Abstract
In this study, Ce-doped SrAl2O4 (Ce:SrAl2O4) crystals were prepared by a floating zone (FZ) method and experimental evaluations were performed for scintillator applications. In photoluminescence (PL) with an excitation around 320nm, an intense broad emission peak appears around 380nm due to the 5d-4f transitions. The PL decay time constants are approximately 30ns. The X-ray induced scintillation spectrum also shows an intense broad emission peak around 380nm. Among the samples evaluated with different concentrations of Ce, the absolute light yield under 137Cs is considerably high (∼3900ph/MeV) when the concentration of Ce is 1.0%. In thermally stimulated luminescence (TSL) after X-ray irradiation, strong TSL glow peaks are observed at 110, 210 and 330°C. The samples also shows optically stimulated luminescence (OSL) after X-ray irradiation, in which the emission appears around 380nm due to the 5d-4f emission bands of Ce3+ while the samples is exposed to the stimulation light at 655nm.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
