HIGH-ENERGY BREMSSTRAHLUNG IN COLLISIONS OF ELECTRONS WITH ONE- AND 2-ELECTRON ATOMS

A brief discussion of the fundamental formulas for electron-electron and electron-atom bremsstrahlung is given. Some general results are given for complex atoms and explicit expressions for the cross sections for one- and two-electron atoms are exhibited graphically. It is shown that for 1e and 2e atoms which have a residual charge, that is, for ions, the total cross section is composed of several terms, one of which is (Z-1)2 or (Z-2)2 (respectively) times the cross section for electrons incident on unshielded protons. Some results for general atoms or molecules in the high- and low-energy limits are indicated. © 1969 The American Physical Society.