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The 21Na(p,gamma)22Mg reaction from Ec.m. = 200 to 1103 keV in novae and x-ray bursts

D’Auria, J.M., Azuma, R.E., Bishop, S., Buchmann, L., Chatterjee, M.L., Chen, A.A., Engel, S., Gigliotti, D., Greife, U., Hunter, D., Hussein, A., Hutcheon, D., Jewett, C.C., José, J., King, J.D., Laird, A.M., Lamey, M., Lewis, R., Liu, W., Olin, A., Ottewell, D., Parker, P., Rogers, J., Ruiz, C., Trinczek, M. and Wrede, C. (2004) The 21Na(p,gamma)22Mg reaction from Ec.m. = 200 to 1103 keV in novae and x-ray bursts. Physical Review C, 69 (6). Art. No. 065803. ISSN 1089-490X

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The long-lived radioactive nuclide 22Na (t1∕2=2.6 yr) is an astronomical observable for understanding the physical processes of oxygen-neon novae. Yields of 22Na in these events are sensitive to the unknown total rate of the 21Na(p,γ)22Mg reaction. Using a high intensity 21Na beam at the TRIUMF-ISAC facility, the strengths of seven resonances in 22Mg , of potential astrophysical importance, have been directly measured at center of mass energies from Ec.m.=200 to 1103 keV . We report the results obtained for these resonances and their respective contributions to the 21Na(p,γ)22Mg rate in novae and x-ray bursts, and their impact on 22Na production in novae.

Item Type: Article
Institution: The University of York
Academic Units: The University of York > Physics (York)
Depositing User: York RAE Import
Date Deposited: 07 Apr 2009 10:32
Last Modified: 07 Apr 2009 10:32
Published Version: http://dx.doi.org/10.1103/PhysRevC.69.065803
Status: Published
Publisher: The American Physical Society.
Identification Number: 10.1103/PhysRevC.69.065803
URI: http://eprints.whiterose.ac.uk/id/eprint/7284

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