Analysis of Scintillation Spectrometer Observations of the Penetration of Cs137 Gamma Radiation through Water

Spectral modifications of Cs137 gamma radiations produced by penetration and diffusion through water have been observed. A single crystal of NaI(Tl) was used to observe the pulse-height distributions produced by radiation from both plane parallel and point isotropic sources. Inversion of the pulse-height distribution was carried out by use of an analog computer to obtain the spectral distribution of radiation.