title: Profiling the depth of caesium-137 contamination in concrete via a relative linear attenuation model.
abstract: An application of the relative attenuation of X rays and gamma rays for the measurement of depth of radioactive contamination in concrete and is described, based upon the photon energy spectrum of caesium-137. This has been tested on two bespoke phantoms with pressed/cast concrete and silica sand highlighting the potential for sub-millimetre depth resolution. This research highlights the importance of the ease of calibration, prior to application in the field, and improved knowledge of materials composition in legacy facilities.
authors.affiliation: Department of Engineering, Lancaster University, UK. b.a.shippen@lancaster.ac.uk
authors.forename: Alan
authors.initials: A
authors.lastname: Shippen
authors.forename: Malcolm J
authors.initials: MJ
authors.lastname: Joyce
mesh_terms: D002588:Cesium Radioisotopes / Q000032:analysis*; D003198:Computer Simulation; D003252:Construction Materials / Q000032:analysis*; D016014:Linear Models; D008422:Materials Testing / Q000379:methods*; D008956:Models, Chemical; D011829:Radiation Dosage; D011848:Radioactive Pollutants / Q000032:analysis*; D011874:Radiometry / Q000379:methods*
chemical_list: D002588:Cesium Radioisotopes; D011848:Radioactive Pollutants