title: Cerenkov counting of low-energy beta-emitters using a new ceramic with high refractive index.
abstract: The threshold beta-ray energy for Cerenkov photon production can be reduced to about 0.07 MeV by using a transparent ceramic with a high refractive index. This makes it possible to measure the low-energy beta-emitters 14C and 45Ca by Cerenkov counting with efficiencies of 1.5% and 2.3%, respectively.
authors.affiliation: Radioisotope Research Center, Jikei University School of Medicine, 3-25-8, Nishishimbashi, Minato-ku, Tokyo 105-0003, Japan.
authors.forename: Makoto
authors.initials: M
authors.lastname: Takiue
authors.forename: Yukio
authors.initials: Y
authors.lastname: Yoshizawa
authors.forename: Haruo
authors.initials: H
authors.lastname: Fujii