Abstract
Data obtained from studies of the and the reactions have been used to extract the transition amplitudes corresponding to (doublet) and (quartet) radiative capture. Protons (deuterons) of 40 keV (80 keV) were stopped in ice targets. Angular distributions of , , and were fit simultaneously in terms of the four possible -wave capture amplitudes and the two and possible -wave capture amplitudes. The results obtained at keV indicate that the capture cross section is 13.77 0.66 nb, while the capture cross section is 6.74 0.44 nb. These results agree with the predictions of a recent three-body theoretical calculation which includes two-body currents [e.g., meson-exchange currents (MEC’s)]. They also agree with the previous experimental determination of the doublet and quartet fusion rates obtained using the Wolfenstein-Gerstein effect to vary the relative population of and nuclear spins in the -- molecule prior to fusion.
- Received 18 September 1997
DOI:https://doi.org/10.1103/PhysRevC.56.R2917
©1997 American Physical Society