Eu Doped and Eu, Tl Co-Doped NaI Scintillators

Eu Doped and Eu, Tl Co-Doped NaI Scintillators

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 Eu 2+ and T1 + ions might be the reason for energy exchange between these luminescence center...

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Veröffentlicht in:IEEE transactions on nuclear science 2010-06, Vol.57 (3), p.1233-1235
Hauptverfasser: Shiran, Natalia V, Gektin, Alexander V, Boyarintseva, Yanina, Vasyukov, Sergey, Boyarintsev, Andrej, Pedash, Vyacheslav, Tkachenko, Sergej, Zelenskaya, Olga, Kosinov, N, Kisil, O, Philippovich, L
Format: Artikel
Sprache:eng
Schlagworte:
Bands
Channels
Cobalt
Crystallization
Crystals
Electromagnetic wave absorption
Emission
Energy exchange
Energy resolution
Energy transfer
Excitation
integration time
Kinetic theory
Luminescence
NaI-Tl
Pollution measurement
Scintillation
Spectroscopy
Steady-state
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Zusammenfassung: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 Eu 2+ and T1 + ions might be the reason for energy exchange between these luminescence centers in NaI:Tl, Eu. Enhanced efficiency of Eu 2+ 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.
ISSN:0018-9499
1558-1578
DOI:10.1109/TNS.2010.2048578