Measurement of 23Na (α,p) 26Mg at Energies Relevant to 26Al Production in Massive Stars

J. R. Tomlinson; J. Fallis; A. M. Laird; S. P. Fox; C. Akers; M. Alcorta; M. A. Bentley; G. Christian; B. Davids; T. Davinson; B. R. Fulton; N. Galinski; A. Rojas; C. Ruiz; N. de Sereville; M. Shen; A. C. Shotter

doi:10.1103/PhysRevLett.115.052702

Measurement of ²³Na (α,p) ²⁶Mg at Energies Relevant to ²⁶Al Production in Massive Stars

J. R. Tomlinson^*, J. Fallis, A. M. Laird, S. P. Fox, C. Akers, M. Alcorta, M. A. Bentley, G. Christian, B. Davids, T. Davinson, B. R. Fulton, N. Galinski, A. Rojas, C. Ruiz, N. de Sereville, M. Shen, A. C. Shotter

^*Corresponding author for this work

School of Physics and Astronomy

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

Abstract

²⁶Al is an important radioisotope in astrophysics that provides evidence of ongoing nucleosynthesis in the Galaxy. The ²³Na (α,p) ²⁶Mg reaction has been identified by a sensitivity study as being one of the most important reactions for the production of ²⁶Al in the convective C/Ne burning shell of massive stars. Owing to large uncertainties in previous experimental data, model calculations are used for the reaction rate of ²³Na (α,p) ²⁶Mg in this sensitivity study. Current experimental data suggest a reaction rate a factor of ∼40 higher than model calculations. However, a new measurement of this reaction cross section has been made in inverse kinematics in the energy range E_c.m.= 1.28 – 3.15 MeV at TRIUMF, and found to be in reasonable agreement with the model calculation. A new reaction rate is calculated and tight constraints on the uncertainty in the production of ²⁶Al, due to this reaction, are determined.

Original language	English
Article number	052702
Number of pages	5
Journal	Physical Review Letters
Volume	115
Issue number	5
Early online date	29 Jul 2015
DOIs	https://doi.org/10.1103/PhysRevLett.115.052702
Publication status	Published - 31 Jul 2015

Keywords / Materials (for Non-textual outputs)

THERMONUCLEAR REACTION-RATE
REACTION-RATES
SOLAR-SYSTEM
ASTROPHYSICS
ORIGIN
ALPHA

Access to Document

10.1103/PhysRevLett.115.052702Licence: All Rights Reserved

Cite this

Tomlinson, J. R., Fallis, J., Laird, A. M., Fox, S. P., Akers, C., Alcorta, M., Bentley, M. A., Christian, G., Davids, B., Davinson, T., Fulton, B. R., Galinski, N., Rojas, A., Ruiz, C., de Sereville, N., Shen, M., & Shotter, A. C. (2015). Measurement of ²³Na (α,p) ²⁶Mg at Energies Relevant to ²⁶Al Production in Massive Stars. Physical Review Letters, 115(5), Article 052702. https://doi.org/10.1103/PhysRevLett.115.052702

@article{2a04f4c8149840c3b142604a3d98c855,

title = "Measurement of 23Na (α,p) 26Mg at Energies Relevant to 26Al Production in Massive Stars",

abstract = "26Al is an important radioisotope in astrophysics that provides evidence of ongoing nucleosynthesis in the Galaxy. The 23Na (α,p) 26Mg reaction has been identified by a sensitivity study as being one of the most important reactions for the production of 26Al in the convective C/Ne burning shell of massive stars. Owing to large uncertainties in previous experimental data, model calculations are used for the reaction rate of 23Na (α,p) 26Mg in this sensitivity study. Current experimental data suggest a reaction rate a factor of ∼40 higher than model calculations. However, a new measurement of this reaction cross section has been made in inverse kinematics in the energy range Ec.m.= 1.28 – 3.15 MeV at TRIUMF, and found to be in reasonable agreement with the model calculation. A new reaction rate is calculated and tight constraints on the uncertainty in the production of 26Al, due to this reaction, are determined.",

keywords = "THERMONUCLEAR REACTION-RATE, REACTION-RATES, SOLAR-SYSTEM, ASTROPHYSICS, ORIGIN, ALPHA",

author = "Tomlinson, {J. R.} and J. Fallis and Laird, {A. M.} and Fox, {S. P.} and C. Akers and M. Alcorta and Bentley, {M. A.} and G. Christian and B. Davids and T. Davinson and Fulton, {B. R.} and N. Galinski and A. Rojas and C. Ruiz and {de Sereville}, N. and M. Shen and Shotter, {A. C.}",

