21Na(p,gamma)22Mg reaction and oxygen-neon novae.
作者信息
Bishop S, Azuma R E, Buchmann L, Chen A A, Chatterjee M L, D'Auria J M, Engel S, Gigliotti D, Greife U, Hernanz M, Hunter D, Hussein A, Hutcheon D, Jewett C, José J, King J, Kubono S, Laird A M, Lamey M, Lewis R, Liu W, Michimasa S, Olin A, Ottewell D, Parker P D, Rogers J G, Strieder F, Wrede C
机构信息
Simon Fraser University, Burnaby, British Columbia, Canada.
出版信息
Phys Rev Lett. 2003 Apr 25;90(16):162501. doi: 10.1103/PhysRevLett.90.162501. Epub 2003 Apr 24.
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+/-0.5 keV with a resonance strength omegagamma=1.03+/-0.16(stat)+/-0.14(sys) meV.
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