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23 April 2024

» arxiv » astro-ph/0303285

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The 21Na(p,gamma)22Mg Reaction and Oxygen-Neon Novae
S. Bishop ; R. E. Azuma ; L. Buchmann ; A. A. Chen ; M. L. Chatterjee ; J. M. D’Auria ; S. Engel ; D. Gigliotti ; U. Greife ; M. Hernanz ; D. Hunter ; A. Hussein ; D. Hutcheon ; C. Jewett ; J. Jose ; J. King ; S. Kubono ; A. M. Laird ; M. Lamey ; R. Lewis ; W. Liu ; S. Michimasa ; A. Olin ; D. Ottewell ; P. D. Parker ; J. G. Rogers ; F. Strieder ; C. Wrede ;
Date:	13 Mar 2003
Journal:	Phys.Rev.Lett. 90 (2003) 162501; Erratum-ibid. 90 (2003) 229902
Subject:	astro-ph nucl-ex
Abstract:	The 21Na(p,gamma)22Mg reaction is expected to play an important role in the nucleosynthesis of 22Na in Oxygen-Neon novae. The decay of 22Na leads to the emission of a characteristic 1.275 MeV gamma-ray line. This report provides the first direct measurement of the rate of this reaction using a radioactive 21Na beam, and discusses its astrophysical implications. The energy of the important state was measured to be E$_{c.m.}$= 205.7 $pm$ 0.5 keV with a resonance strength $omegagamma = 1.03pm0.16_{stat}pm0.14_{sys}$ meV.
Source:	arXiv, astro-ph/0303285
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