Abstract
Surface coverage and epitaxial growth of Te deposits, 45 Å thick, on KBr surfaces at 150°C irradiated by electrons, with 10 9–10 13 electrons cm 2 · s at 20–1000 eV, have been studied by transmission electron microscopy and diffraction. Without the electron irradiation, Te deposits showed a needle-like shape with orientation: (101̄0), [0001]Te ∥ (001), [110] [11̄0]KBr, and about 30% surface coverage. With the electron irradiation, the density of the Te nuclei increased markedly and the deposits changed to agglomerated granular structure with partly random orientation. The surface coverage was improved to about 60–80% by irradiation with 10 11–10 12 electrons cm 2 · s at 20–250 eV, but somewhat decreased when the electron density exceeded 10 12 electrons cm 2 · s.
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