電子線を用いたX線増感紙の較正(III. 加速器・放射光・測定装置)

概要

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In order to extract the maximum performance of the screen-type X-ray film for the detection of cascade showers in emulsion chambers, we examined the effect of the thickness of the phosphor screen by irradiation with 200 MeV electron beams. The observed data is in agreement with our analytical prediction of the radiative transfer of photons in a phosphor screen. If we use a combination of the specially prepared screen, HR16B, with a phosphor layer of 400μm and a green-sensitive X-ray film, HA30, the detection threshold energy of cascade showers can be considerably lowered down to 140 GeV.
東北大学の論文