Abstract
We report the details of a post-heating cell developed to obtain high-velocity molecular beams. Zn and Se molecular beams generated from this cell are evaluated by measuring deposition rate by means of a quartz thickness monitor. The observed deposition rates are analyzed by means of a simple model for the operation of an ionization gauge. We found that Zn atoms have a thermal velocity determined by the temperature at the post-heating zone, and that Se molecules are thermally cracked.
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