Experimental and theoretical study of the {sup 2}H(d-vector{gamma}){sup 4}He reaction below E{sub c.m.}=60 keV
2004
New measurements of the analyzing powers A{sub y} and T{sub 20} have been obtained for the {sup 2}H(d,{gamma}){sup 4}He reaction at a laboratory beam energy of 115 keV. A transition matrix element analysis results in a unique solution which indicates that the reaction proceeds by 55% E2, 29% E1, and 16% M2 radiation. These results are shown to be in good agreement with the results of a new refined resonating group model calculation. The impact of these results on the extrapolated value of the astrophysical S factor for this reaction is discussed.
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