The D-D cross-section and angular distribution between 55 and 430 keV

The cross-section and angular distributions of protons from the D-D reaction using thin gas targets have been measured from 55 to 430 keV. The results have been expressed in the form σθ = (σ/4π(1+⅓A+1/5B)) (1+A cos2θ + B cos4θ). The variation of the total cross-section σ and the asymmetry coefficients A and B over the energy range 15 to 190 keV can be described by the theory of Beiduk, Pruett & Konopinski introducing only a small or negligible amount of spin-orbit coupling. The ratio of the number of 3He’s to 3H’s has been measured up to 250 keV at a few angles in the forward direction only, and found to be unity within experimental error.