[Extension of measurable range of film dosimetry by a low energy X-ray absorption method].
The availability of an X-ray absorption technique employing a very low power X-ray tube was examined to extend measurable range for photographic film dosimetry. The X-ray tube having titanium target was operated at 8 kV and 0.2 microA to emit Ti KX-rays of moderate intensity. The degree of the Ti KX-ray absorption, defined as similar to photographic density, was measured for the two kinds of badge film, Fuji gamma-ray badge film and Kodak personal monitoring film, type 2 exposed for 60Co or 137Cs gamma-rays and developed by the respective standard procedures. The experimental results show that the dosimetric range of 0.01-100 R for the Fuji film and 0.03-1,000 R for the Kodak film may be easily measured by 1 minute counting with the relative statistical error (sigma) of 10%.
Enomoto
S
S
Department of Electrical and Electronic Engineering, Toyohashi University of Technology, Japan.
Ishino
M
M
Kaminishi
T
T
Matsuda
H
H
D002588:Cesium Radioisotopes; D003037:Cobalt Radioisotopes; D005373:Film Dosimetry / Q000379:methods*; D005720:Gamma Rays; D011851:Radioactivity; D014965:X-Rays
D002588:Cesium Radioisotopes; D003037:Cobalt Radioisotopes