Measuring of gamma-ray energy due to inelastic neutron scattering

摘要

A source of fast neutrons is pulsed to irradiate the formations surrounding a borehole with neutrons to produce inelastic neutron scattering in metallic materials located within the formations. Gamma- rays emitted from the formations in response to the inelastic neutron scattering from the metallic materials is detected as an indication of the presence of such materials within the formations.