A gamma scattering technique for inspecting density variation

Compton scattering, strongly depends on the electron density of the scattering medium (and in turn its mass density), is a viable tool for inspecting material. The aim of the present work is to investigate the feasibility of using gamma-ray scattering to inspect density variation in any object. A well collimated beam of 662 keV gammarays from 137Cs radioactive source has been used to extract the information of density variation for interior of sample by recording spectra with NaI(Tl) scintillation detector. The results confirm that experimental resolution for density variation in the inspected object is quite good. Copyright © 2009 Asian Publication Corporation.