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

Author

Hollerman, William A. ; Bergeron, Noah P. ; Womack, Frank N. ; Goedeke, Shawn M. ; Allison, Stephen W.

Author_Institution

Dept. of Phys., Louisiana Univ., Lafayette, LA, USA

Volume

2

fYear

2003

fDate

19-25 Oct. 2003

Firstpage

713

Abstract

Previous research shows that certain properties, such as half brightness dose (N₁2/) 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 N₁2/ 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 N₁2/. The fluorescence efficiency of the tablets was also less than that measured for the other forms of YAG:Ce.

Keywords

brightness; fluorescence; garnets; phosphors; yttrium compounds; Carver press; YAG:Ce; YAl5O12:Ce; applied force; cellulose; fluorescence intensity; half brightness dose; large preparation force; phosphor tablets; preparation pressure; Aluminum; Brightness; Cerium; Fluorescence; Garnets; Paints; Phosphors; Powders; Protons; Yttrium;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium Conference Record, 2003 IEEE

ISSN

1082-3654

Print_ISBN

0-7803-8257-9

Type

conf

DOI

10.1109/NSSMIC.2003.1351799

Filename

1351799