Work

Scintillation efficiency of Tb:YTaO4 single crystals

Year: 2025

Type: article

Abstract: Environmentally friendly scintillators are demanded to substitute CdWO4 single crystal for X-ray imaging. Tb3+:YTaO4 single crystals are a promising candidate with a high stopping power, green emission matching to photodiodes, and a small afterglow. This study demonstrates that the light yield of Tb3+:YTaO4 scintillators is ∼ 24,000 ph/MeV. Furthermore, the fluorescence lifetime, ∼ 970 μs, though shorter than in other oxides, is close to the theoretical prediction by Judd-Ofelt analysis, indicating a high emission quantum efficiency of the Tb3+ activator. As the scintillation lifetime is shorter due to non-radiative decay, a potential light yield increase to 33,000 ph/MeV is estimated.

Source: Applied Physics Express

DOI: 10.35848/1882-0786/adb89f

Authors: Encarnación G. Víllora, Yueshen Zhou, Kenichi Watanabe, Kiyoshi Shimamura

Institutions: National Institute for Materials Science, Waseda University, Kyushu University

Language: English

Topic: Radiation Detection and Scintillator Technologies

Subfield: Radiation

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,365

OpenAlex ID: W4407778438

FWCI: 1.847

Cites: 43

Cited by: 3

Related to: 10