APPlication of Portable Liquid Scintillation Counter : Radon Content of Underground Water and Environmental Radioactivity

The performance of a portable liquid scintillation counter desiged for in-situ analysis of radon in natural water is described. The background counting rate varies from spot to spot apparently depending on the type of rocks. The instrument is tested under various environmental conditions. The applicability to radiation surveys of relatively low-level environments is demonstrated by an investigation of volcanic fields. The Radon content in several well waters is determined with this instrument. The results obtained at a station in the field are comparable in both precision and accuracy to those obtained by current methods