title: Towards absolute activity measurements by ionisation chambers using the PENELOPE Monte-Carlo code.
abstract: The Monte-Carlo code PENELOPE for Ionisation Chamber Simulation Method has been applied for the calculation of ionisation-chamber (IC) calibration factors. Measuring only a few radionuclides well selected within the relevant energy range, and determining an adjustable parameter, commonly used radionuclides can be measured without any specific calibration. The simulation revealed a discontinuity in the IC response as a function of photon energy and its dependence on the chemical composition of the radioactive solution.
authors.affiliation: BNM-CEA/LNHB, Laboratoire National Henri Becquerel, Gif-sur-Yvette Cedex 91191, France.
authors.forename: A
authors.initials: A
authors.lastname: de Vismes
authors.forename: M N
authors.initials: MN
authors.lastname: Amiot
mesh_terms: D002138:Calibration / Q000592:standards*; D003198:Computer Simulation; D019544:Equipment Failure Analysis; D008956:Models, Chemical; D015233:Models, Statistical; D009010:Monte Carlo Method; D011829:Radiation Dosage; D011868:Radioisotopes / Q000032:analysis*; D011874:Radiometry / Q000295:instrumentation* / Q000379:methods*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D012984:Software
chemical_list: D011868:Radioisotopes