Absorption and noise in x-ray phosphors
- 1 September 1973
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 44 (9) , 4199-4203
- https://doi.org/10.1063/1.1662918
Abstract
When the signal in an x‐ray image system is formed by integrating the scintillation pulses rather than by counting them, the signal‐to‐noise ratio is reduced by a factor which depends on the shape of the pulse‐height distribution. The signal‐to‐noise ratio cannot be related directly to either quantum absorption or energy absorption, and a new quantity called noise‐equivalent absorption is defined which bears a simple relationship to the signal‐to‐noise ratio. Quantum, energy, and noise‐equivalent absorption are calculated as a function of thickness and x‐ray energy for CsI, Gd2O2S, LaOBr, Zn0.6Cd0.4S, and CaWO4.This publication has 0 references indexed in Scilit: