A SIMPLE GAMMA-RAY INSENSITIVE FAST-NEUTRON COUNTER

A gamma-ray insensitive fast-neutron counter is described which consists of a number of thin rectangular sheets of lucite coated with zinc sulfide and sandwiched together to form a rectangular block which is mounted on a photomultiplier. Pulse height spectra and absolute efficiency curves are presented for neutrons from 300 kev to 15 Mev, (auth)