A very intense source of hydrogen atoms for atomic and molecular beam experiments has been obtained using pure hydrogen gas. In this work, a source head heated by a dc arc, very similar to the unit described by Knuth’s group [Rev. Sci. Instrum. 40, 1346 (1969)] was used. Fluxes of at least 4×1017 hydrogen atoms/sr sec with energies of about 5 eV have been repeatedly attained.
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Way et al. (1976) studied this question.
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