Author/Authors :
M. Trinczek، نويسنده , , C.C. Jewett، نويسنده , , J.M. DʹAuria، نويسنده , , Karen S. Bishop، نويسنده , , L. Buchmann، نويسنده , , A.A. Chen، نويسنده , , S. Engel، نويسنده , , D. Gigliotti، نويسنده , , U. Greife، نويسنده , , D. Hunter، نويسنده , , A. Hussein، نويسنده , , Ian D. Hutcheon ، نويسنده , , J. José، نويسنده , , A.M Laird، نويسنده , , M. Lamey، نويسنده , , R. Lewis، نويسنده , , A. Olin، نويسنده , , D. Ottewel، نويسنده , , P. Parker، نويسنده , , M.M. Pavan، نويسنده , , et al.، نويسنده ,
Abstract :
A series of astrophysical measurements was recently completed at TRIUMF, related to the unknown total rate of the 21Na(p, γ)22Mg reaction. With a high intensity 21Na beam from the ISAC facility, the DRAGON recoil mass spectrometer was used to directly measure seven resonances at center of mass energies from Ec.m.=200 to 1135 keV and determine their respective contributions to the 21Na(p, γ)22Mg reaction rate in novae and x-ray bursts, as well as their impact on 22Na production in novae. This study also allowed the investigation of different excited states in 22Mg; proposed decays and spin assignments are given for the 6246, 6329, and 6609 keV levels.
