Changes in half brightness dose due to preparation pressure for YAG:Ce

Previous research shows that certain properties, such as half brightness dose (N/sub 1/2/) and fluorescence intensity, depend on preparation pressure. Phosphor tablets composed of 50% cellulose and 50% yttrium aluminum garnet doped with cerium (YAG:Ce) powders, were created using a Carver press with...

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Published in2003 IEEE Nuclear Science Symposium. Conference Record (IEEE Cat. No.03CH37515) Vol. 2; pp. 713 - 716 Vol.2
Main Authors Hollerman, W.A., Bergeron, N.P., Womack, F.N., Goedeke, S.M., Allison, S.W.
Format Conference Proceeding
LanguageEnglish
Published IEEE 2003
Subjects
Aluminum
Brightness
Cerium
Fluorescence
Garnets
Phosphors
Powders
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Summary:Previous research shows that certain properties, such as half brightness dose (N/sub 1/2/) and fluorescence intensity, depend on preparation pressure. Phosphor tablets composed of 50% cellulose and 50% yttrium aluminum garnet doped with cerium (YAG:Ce) powders, were created using a Carver press with an applied force of 78 kN. The average 3 MeV proton N/sub 1/2/ for the tablet samples was 11.6 and 36.6 times smaller than equivalent values for the paint and crystal forms of YAG:Ce respectively. It is quite apparent that the application of a large preparation force damages some of the YAG:Ce grains which reduces the N/sub 1/2/. The fluorescence efficiency of the tablets was also less than that measured for the other forms of YAG:Ce.
ISBN:0780382579
9780780382572
ISSN:1082-3654
2577-0829
DOI:10.1109/NSSMIC.2003.1351799