Work

Very fast YbxY1−xAlO3 single-crystal scintillators

Year: 2004

Type: article

Abstract: Scintillation, radioluminescence, photoluminescence, and thermoluminescence characteristics of Czochralski-grown YbxY1−xAlO3 single crystals for x=0.02–0.45 are described. Under x-ray excitation, the intensity of Yb3+ charge-transfer luminescence is increasing with x and reaches at room temperature more than 11% of Bi4Ge3O12 (BGO) for x=0.45, while at 80 K it is over 170% of BGO for x⩾0.3. At room temperature, scintillation decay shows a dominant decay time of 0.8–0.9 ns for x⩾0.3 and no significant slow components were detected. The photoluminescence decay time is tuned by temperature and Yb concentration from tens of nanoseconds at 80 K down to about 0.8 ns at 295 K. Thermoluminescence glow curve below room temperature evidences very low concentration of shallow traps compared to the Ce-doped YAlO3 scintillator.

Source: Applied Physics Letters

DOI: 10.1063/1.1645987

Authors: M. Nikl, N. Solovieva, J. Pejchal, J. B. Shim, A. Yoshikawa, T. Fukuda, A. Vedda, M. Martini, D. H. Yoon

Institutions: FZU - Institute of Physics of the Czech Academy of Sciences, Tohoku University, Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, University of Milano-Bicocca, Sungkyunkwan University

Language: English

Topic: Radiation Detection and Scintillator Technologies

Subfield: Radiation

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W1498042964

FWCI: 4.125

Cites: 14

Cited by: 27

Related to: 10