Performance comparison of neutron and X-ray sensitive photo-stimulated imaging plates.
Statistical characteristics of photo-stimulated luminescent (PSL) signals are studied using thermal neutrons, X- and gamma-rays. It is shown that the statistical fluctuation of PSL is described simply by the PSL value itself and is independent of radiation type, except for short-range high-LET particles. However, it is expected that the spatial resolution should be affected if the range of electrons or secondaries were much longer than the instrumental resolution (pixel size). When output PSL signals are compared between X- and gamma-rays, the PSL values were proportional to the exposed air dose, independent of X-ray energy. However, signals from 60Co gamma-rays were approximately 1% of 22-40 kV X-ray output at the same dose.
Kobayashi
Hisao
H
Institute for Atomic Energy, Rikkyo University, 2-5-1 Nagasaka, Yokosuka 240-0101, Japan. hkobarur@aol.com
Satoh
Masanori
M
Etoh
Masahiro
M
Ogura
Kohichi
K
Yanagie
Hironobu
H