1937•Proceedings of the Physical SocietyRequires access
The effect of secondary beta radiation on gamma-ray measurements made in air
Charles W. Wilson
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Abstract
A sensitive method of measuring small ionization currents is described, and the effect of secondary beta radiation upon ionization measurements of gamma radiation is examined. It is shown that if ionization chambers made of light-atom materials have walls less than 4.0 mm. thick, secondary beta radiation is recorded so that readings are in excess of the true values. The results explain some discrepancies found by other workers.