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Published July 1925 | Published
Journal Article Open

X-Ray Radiation from Hot Sparks

Abstract

Millikan has been able to study extreme ultra-violet spectra by using a high potential condensed discharge in a high vacuum as a source of light and specially ruled gratings, and he has found that many of the strongest spectrum lines are emitted by stripped atoms, that is, atoms with no valence electrons left. As these hot sparks also were found to radiate X-rays, the spectrum of which, however, has never been analyzed, the author undertook the problem of studying this spectrum, and this paper gives the first results.

Additional Information

©1925 by the National Academy of Sciences. Communicated May 29, 1925.

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