Title :
Neutron storage characteristics of CaBPO5:Ce3+ based phosphors
Author :
Sakasai, K. ; Katagiri, M. ; Matsubayashi, M. ; Nakamura, T. ; Kondo, Y.
Author_Institution :
Japan Atomic Energy Res. Inst., Ibaraki, Japan
Abstract :
Neutron storage characteristics of CaBPO5:Ce3+ based phosphors have been investigated. The authors found that the CaBPO5:Ce3+ phosphor shows photostimulated luminescence (PSL) by illumination with 635 nm laser light after neutron irradiation. The PSL yields of CaBPO5:Ce3+ phosphor were increased by adding CaF2. The green laser (532 nm) seemed to be more efficient to produce PSL signal. The phosphor might be usable in a high gamma-ray field. The fading characteristics were similar to those of a commercially available neutron imaging plate. Using a disk-like sample, a collimated neutron beam image was clearly obtained by scanning focused laser light on it.
Keywords :
boron compounds; calcium compounds; cerium; doping profiles; gamma-ray detection; laser beam effects; neutron detection; neutron effects; phosphors; photoluminescence; position sensitive particle detectors; solid scintillation detectors; 532 nm; 635 nm; CaBPO5:Ce3+; CaBPO5:Ce3+ based phosphors; CaF2; CaF2; PSL signal; collimated neutron beam image; commercially available neutron imaging plate; disk-like sample; fading characteristics; focused laser light scanning; gamma-ray sensitivity; green laser; high gamma-ray field; laser light; neutron irradiation; neutron sensitivity; neutron storage characteristics; photostimulated luminescence; position sensitive detector; Gamma rays; High-resolution imaging; Image storage; Luminescence; Material storage; Neutrons; Optical imaging; Phosphors; Position sensitive particle detectors; X-ray imaging;
Journal_Title :
Nuclear Science, IEEE Transactions on
DOI :
10.1109/TNS.2004.832287
