Inverse Kinematic Study of the 26gAl(d,p)27Al Reaction and Implications for Destruction of 26Al in Wolf-Rayet and Asymptotic Giant Branch Stars

V. Margerin; G. Lotay; P. J. Woods; M. Aliotta; G. Christian; B. Davids; T. Davinson; D. T. Doherty; J. Fallis; D. Howell; O. S. Kirsebom; D. J. Mountford; A. Rojas; C. Ruiz; J. A. Tostevin

doi:10.1103/PhysRevLett.115.062701

Inverse Kinematic Study of the 26gAl(d,p)27Al Reaction and Implications for Destruction of 26Al in Wolf-Rayet and Asymptotic Giant Branch Stars

V. Margerin, G. Lotay^*, P. J. Woods, M. Aliotta, G. Christian, B. Davids, T. Davinson, D. T. Doherty, J. Fallis, D. Howell, O. S. Kirsebom, D. J. Mountford, A. Rojas, C. Ruiz, J. A. Tostevin

^*Corresponding author for this work

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract / Description of output

In Wolf-Rayet and asymptotic giant branch (AGB) stars, the 26gAl(p,γ)27Si reaction is expected to govern the destruction of the cosmic γ-ray emitting nucleus 26Al. The rate of this reaction, however, is highly uncertain due to the unknown properties of key resonances in the temperature regime of hydrogen burning. We present a high-resolution inverse kinematic study of the 26gAl(d,p)27Al reaction as a method for constraining the strengths of key astrophysical resonances in the 26gAl(p,γ)27Si reaction. In particular, the results indicate that the resonance at Er=127 keV in 27Si determines the entire 26gAl(p,γ)27Si reaction rate over almost the complete temperature range of Wolf-Rayet stars and AGB stars.

Original language	English
Article number	062701
Pages (from-to)	1-5
Number of pages	5
Journal	Physical Review Letters
Volume	115
Issue number	6
Early online date	5 Aug 2015
DOIs	https://doi.org/10.1103/PhysRevLett.115.062701
Publication status	Published - 7 Aug 2015

Keywords / Materials (for Non-textual outputs)

EARLY SOLAR-SYSTEM
EMISSION-LINES
MASSIVE STARS
NUCLEI
DECAY

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10.1103/PhysRevLett.115.062701

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Margerin, V., Lotay, G., Woods, P. J., Aliotta, M., Christian, G., Davids, B., Davinson, T., Doherty, D. T., Fallis, J., Howell, D., Kirsebom, O. S., Mountford, D. J., Rojas, A., Ruiz, C., & Tostevin, J. A. (2015). Inverse Kinematic Study of the 26gAl(d,p)27Al Reaction and Implications for Destruction of 26Al in Wolf-Rayet and Asymptotic Giant Branch Stars. Physical Review Letters, 115(6), 1-5. Article 062701. https://doi.org/10.1103/PhysRevLett.115.062701

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title = "Inverse Kinematic Study of the 26gAl(d,p)27Al Reaction and Implications for Destruction of 26Al in Wolf-Rayet and Asymptotic Giant Branch Stars",

abstract = "In Wolf-Rayet and asymptotic giant branch (AGB) stars, the 26gAl(p,γ)27Si reaction is expected to govern the destruction of the cosmic γ-ray emitting nucleus 26Al. The rate of this reaction, however, is highly uncertain due to the unknown properties of key resonances in the temperature regime of hydrogen burning. We present a high-resolution inverse kinematic study of the 26gAl(d,p)27Al reaction as a method for constraining the strengths of key astrophysical resonances in the 26gAl(p,γ)27Si reaction. In particular, the results indicate that the resonance at Er=127 keV in 27Si determines the entire 26gAl(p,γ)27Si reaction rate over almost the complete temperature range of Wolf-Rayet stars and AGB stars.",

keywords = "EARLY SOLAR-SYSTEM, EMISSION-LINES, MASSIVE STARS, NUCLEI, DECAY",

author = "V. Margerin and G. Lotay and Woods, {P. J.} and M. Aliotta and G. Christian and B. Davids and T. Davinson and Doherty, {D. T.} and J. Fallis and D. Howell and Kirsebom, {O. S.} and Mountford, {D. J.} and A. Rojas and C. Ruiz and Tostevin, {J. A.}",

