DocumentCode :
1470822
Title :
Scintillators Based on BaF 
With Improved Performance
Author :
Rodnyi, Piotr A. ; Gain, Stanislav Dmitrievich ; Garibin, Eugeni Andreevich ; Seliverstov, Dmitryi Mikhailovich ; Khanin, Vasily M.
Author_Institution :
St. Petersburg State Polytech. Univ., St. Petersburg, Russia
Volume :
59
Issue :
5
fYear :
2012
Firstpage :
2168
Lastpage :
2172
Abstract :
The spectral-kinetic characteristics of BaF2 crystals and ceramics doped with Cd, Sc, and Tm have been investigated. Some increase in intensity of an ultrafast component (I1) of radioluminescence compared to I1 of the BaF2 crystal has been recorded in BaF2:Sc (2.0 mol.%) ceramics annealed in an atmosphere of CF 4. Significantly greater increase in I1 was obtained in a BaF 2:Tm (1.0 mol.%) crystal. A new mechanism explaining the growth of I1 has been proposed; the transfer of energy from the excited (Tm3+)* ion to a nearby pair of Ba2+ ion-interstitial ion of fluorine.
Keywords :
annealing; barium compounds; cadmium; ceramics; doping; high-speed optical techniques; interstitials; photoluminescence; scandium; scintillation; thulium; BaF2:Cd; BaF2:Sc; BaF2:Tm; annealing; ceramics; doping; energy transfer; excited ion; fluorine ion; improved performance; ion-interstitials; radioluminescence; scintillators; spectral-kinetic characteristics; ultrafast component; Annealing; Barium; Ceramics; Crystals; Ions; Luminescence; Solids; Barium compounds; VUV; fluoride; solid scintillation detectors;
fLanguage :
English
Journal_Title :
Nuclear Science, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9499
Type :
jour
DOI :
10.1109/TNS.2012.2188542
Filename :
6170583
Link To Document :
