We developed a scintillator based on a Rb2HfCl6 crystal as a ternary halide crystal with intrinsic luminescence. In the photoluminescence spectra, two emission bands are observed at 383 and 434 nm. The 434nm emission band for Rb2HfCl6 may be attributed to [HfCl6]2% complex ion or [ZrCl6]2- impurity, since the Rb2HfCl6 contained Zr as impurity at 0.62 mol%. The radioluminescence band is observed at 420nm and can be attributed to the same origin as the photoluminescence band at 434 nm. The scintillation decay-time constants were 0.84 and 5.4 μs. The light yield was estimated to be 24,100 photons/MeV.
ASJC Scopus subject areas
- Physics and Astronomy(all)