Scintillation and dosimetric properties of Eu-doped SrCO₃ ceramics prepared by spark plasma sintering method

Abstract

Eu-doped SrCO₃ (Eu:SrCO₃) ceramics are prepared by a spark plasma sintering (SPS) technique. In photoluminescence (PL), emissions around 615 nm due to 4f–4f transition of Eu³⁺ appear under several excitation wavelengths. The PL decay time constants are 314 ns due to the host and 400–600 µs due to Eu³⁺. The X-ray induced scintillation spectra show an intense emission peak and some small bands around 615 nm and scintillation decay time constants are 210–224 µs. In thermally stimulated luminescence (TSL) after X-ray irradiation, a strong TSL glow peak is observed in 450°C and TSL intensity increase in association with Eu concentration.