Abstract
We investigated scintillation properties of Yb3+-doped Y 3A5O12 (YAG) transparent ceramics with different dopant concentrations. The transparency of both 0.3% and 15% Yb 3+-doped exceeded 70% in the wavelength range 300-800 nm, and two kinds of absorption bands due to charge transfer (CT) transition and 4f-4f forbidden transition of Yb3+ were observed around 200-250 nm and 900 nm, respectively. Ultraviolet luminescence caused by the CT transition between Yb3+ and O2- was observed under α-ray excitation from 241Am sealed source. The scintillation decay times were determined to be about 2.2 ns (Yb 0.3%) and 1.4 ns (Yb 15%) using the streak camera system equipped with pulsed X-ray source. From 241Am alpha-ray-excited pulse height spectra, the relative scintillation light yield of 0.3% and 15% Yb3+-doped ceramics was 7% and 10% compared with that of BGO commercial scintillator.
Original language | English |
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Pages (from-to) | 778-781 |
Number of pages | 4 |
Journal | Optical Materials |
Volume | 35 |
Issue number | 4 |
DOIs | |
Publication status | Published - 2013 Feb |
Keywords
- Charge transfer (CT) transition
- Scintillators
- Transparent ceramic
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Computer Science(all)
- Atomic and Molecular Physics, and Optics
- Spectroscopy
- Physical and Theoretical Chemistry
- Organic Chemistry
- Inorganic Chemistry
- Electrical and Electronic Engineering