title: Evaluation of sodium activation distribution in the PMMA water phantom after fast neutron irradiation.
abstract: (24)Na produced by the neutron activation of stable sodium in the body is commonly used to assess neutron doses after criticality accidents. However, the (24)Na distribution is not uniform owing to the interaction with the human body. In this study, we experimentally evaluated the (24)Na distribution in a PMMA water phantom and 60 polyethylene vials. The vials were analyzed to evaluate the sodium activation distribution in the PMMA water phantom by employing a correction factor.
authors.affiliation: Korea Institute of Radiological and Medical Sciences (KIRAMS), Seoul 139-706, Republic of Korea.
authors.forename: Wi-Ho
authors.initials: WH
authors.lastname: Ha
authors.forename: Seyong
authors.initials: S
authors.lastname: Park
authors.forename: Jaeryong
authors.initials: J
authors.lastname: Yoo
authors.forename: Seokwon
authors.initials: S
authors.lastname: Yoon
authors.forename: Seung-Sook
authors.initials: SS
authors.lastname: Lee
authors.forename: Jong Kyung
authors.initials: JK
authors.lastname: Kim
mesh_terms: D001681:Biological Assay / Q000379:methods*; D040761:Biomimetic Materials / Q000737:chemistry / Q000528:radiation effects; D009502:Neutrons; D019904:Polymethyl Methacrylate / Q000737:chemistry* / Q000528:radiation effects*; D011829:Radiation Dosage; D011834:Radiation Monitoring / Q000379:methods*; D015203:Reproducibility of Results; D012542:Scattering, Radiation; D012680:Sensitivity and Specificity; D012979:Sodium Radioisotopes / Q000032:analysis* / Q000528:radiation effects
chemical_list: D012979:Sodium Radioisotopes; D019904:Polymethyl Methacrylate
keywords: Activation distribution; Criticality accident; Cyclotron-based neutrons; Fast neutron irradiation; Neutron activation