Cesium 137 and its Gamma Radiation in Teleradiotherapy

Abstract

A review of the characteristics of cesium radioactivity, including partial comparison with that of cobalt is given. The measurement of cesium gamma radiation by means of an extensively calibrated substandard is described and the experimental results, particularly the half-value layers of some materials, are presented. Certain clinically important properties of the radiation, the radiation protection using radioactive cesium, and the result of a determination of the peak energy of the roentgen radiation equivalent in penetration to the cesium gamma radiation, are discussed.