Articles
  • Optical and scintillation properties of Tb-doped apatite single crystals

  • Takayuki Yanagida* and Noriaki Kawaguchi

  • Devision of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama-cho, Ikoma, Nara 630-0101, Japan

Abstract

In the present study, we focus on the Tb-doped Sr-based apatite materials which have a chemical composition of Sr2RE8(SiO4)6O2 where RE denotes the rare earth element. The target materials in this study were Tb 0.5% doped Sr2Gd8(SiO4)6O2, Sr2Y8(SiO4)6O2, Sr2(Gd0.5Lu0.5)8(SiO4)6O2 and Sr2(Gd0.4Lu0.6)8(SiO4)6O2 crystals, and they were synthesized by the floating zone method. When we checked powder X-ray diffraction patter, we confirmed a single phase (JCPDS No:28-0212) for all the samples. In photoluminescence (PL) and X-ray induced scintillation spectra, some sharp emission lines appeared, and the emission origin was Tb3+ 4f-4f transition. We investigated PL and scintillation decay time profiles, and the main component was 1.8 and 1.3 ms, respectively. Among the samples prepared here, Sr2Gd8(SiO4)6O2 showed the highest scintillation intensity.


Keywords: Scintillator, Scintillation detector, Ionizing radiation, Luminescence

This Article

  • 2019; 20(6): 577-581

    Published on Dec 31, 2019

  • 10.36410/jcpr.2019.20.6.577
  • Received on Nov 14, 2018
  • Revised on Jan 17, 2019
  • Accepted on May 9, 2019

Correspondence to

  • Takayuki Yanagida

  • Devision of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama-cho, Ikoma, Nara 630-0101, Japan
    Tel : +81-743-72-6144 Fax: +82-743-72-6147 E-mail: t-yanagida@ms.naist.jp

  • E-mail: t-yanagida@ms.naist.jp