Storage luminescence and scintillation properties of Eu-doped SrAl2O4 crystals

Storage luminescence and scintillation properties of Eu-doped SrAl2O4 crystals Eu-doped SrAl2O4 (Eu:SrAl2O4) crystals are prepared by a floating zone (FZ) method. In photoluminescence (PL), an intense broad emission peak around 510nm due to 5d-4f transition of Eu2+ appear under excitation at 250–450nm. The PL decay time constants are about 800ns due to the 5d-4f transitions of Eu2+. In the nondoped sample, emission peaks around 480 and 560nm are observed upon excitation at 316nm. The X-ray induced scintillation spectra also show an intense broad emission peak around 510nm, and the decay time constants are approximately 500ns. In the pulse height spectra of the 2.5% Eu:SrAl2O4 crystal, the absolute light yield is ~46,000ph/MeV. In thermally stimulated luminescence (TSL) after X-ray irradiation, strong TSL glow peaks are observed at 120 and 400°C. In optically stimulated luminescence (OSL) after X-ray irradiation, emission peaks are observed around 510nm while exposing the samples to the stimulation light at 800nm. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Luminescence Elsevier

Storage luminescence and scintillation properties of Eu-doped SrAl2O4 crystals

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Publisher
Elsevier
Copyright
Copyright © 2016 Elsevier B.V.
ISSN
0022-2313
eISSN
1872-7883
D.O.I.
10.1016/j.jlumin.2016.04.008
Publisher site
See Article on Publisher Site

Abstract

Eu-doped SrAl2O4 (Eu:SrAl2O4) crystals are prepared by a floating zone (FZ) method. In photoluminescence (PL), an intense broad emission peak around 510nm due to 5d-4f transition of Eu2+ appear under excitation at 250–450nm. The PL decay time constants are about 800ns due to the 5d-4f transitions of Eu2+. In the nondoped sample, emission peaks around 480 and 560nm are observed upon excitation at 316nm. The X-ray induced scintillation spectra also show an intense broad emission peak around 510nm, and the decay time constants are approximately 500ns. In the pulse height spectra of the 2.5% Eu:SrAl2O4 crystal, the absolute light yield is ~46,000ph/MeV. In thermally stimulated luminescence (TSL) after X-ray irradiation, strong TSL glow peaks are observed at 120 and 400°C. In optically stimulated luminescence (OSL) after X-ray irradiation, emission peaks are observed around 510nm while exposing the samples to the stimulation light at 800nm.

Journal

Journal of LuminescenceElsevier

Published: Aug 1, 2016

References

  • Thermoluminescence of Solids
    McKeever, S.W.S.
  • Radiat. Meas.
    Miyamoto, Y.; Ohno, T.; Takei, Y.; Nanto, H.; Kurobori, T.; Yanagida, T.; Yoshikawa, A.; Nagashima, Y.; Yamamoto, T.
  • Radiat. Meas.
    Yanagida, T.; Fujimoto, Y.; Watanabe, K.; Fukuda, K.; Kawaguchi, N.; Miyamoto, Y.; Nanto, H.

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