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doi = "10.1103/PhysRevLett.115.062701",

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Margerin, V, Lotay, G, Woods, PJ , Aliotta, M, Christian, G, Davids, B, Davinson, T, Doherty, DT, Fallis, J, Howell, D, Kirsebom, OS, Mountford, DJ, Rojas, A, Ruiz, C & Tostevin, JA 2015, 'Inverse Kinematic Study of the 26gAl(d,p)27Al Reaction and Implications for Destruction of 26Al in Wolf-Rayet and Asymptotic Giant Branch Stars', Physical Review Letters, vol. 115, no. 6, 062701, pp. 1-5. https://doi.org/10.1103/PhysRevLett.115.062701

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T1 - Inverse Kinematic Study of the 26gAl(d,p)27Al Reaction and Implications for Destruction of 26Al in Wolf-Rayet and Asymptotic Giant Branch Stars

AU - Margerin, V.

AU - Lotay, G.

AU - Woods, P. J.

AU - Aliotta, M.

AU - Christian, G.

AU - Davids, B.

AU - Davinson, T.

AU - Doherty, D. T.

AU - Fallis, J.

AU - Howell, D.

AU - Kirsebom, O. S.

AU - Mountford, D. J.

AU - Rojas, A.

AU - Ruiz, C.

AU - Tostevin, J. A.

N1 - DoA is a proxy.

PY - 2015/8/7

Y1 - 2015/8/7

N2 - In Wolf-Rayet and asymptotic giant branch (AGB) stars, the 26gAl(p,γ)27Si reaction is expected to govern the destruction of the cosmic γ-ray emitting nucleus 26Al. The rate of this reaction, however, is highly uncertain due to the unknown properties of key resonances in the temperature regime of hydrogen burning. We present a high-resolution inverse kinematic study of the 26gAl(d,p)27Al reaction as a method for constraining the strengths of key astrophysical resonances in the 26gAl(p,γ)27Si reaction. In particular, the results indicate that the resonance at Er=127 keV in 27Si determines the entire 26gAl(p,γ)27Si reaction rate over almost the complete temperature range of Wolf-Rayet stars and AGB stars.

AB - In Wolf-Rayet and asymptotic giant branch (AGB) stars, the 26gAl(p,γ)27Si reaction is expected to govern the destruction of the cosmic γ-ray emitting nucleus 26Al. The rate of this reaction, however, is highly uncertain due to the unknown properties of key resonances in the temperature regime of hydrogen burning. We present a high-resolution inverse kinematic study of the 26gAl(d,p)27Al reaction as a method for constraining the strengths of key astrophysical resonances in the 26gAl(p,γ)27Si reaction. In particular, the results indicate that the resonance at Er=127 keV in 27Si determines the entire 26gAl(p,γ)27Si reaction rate over almost the complete temperature range of Wolf-Rayet stars and AGB stars.

KW - EARLY SOLAR-SYSTEM

KW - EMISSION-LINES

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DO - 10.1103/PhysRevLett.115.062701

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JO - Physical Review Letters

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Inverse Kinematic Study of the 26gAl(d,p)27Al Reaction and Implications for Destruction of 26Al in Wolf-Rayet and Asymptotic Giant Branch Stars

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Edinburgh Nuclear Physics Group Consolidated Grant Proposal

Philip Woods

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Inverse Kinematic Study of the 26gAl(d,p)27Al Reaction and Implications for Destruction of 26Al in Wolf-Rayet and Asymptotic Giant Branch Stars

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