Range of High Energy Electrons in Aluminum

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Abstract
An electron beam has been extracted from the 25-Mev betatron of the Physics Department of the University of Saskatchewan by using a magnetic peeler similar in design to that developed at the University of Illinois. The high energy electron beam was analyzed by bending it through an angle of 90° with a magnetic field. The high energy electrons were passed in turn through a flat ionization chamber, the aluminum absorber and a second ionization chamber. By measuring the ratio of the two ionization currents for different thicknesses of the absorber, the range of the electrons was determined. The ranges of electrons having energies from 12 to 16 Mev were obtained in this way and found to be in agreement with an empirical formula previously proposed by one of the authors (see reference 7 of this paper).