title: Development of the primary measurement standard for gaseous radon-222 activity.
abstract: The Korea Research Institute of Standards and Science (KRISS) has developed a primary system for the activity standardization of gaseous radon-222, based on the defined solid angle counting method. The size of adsorbed radon is determined by a Cyclone Storage Phosphor System, and a buffer chamber is introduced between the measurement chamber and the source for the purpose of gas purification. The measured activity of gaseous radon-222 and its associated measurement uncertainty obtained using the system are presented.
authors.affiliation: Ionizing Radiation Center, KRISS, Yuseng-Gu, Daejeon 350-340, Republic of Korea. bchkim@pusan.ac.kr
authors.forename: B C
authors.initials: BC
authors.lastname: Kim
authors.forename: K B
authors.initials: KB
authors.lastname: Lee
authors.forename: T S
authors.initials: TS
authors.lastname: Park
authors.forename: J M
authors.initials: JM
authors.lastname: Lee
authors.forename: S H
authors.initials: SH
authors.lastname: Lee
authors.forename: P J
authors.initials: PJ
authors.lastname: Oh
authors.forename: M K
authors.initials: MK
authors.lastname: Lee
authors.forename: J K
authors.initials: JK
authors.lastname: Ahn
mesh_terms: D005740:Gases / Q000032:analysis / Q000737:chemistry* / Q000592:standards*; D006207:Half-Life; D038622:Internationality; D011829:Radiation Dosage; D011874:Radiometry / Q000295:instrumentation* / Q000592:standards*; D011886:Radon / Q000032:analysis / Q000737:chemistry* / Q000592:standards*; D012015:Reference Standards; D012016:Reference Values; D056910:Republic of Korea
chemical_list: D005740:Gases; D011886:Radon