Abstract
The absolute differential cross section and analyzing powers (θ), (θ), and (θ) of the (d→,γLi reaction have been measured with an 800 keV deuteron beam which was stopped in a gaseous target. A transition matrix element analysis of the data leads to two solutions, both of which indicate the reaction proceeds predominantly through s-wave (E1) capture, with small admixtures of M1 radiation. One solution has predominantly (E1) capture strength, the other has nearly equal capture strengths from the (E1) and (E1) transition matrix elements. Resonating group model (RGM) calculations have been performed which favor the solution with dominant (E1) capture strength. In the RGM picture, the ‘‘fusion’’ resonance in the capture cross section is a consequence of the tensor force, which couples the [dHe scattering channel to the [pHe scattering channel, enabling the reaction to proceed via the ΔS=0 (E1) transition to the ground state. The finite tensor analyzing powers of the present experiment serve to support this interpretation of the role of the tensor force.
- Received 13 November 1991
DOI:https://doi.org/10.1103/PhysRevC.45.R487
©1992 American Physical Society