Phys. Rev. Lett. 93, 150801 (2004) [4 pages]The Mass of 22MgReceived 16 June 2004; published 8 October 2004 Mass measurements with a relative precision of better than 1.5×10-8 were performed on 22Mg and its reaction partners 21Na and 22Na with the ISOLTRAP Penning trap mass spectrometer at CERN, yielding the mass excesses D(22Mg)=-399.92(27) keV, D(21Na)=-2184.71(21) keV, and D(22Na)=-5181.56(16) keV. The importance of these results is twofold. First, a comparative half-life (Ft value) has been obtained for the superallowed β decay of 22Mg to further test the conserved-vector-current hypothesis. Second, the resonance energy for the 21Na proton capture reaction has been independently determined, allowing direct comparisons of observable γ radiation in nova explosions with the yield expected from models. © 2004 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.93.150801
DOI:
10.1103/PhysRevLett.93.150801
PACS:
21.10.Dr, 23.40.Bw, 26.30.+k, 27.30.+t
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