DocumentCode :
1518417
Title :
Scintillation properties of LaCl3:Ce3+ crystals: fast, efficient, and high-energy resolution scintillators
Author :
van Loef, E.V.D. ; Dorenbos, P. ; van Eijk, C.W.E. ; Krämer, K. ; Güdel, H.U.
Author_Institution :
Interfaculty Reactor Inst., Delft Univ. of Technol., Netherlands
Volume :
48
Issue :
3
fYear :
2001
fDate :
6/1/2001 12:00:00 AM
Firstpage :
341
Lastpage :
345
Abstract :
The scintillation properties of LaCl3 doped with different Ce3+ concentrations studied by means of optical, X-ray, and γ-ray excitation are presented. Under optical and γ-ray excitation, Ce3+ emission is observed peaking at 330 and 352 nm. For LaCl3 doped with 2%, 4%, 10%, and 30% Ce 3+ and pure CeCl3, we measured a light yield of 46 000±3000 photons per MeV of absorbed γ-ray energy. The scintillation decay curve can be described by three decay components: short (τ=25 ns), intermediate (τ=200-800 ns), and long (τ=0.8-14 μs). The contribution of the short decay component to the total light yield increases with Ce3+ concentration: ranging from 10% for LaCl3: 2% Ce3+ to 69% for pure CeCl3. An energy resolution (full-width half-maximum over peak position) for the 662-keV full energy peak of 3.5±0.4%, 3.5±0.4%, 3.1±0.3%, 3.3±0.3%, and 3.4± 0.3%, respectively, was observed for LaCl3: 2%, 4%, 10%, 30% Ce3+ and pure CeCl3
Keywords :
cerium; lanthanum compounds; photoluminescence; scintillation; γ-ray excitation; 330 nm; 352 nm; 662 keV; Ce3+ concentration; CeCl3; LaCl3:Ce; LaCl3:Ce3+; X-ray excitation; energy resolution; light yield; optical excitation; scintillation; scintillation decay curve; total light yield; Biomedical optical imaging; Chemical technology; Crystallization; Crystals; Energy measurement; Energy resolution; Helium; Optical sensors; Picture archiving and communication systems; Stimulated emission;
fLanguage :
English
Journal_Title :
Nuclear Science, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9499
Type :
jour
DOI :
10.1109/23.940077
Filename :
940077
Link To Document :
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