Experimental f Values and Electron Diffraction Amplitudes for Bromine

Abstract

The atomic scattering observed in electron diffraction for the Br₂ molecule is not predicted well by theory. The difficulty lies in the sensitivity of the scattering to the f values at small s. Taking advantage of this, one can obtain experimental values for the electron scattering amplitudes and the atomic structure factor. These values seem to be preferable to those obtained from calculations using statistical models. The method described is applicable to any element found in a simple, easily vaporized molecule.