title: Assessment of neutron dosemeters around standard sources and nuclear fissile objects.
abstract: In order to evaluate the neutron doses around nuclear fissile objects, a comparative study has been made on several neutron dosemeters: bubble dosemeters, etched-track detectors (CR-39) and 3He-filled proportional counters used as dose-rate meters. The measurements were made on the ambient and the personal dose equivalents H*(10) and Hp(10). Results showed that several bubble dosemeters should have been used due to a low reproducibility in the measurements. A strong correlation with the neutron energy was also found, with about a 30% underestimation of Hp(10) for neutrons from the PuBe source, and about a 9% overestimation for neutrons from the 252Cf source. Measurements of the nuclear fissile objects were made using the CR-39 and the dose-rate meters. The CR-39 led to an underestimation of 30% with respect to the neutron dose-rate meter measurements. In addition, the MCNP calculation code was used in the different configurations.
authors.affiliation: CEA, Centre d'études de Valduc, Service de Protection contre les Rayonnements, Is-sur-Tille, France.
authors.forename: N
authors.initials: N
authors.lastname: Raimondi
authors.forename: B
authors.initials: B
authors.lastname: Tournier
authors.forename: J E
authors.initials: JE
authors.lastname: Groetz
authors.forename: J
authors.initials: J
authors.lastname: Piot
authors.forename: E
authors.initials: E
authors.lastname: Riebler
authors.forename: P
authors.initials: P
authors.lastname: Crovisier
authors.forename: A
authors.initials: A
authors.lastname: Chambaudet
authors.forename: N
authors.initials: N
authors.lastname: Cabanné
mesh_terms: D002142:Californium; D005214:Fast Neutrons; D009502:Neutrons; D009680:Nuclear Fission; D019047:Phantoms, Imaging; D011005:Plutonium; D011874:Radiometry / Q000379:methods*; D015203:Reproducibility of Results
chemical_list: D011005:Plutonium; D002142:Californium