Angular Distribution of theD(d, n)He3Reaction below 1 Mev

Angular distributions of the $\mathrm{D}(d, n){\mathrm{He}}^3$ reaction have been measured at 9 deuteron energies ranging from 0.1 Mev. to 0.9 Mev. Neutrons were detected by two plastic scintillators mounted on photomultiplier tubes, one of which could be rotated to make angles of 0° to 165° with the beam direction. The other scintillator, placed on the rotational axis, was used as a reference counter. Data were fitted to the expression $d\sigma \left({\theta }^{\prime }\right)=d\sigma \left(90\mathrm{}°\right)(1+A{{cos}^2\theta }^{\prime }+B{{cos}^4\theta }^{\prime })$ in the center-of-mass system by the method of least squares. The asymmetry coefficients are compared with those obtained by other workers.