The polarization of neutrons produced in the reaction ${\mathrm{Li}}^7(p, n){\mathrm{Be}}^7$ has been examined by using $n$-${\mathrm{He}}^4$ scattering as an analyzer and the pulsed-beam time-of-flight technique as a neutron spectrometer. Results are reported up to 4.95-Mev proton energy. The data include results on the neutron groups corresponding to beryllium-7 being left in its ground state and first excited state. Using neutrons of 2.1 Mev which are polarized 38%, the polarization for $n-d$ scattering at several angles has been found to be less than 0.07, which is consistent with a prediction by Christian and Gammel of negligible polarization.

• Received 24 November 1958

DOI:https://doi.org/10.1103/PhysRev.114.174