 2+ or 3+ assignment, with only a 3+ being consistent with the mirror nucleus, 26Mg. Additionally, we have used the updated 25Al(p,γ)26Si reaction rate in a nova nucleosynthesis calculation and have addressed the effects of the remaining uncertainties in the rate on 26Al production.",

author = "Bardayan, \{D. W.\} and Blackmon, \{J. C.\} and Hix, \{W. R.\} and Liang, \{J. F.\} and Smith, \{M. S.\} and Howard, \{J. A.\} and Kozub, \{R. L.\} and Brune, \{C. R.\} and Chae, \{K. Y.\} and Lingerfelt, \{E. J.\} and Scott, \{J. P.\} and Johnson, \{M. S.\} and Jones, \{K. L.\} and Pain, \{S. D.\} and Thomas, \{J. S.\} and Livesay, \{R. J.\} and Visser, \{D. W.\}",

year = "2006",

language = "English",

journal = "Proceedings of Science",

issn = "1824-8039",

publisher = "Sissa Medialab Srl",

note = "9th International Symposium on Nuclear Astrophysics - Nuclei in the Cosmos, NIC 2006 ; Conference date: 25-06-2006 Through 30-06-2006",

}

TY - JOUR

T1 - The 25Al(p,γ)26Si reaction rate in novae

AU - Bardayan, D. W.

AU - Blackmon, J. C.

AU - Hix, W. R.

AU - Liang, J. F.

AU - Smith, M. S.

AU - Howard, J. A.

AU - Kozub, R. L.

AU - Brune, C. R.

AU - Chae, K. Y.

AU - Lingerfelt, E. J.

AU - Scott, J. P.

AU - Johnson, M. S.

AU - Jones, K. L.

AU - Pain, S. D.

AU - Thomas, J. S.

AU - Livesay, R. J.

AU - Visser, D. W.

PY - 2006

Y1 - 2006

N2 - The production of 26Al in novae is uncertain, in part, because of the uncertain rate of the 25Al(p,γ)26Si reaction at novae temperatures. This reaction is thought to be dominated by a long-sought 3+ level in 26Si, and the calculated reaction rate varies by orders of magnitude depending on the energy of this resonance. We present evidence concerning the spin of a level at 5.914 MeV in 26Si from the 28Si(p,t)26Si reaction studied at the Holifield Radioactive Beam Facility at ORNL. We find that the angular distribution for this level implies either a 2+ or 3+ assignment, with only a 3+ being consistent with the mirror nucleus, 26Mg. Additionally, we have used the updated 25Al(p,γ)26Si reaction rate in a nova nucleosynthesis calculation and have addressed the effects of the remaining uncertainties in the rate on 26Al production.

AB - The production of 26Al in novae is uncertain, in part, because of the uncertain rate of the 25Al(p,γ)26Si reaction at novae temperatures. This reaction is thought to be dominated by a long-sought 3+ level in 26Si, and the calculated reaction rate varies by orders of magnitude depending on the energy of this resonance. We present evidence concerning the spin of a level at 5.914 MeV in 26Si from the 28Si(p,t)26Si reaction studied at the Holifield Radioactive Beam Facility at ORNL. We find that the angular distribution for this level implies either a 2+ or 3+ assignment, with only a 3+ being consistent with the mirror nucleus, 26Mg. Additionally, we have used the updated 25Al(p,γ)26Si reaction rate in a nova nucleosynthesis calculation and have addressed the effects of the remaining uncertainties in the rate on 26Al production.

UR - https://www.scopus.com/pages/publications/84887455747

M3 - Conference article

AN - SCOPUS:84887455747

SN - 1824-8039

JO - Proceedings of Science

JF - Proceedings of Science

T2 - 9th International Symposium on Nuclear Astrophysics - Nuclei in the Cosmos, NIC 2006

Y2 - 25 June 2006 through 30 June 2006

ER -

The ²⁵Al(p,γ)²⁶Si reaction rate in novae

Abstract

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