DocumentCode :
1517730
Title :
Evaluation of Gamma-Ray Response of Tm: 
Single Crystals
Author :
Abe, Naoto ; Yokota, Yuui ; Yanagida, Takayuki ; Kawaguchi, Noriaki ; Pejchal, Jan ; Yoshikawa, Akira
Author_Institution :
Inst. of Multidiscipl. Res. for Adv. Mater., Tohoku Univ., Sendai, Japan
Volume :
57
Issue :
3
fYear :
2010
fDate :
6/1/2010 12:00:00 AM
Firstpage :
1304
Lastpage :
1307
Abstract :
Tm3+ doped BaF2 single crystal scintillator has been investigated. Undoped, 0.1, 0.5, and 1% Tm -doped BaF2 are compared in terms of their decay time, light yield, non-proportionality and energy resolution. The fast component of Tm doped BaF2 is characterized by a 5 ~ 6 ns decay time and it can be related to the Tm3+ 5d - 4f VUV emission from 4fn-1 5d low-spin state (parity allowed and spin allowed transition). The light yield of Tm doped BaF2 is lower with respect to the undoped BaF2 and systematically decreases with increasing Tm concentration. However, 0.1%Tm:BaF2 showed a better non-proportionality and energy resolution than the undoped sample.
Keywords :
barium compounds; doping; gamma-ray detection; radiative lifetimes; solid scintillation detectors; thulium; ultraviolet spectra; 5d-4f VUV emission; BaF2:Tm3+; Tm concentration; decay time; energy resolution; gamma-ray response; light yield; low-spin state; nonproportionality; single crystal scintillator; Chromium; Crystals; Doping; Energy resolution; Excitons; Gas detectors; Photodiodes; Photomultipliers; Physics; Radiation detectors; 5d – 4f emission; VUV; fluoride; gamma-ray response;
fLanguage :
English
Journal_Title :
Nuclear Science, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9499
Type :
jour
DOI :
10.1109/TNS.2010.2040486
Filename :
5485122
Link To Document :
