The Recording of Electron Tracks in Photographic Emulsions

Abstract

Four different methods of obtaining electron tracks in nuclear-track plates are described. Electron tracks have been produced by x-rays, by natural radioactive decay, by exposures in an electron microscope, and by feeble, induced radioactivity. A first attempt at establishing the range-energy relationship of electrons has been made from length measurements of electron tracks produced by heterogeneous and monochromatic x-rays at various kilovoltages and by monoenergetic electrons in an electron microscope. Some considerations are given on the sensitivity of the nuclear-track plate used in these experiments.