Title :
Eu Doped and Eu, Tl Co-Doped NaI Scintillators
Author :
Shiran, Natalia V. ; Gektin, Alexander V. ; Boyarintseva, Yanina ; Vasyukov, Sergey ; Boyarintsev, Andrej ; Pedash, Vyacheslav ; Tkachenko, Sergej ; Zelenskaya, Olga ; Kosinov, N. ; Kisil, O. ; Philippovich, L.
Author_Institution :
Inst. for Scintillation Mater. NAS of Ukraine, Kharkov, Ukraine
fDate :
6/1/2010 12:00:00 AM
Abstract :
It is shown that Eu co-doping of NaI:Tl allows to modify scintillation properties and reach a better performance comparing to NaI:Tl. The overlapping of absorption, excitation and emission bands typical for Eu2+ and T1+ ions might be the reason for energy exchange between these luminescence centers in NaI:Tl, Eu. Enhanced efficiency of Eu2+ emission and delayed rise times in NaI:Tl, Eu confirm this assumption. Eu co-doping allows to utilize an additional excitation channels in “conventional” NaI:Tl scintillator.
Keywords :
doping; europium; sodium compounds; solid scintillation detectors; thallium; NaI:EuTl; absorption band overlapping; delayed rise time; doped scintillator; emission band overlapping; emission efficiency; energy exchange; excitation band overlapping; luminescence center; Crystallization; Crystals; Electromagnetic wave absorption; Energy exchange; Energy resolution; Kinetic theory; Luminescence; Pollution measurement; Spectroscopy; Steady-state; Energy transfer; NaI-Tl, Eu; integration time; luminescence; scintillation;
Journal_Title :
Nuclear Science, IEEE Transactions on
DOI :
10.1109/TNS.2010.2048578
