title: Determination of the activity concentration of a 238 Pu solution by the defined solid angle method utilizing a novel dual diaphragm-detector assembly.
abstract: The activity concentration of a (238)Pu solution was measured by the determined solid angle method employing a novel dual diaphragm-detector assembly, which has been previously described. Due to the special requirements of the detector, a new type of source holder was developed, which consisted of sandwiching the radioisotope between two organic films called VYNS. It was experimentally demonstrated that the VYNS films do not absorb alpha particles, but reduce their energy by an average of 22 keV.A mean activity concentration for (238)Pu of 359.10+/-0.8 kBq/g was measured.
authors.affiliation: Departamento de Postgrado, Universidad Tecnologica Nacional, Buenos Aires, Argentina.
authors.forename: Julio C
authors.initials: JC
authors.lastname: Aguiar
authors.forename: Eduardo
authors.initials: E
authors.lastname: Galiano
authors.forename: Pablo
authors.initials: P
authors.lastname: Arenillas
mesh_terms: D000465:Algorithms; D000512:Alpha Particles; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D011005:Plutonium / Q000032:analysis*; D011829:Radiation Dosage; D011874:Radiometry / Q000295:instrumentation* / Q000379:methods; D012996:Solutions; D013048:Specimen Handling / Q000295:instrumentation* / Q000379:methods
chemical_list: D012996:Solutions; D011005:Plutonium