LuAG:Pr codoped with Ho3+: Acceleration of Pr3+ decay by energy transfer. (May 2019)

• Record Type: Journal Article
• Authors: Páterek, Juraj; Král, Robert; Pejchal, Jan; Prokeš, Radek; Nikl, Martin
• Is Part Of: Radiation measurements. Volume 124(2019:May)
• Page Start: 122
• Page End: 126
• Publication Date: 2019-05
• Subjects: LuAG:Pr -- Acceleration of decay -- Nonradiative energy transfer -- Ho3+codoping -- Förster-dexter model; Nuclear emulsions -- Periodicals; Particle tracks (Nuclear physics) -- Periodicals; Thermoluminescence -- Periodicals; Cosmic rays -- Periodicals; Radiation -- Measurement -- Periodicals; Radiometry -- Periodicals; Radiation Monitoring -- Periodicals; Émulsions nucléaires -- Périodiques; Particules (Physique nucléaire) -- Traces -- Périodiques; Thermoluminescence -- Périodiques; Rayonnement cosmique -- Périodiques; Radiométrie -- Périodiques; 539.77
• DOI: 10.1016/j.radmeas.2019.04.004
• Languages: English
• ISSNs: 1350-4487

Abstract

Abstract: Ho 3+ codoping of Lu3 Al5 O12 activated with Pr 3+ (LuAG:Pr) induces an acceleration of Pr 3+ decay kinetics. This is caused by nonradiative energy transfer from Pr 3+ to Ho 3+ driven by a multipolar electromagnetic interaction. Luminescence and scintillation properties of LuAG:Pr codoped with Ho 3+ ions were studied over a wide concentration range. A significant acceleration of response was achieved. The Förster-Dexter model was used to analyze the decay kinetics of the Pr 3+ luminescence center and the interaction between Pr 3+ and Ho 3+ ions. Several concentration characteristics useful for tailoring the timing and light output properties are presented. Highlights: The effect of Ho 3+ codoping of LuAG:Pr is studied over a wide range of Ho 3+ concentrations. The inherent decay time of Pr 3+ in LuAG host is shortened by Ho 3+ codoping. The scintillation response of LuAG:Pr is accelerated by Ho 3+ codoping. Useful concentration dependences of timing and light output properties are obtained.