title: [New portable spectrometry recording system].
abstract: The variations of environmental gamma radiation flux were observed by using a new portable spectrometry recording system for 1 year. Spectrum analyses by the response matrix method have provided much information, and the artificial contribution can be separated from natural back ground dose by using the Th-method or the three component method.
authors.affiliation: Fukui Prefecture Environmental Radiation Monitoring Center, Tsuruga-shi, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Oonishi
mesh_terms: D001417:Background Radiation; D004784:Environmental Monitoring / Q000295:instrumentation*; D005720:Gamma Rays; D007564:Japan; D011848:Radioactive Pollutants / Q000032:analysis*; D013051:Spectrometry, Gamma / Q000295:instrumentation
chemical_list: D011848:Radioactive Pollutants