Abstract
The role and effect of stable ${\rm Ce}^{4+}$ centers in Ce-doped LuAG single crystal scintillator is further studied by means of measurements of several optical, luminescence and scintillation characteristics. Two LuAG:Ce single crystal samples are compared: in one of them the dominating ${\rm Ce}^{4 +}$ center is stabilized by high concentration ${\rm Mg}^{2+}$ codoping while the other one shows only the presence of stable ${\rm Ce}^{3 + }$ center. Tailored (Eu, Mg)–doped LuAG single crystal is also prepared to test the presence and thermal stability of hole traps in the host which affect the timing characteristics of ${\rm Ce}^{4+}$ scintillation cycle, namely its restoration back to 4+ charge state in last step of the cycle. EPR experiment was also employed at Mg- and (Eu, Mg) doped LuAG samples and the signature of the ${\rm O}^ - $ hole center stabilized by ${\rm Mg}^{2 +}$ ion was clearly obtained.
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 callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
