The radiation field characteristics of a 137Cs source used for calibration of radiation protection instruments
Related Experiment Video
Updated: Aug 22, 2026

Irradiator Commissioning and Dosimetry for Assessment of LQ α and β Parameters, Radiation Dosing Schema, and in vivo Dose Deposition
Published on: March 11, 2021
E Fernandes1, D Freire, A C de Freitas
1Laboratório de Ciências Radiológicas/ DBB/IBRAG da Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ-Rua São Francisco Xavier, 524. CEP: 20550-013. Rio de Janeiro. RJ Brazil.
Abstract:
In this work, an experimental study of the radiation beam characteristics of the photon beams produced by commercial irradiator that uses a single collimated 137Cs source is performed. A set of lead attenuators are placed at the exit window of the irradiator to vary the air Kerma that is required to cover the instrument scales at a particular calibration distance. The results strongly enhance the findings of previous studies that a single source with appropriate attenuation and collimation is a practical solution for calibration laboratories with an acceptable overall accuracy.
Related Concept Videos
Biological Effects of Radiation
Atomic Absorption Spectroscopy: Radiation and Light Sources
Two common narrow-range 'line' sources used in AAS are hollow-cathode lamps (HCLs) and...
Atomic Emission Spectroscopy: Overview
Atomic Emission Spectroscopy: Lab
Atomic Absorption Spectroscopy: Instrumentation
The atomizer used in AAS can be either a flame atomizer or an...
Types of Radioactivity
Alpha (α) decay is the emission of an α particle from the nucleus. For example, polonium-210 undergoes α decay:
