Abstract
The total cross section of the LiHe reaction has been measured for deuteron energies between 50 and 180 keV. From a detailed distorted-wave Born approximation analysis of the angular distributions and the excitation function up to 1 MeV it was possible to determine the strength of a subthreshold resonance that dominates the cross section at sub-Coulomb energies and contributes significantly to the increase of the astrophysical factor at low energies. Consequently the electron screening energy we have determined for the Li(d,He reaction is considerably smaller than the value given in previous works which overestimate the theoretical predictions. In addition the stellar reaction rate has been calculated up to a temperature of =3.
- Received 4 June 1996
DOI:https://doi.org/10.1103/PhysRevC.55.1517
©1997 American Physical Society