Patent ID: 6822235
Filing Date: 2004-11-23
Classification: G01T

Abstract:
An environmental radioactivity monitor including a radiation detector to detect radiation emitted from a sample that may comprise radioactive material from the environment, wherein the monitor incorporates means to analyse the signals from the radiation detector into a multiplicity of energy channels, means to use the counts in at least two energy windows to determine the shape of the low-energy tail of the ThCâ€² peak, means to use the shape of the ThCâ€² peak to predict the ThC peak, and means to correct the energy spectrum by stripping out the low-energy tail of the ThCâ€² peak and stripping out the ThC peak; means to use the counts in at least two energy windows to determine the shape of the low-energy tail of the RaCâ€² peak, and means to correct the energy spectrum by stripping out the low-energy tail of the RaCâ€² peak.