Abstract
MEASUREMENTS of the conductivity induced in insulating materials by X- and γ-rays have shown the existence of a long period decay1, and more recent investigations2–4 have shown that the electron-trapping mechanisms which apply to photoconductivity also apply to these materials. This general picture may enable the energy-level distribution of the material to be elucidated. The present experiments have been concerned with polythene and “Perspex”, and have used a d.c. amplifier to measure the current induced by X-rays of 220 kVP (half-valuelayer = 2.5 mm. copper) both during and after irradiation.
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FOWLER, J., FARMER, F. Conductivity induced in Insulating Materials by X-Rays. Nature 173, 317–318 (1954). https://doi.org/10.1038/173317a0
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DOI: https://doi.org/10.1038/173317a0
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