Phys. Rev. C 69, 065803 (2004) [16 pages]The 21Na(p,γ)22Mg reaction from Ec.m.=200 to 1103 keV in novae and x-ray burstsReceived 12 February 2004; published 24 June 2004 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. © 2004 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevC.69.065803
DOI:
10.1103/PhysRevC.69.065803
PACS:
25.40.Lw, 26.30.+k, 21.10.−k, 27.30.+t
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