The Multiple Scattering of Fast Electrons

Abstract

The method and apparatus are described which were developed for the investigation of the multiple scattering of fast electrons. The scattering of electrons with an energy of 2.25 Mev is studied in the foils of aluminum, copper, iron, molybdenum, silver, tin, tantalum, gold, and lead. The results obtained are compared with the theory of multiple scattering. For elements from $\mathrm{Al} \mathrm{}(Z=13\mathrm{})\mathrm{}$ to $\mathrm{Sn} \mathrm{}(Z=50\mathrm{})\mathrm{}$ the experimental values for the multiple scattering coincide with those theoretically predicted. For heavy elements $\mathrm{Ta} \mathrm{}(Z=73\mathrm{})\mathrm{}$, $\mathrm{Au} \mathrm{}(Z=79\mathrm{})\mathrm{}$, $\mathrm{Pb} \mathrm{}(Z=82\mathrm{})\mathrm{}$ the experimental values are 10 to 13 percent lower than calculated.