Angular Distribution and Cross Section ofLi6(n, α)H3for Neutrons of 1.1, 1.5, and 2.0 Mev

The angular distribution of ${\mathrm{Li}}^6(n, \alpha ){\mathrm{H}}^3$ has been determined for 1.1, 1.5, and 2.0 Mev neutrons by track measurements in 100-micron Ilford $C2\mathrm{}$ and $E1\mathrm{}$ lithium-six loaded emulsions. The triton yield function has been expressed as a finite series of spherical harmonics in the center-of-mass system. The $s$ and $p$ components of the neutron wave appear to predominate in the reaction, but the data are not sufficiently accurate to exclude the possibility of contributions from higher angular momentum components.