Experimental and theoretical study of the 2H ( d→ ,γ ) 4H e reaction below Ec.m. =60 keV
Abstract
New measurements of the analyzing powers Ay and T20 have been obtained for the 2H ( d,γ ) 4H e 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.
- Publication:
-
Physical Review C
- Pub Date:
- December 2004
- DOI:
- 10.1103/PhysRevC.70.064601
- Bibcode:
- 2004PhRvC..70f4601S
- Keywords:
-
- 25.40.Lw;
- 24.70.+s;
- 26.35.+c;
- 24.10.Eq;
- Radiative capture;
- Polarization phenomena in reactions;
- Big Bang nucleosynthesis;
- Coupled-channel and distorted-wave models