year = "2015",

month = jul,

day = "31",

doi = "10.1103/PhysRevLett.115.052702",

language = "English",

volume = "115",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "5",

}

Tomlinson, JR, Fallis, J, Laird, AM, Fox, SP, Akers, C, Alcorta, M, Bentley, MA, Christian, G, Davids, B, Davinson, T, Fulton, BR, Galinski, N, Rojas, A, Ruiz, C, de Sereville, N, Shen, M & Shotter, AC 2015, 'Measurement of ²³Na (α,p) ²⁶Mg at Energies Relevant to ²⁶Al Production in Massive Stars', Physical Review Letters, vol. 115, no. 5, 052702. https://doi.org/10.1103/PhysRevLett.115.052702

TY - JOUR

T1 - Measurement of 23Na (α,p) 26Mg at Energies Relevant to 26Al Production in Massive Stars

AU - Tomlinson, J. R.

AU - Fallis, J.

AU - Laird, A. M.

AU - Fox, S. P.

AU - Akers, C.

AU - Alcorta, M.

AU - Bentley, M. A.

AU - Christian, G.

AU - Davids, B.

AU - Davinson, T.

AU - Fulton, B. R.

AU - Galinski, N.

AU - Rojas, A.

AU - Ruiz, C.

AU - de Sereville, N.

AU - Shen, M.

AU - Shotter, A. C.

PY - 2015/7/31

Y1 - 2015/7/31

N2 - 26Al is an important radioisotope in astrophysics that provides evidence of ongoing nucleosynthesis in the Galaxy. The 23Na (α,p) 26Mg reaction has been identified by a sensitivity study as being one of the most important reactions for the production of 26Al in the convective C/Ne burning shell of massive stars. Owing to large uncertainties in previous experimental data, model calculations are used for the reaction rate of 23Na (α,p) 26Mg in this sensitivity study. Current experimental data suggest a reaction rate a factor of ∼40 higher than model calculations. However, a new measurement of this reaction cross section has been made in inverse kinematics in the energy range Ec.m.= 1.28 – 3.15 MeV at TRIUMF, and found to be in reasonable agreement with the model calculation. A new reaction rate is calculated and tight constraints on the uncertainty in the production of 26Al, due to this reaction, are determined.

AB - 26Al is an important radioisotope in astrophysics that provides evidence of ongoing nucleosynthesis in the Galaxy. The 23Na (α,p) 26Mg reaction has been identified by a sensitivity study as being one of the most important reactions for the production of 26Al in the convective C/Ne burning shell of massive stars. Owing to large uncertainties in previous experimental data, model calculations are used for the reaction rate of 23Na (α,p) 26Mg in this sensitivity study. Current experimental data suggest a reaction rate a factor of ∼40 higher than model calculations. However, a new measurement of this reaction cross section has been made in inverse kinematics in the energy range Ec.m.= 1.28 – 3.15 MeV at TRIUMF, and found to be in reasonable agreement with the model calculation. A new reaction rate is calculated and tight constraints on the uncertainty in the production of 26Al, due to this reaction, are determined.

KW - THERMONUCLEAR REACTION-RATE

KW - REACTION-RATES

KW - SOLAR-SYSTEM

KW - ASTROPHYSICS

KW - ORIGIN

KW - ALPHA

UR - http://www.scopus.com/inward/record.url?scp=84938784345&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.115.052702

DO - 10.1103/PhysRevLett.115.052702

M3 - Article

AN - SCOPUS:84938784345

SN - 0031-9007

VL - 115

JO - Physical Review Letters

JF - Physical Review Letters

IS - 5

M1 - 052702

ER -

Measurement of ²³Na (α,p) ²⁶Mg at Energies Relevant to ²⁶Al Production in Massive Stars

Abstract

Keywords / Materials (for Non-textual outputs)

Access to Document

Other files and links

Fingerprint

Edinburgh Nuclear Physics Group Consolidated Grant Proposal

THOMAS Davinson

Cite this

Measurement of 23Na (α,p) 26Mg at Energies Relevant to 26Al Production in Massive Stars

Abstract

Keywords / Materials (for Non-textual outputs)

Access to Document

Other files and links

Fingerprint

Projects

Edinburgh Nuclear Physics Group Consolidated Grant Proposal

Profiles

THOMAS Davinson

Cite this

Measurement of ²³Na (α,p) ²⁶Mg at Energies Relevant to ²⁶Al Production in Massive Stars