Proton-decaying states in ^22Mg and the nucleosynthesis of ^22Na in novae

Details Proton-decaying states in ^22Mg and the nucleosynthesis of ^22Na in novae Proton-decaying states in ^22Mg and the nucleosynthesis of ^22Na in novae

Oct 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aps..dnp.gf005d&link_type=abstract

American Physical Society, Division of Nuclear Physics Fall Meeting, October 30 - November 1, 2003, Tucson, Arizona, MEETING ID:

Physics

Nuclear Physics

Scientific paper

Populating states in ^22Mg via the (p,t) reaction in inverse kinematics with a 55 MeV/nucleon ^24Mg beam, we have measured the proton-decay branching ratios of the levels at 5.96 MeV and 6.05 MeV and obtained an experimental upper limit on the branching ratio of the 5.71 MeV state. On the basis of the present and previous measurements, we assign spins and parities to the 5.96 MeV and 6.05 MeV states. We combine our branching ratios with independent measurements of the lifetimes of these states or their ^22Ne analogs to compute the resonance strengths and thereby the astrophysical rate of the ^21Na(p,γ)^22Mg reaction. With this rate we perform hydrodynamic calculations of nova outbursts in order to predict their ^22Na γ-ray fluxes.

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