Importance of L = 2 components in the 2H(d,n)3He reaction for deuteron energies below 350 keV

Angular distributions for the 2H(d,n)3He reaction have been calculated for incident deuteron energies between 19.5 keV and 349 keV. Model calculations are performed using the generalised R-matrix methodology of Lane and Robson (Phys. Rev.; 151:774 (1966), 178:1715 (1969), 185:1403 (1969)) and additional distorted-wave Born approximation terms to describe the long-range spatial contribution to the cross section. Model results are consistent with the experimental prediction of Galloway and Hall (Phys. Rev.; C21:453 (1980)) which suggests that D waves become important to a proper description of the cross section at about 290 keV. However, the model indicates that D waves make non-negligible contributions to the cross section even below this energy. (author)