title: Radioactivity and radon emanation fraction of the granites sampled at Misasa and Badgastein.
abstract: The chemical composition was analyzed and the radioactivity, radon exhalation rate and emanation fraction were measured to investigate the characteristics of the granites sampled at Misasa and Badgastein, world famous for radon therapy. The Misasa granite was probably composed of quartz, albite and microcline. The Badgastein granite was probably composed of quartz and muscovite. The radon exhalation rates and emanation fractions of the Misasa granite were much higher than those of the Badgastein granite, regardless of the (226)Ra activity concentrations.
authors.affiliation: Graduate School of Health Sciences, Okayama University, 5-1 Shikata-cho, 2-chome, Okayama 700-8558, Japan.
authors.forename: Akihiro
authors.initials: A
authors.lastname: Sakoda
authors.forename: Katsumi
authors.initials: K
authors.lastname: Hanamoto
authors.forename: Yuu
authors.initials: Y
authors.lastname: Ishimori
authors.forename: Tomohiro
authors.initials: T
authors.lastname: Nagamatsu
authors.forename: Kiyonori
authors.initials: K
authors.lastname: Yamaoka