Gas electron diffraction: the direction of development of the method

Abstract

The problems of gas phase electron diffraction experiments are considered. The operating conditions for a reconstructed electron diffraction apparatus are determined in a scattering regime with an effective cross section of σ = 1.06 × 102 b on a molecular beam with Kn > 1. On the example of the I2 molecule it is shown that at a vapor pressure over a substance equal to 10−3 mmHg, one can sort out a desired signal at scattering angles up to s = 30 A−1. A nomographic chart for the choice of the optimal operating conditions of electrons scattering is proposed.