Abstract
The structure of evaporated boron films was studied by electron diffraction, using the sector-microphotometer procedure. Eleven halos were observed in the region of s-1. Both the radial distribution and the intensity comparison methods were applied to analysis of the data. Bond distances similar to those appearing in the crystalline forms of boron were found in the evaporated film. The 12B icosahedra which are the structural entities common to the three modifications of crystal boron exist also in the film. The arrangement of the icosahedra is quite random.