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July 1, 1962Journal of Research of the National Bureau of Standards Section A Physics and ChemistryOpen Access

Light source for producing self-reversed spectral lines

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Abstract

A new ligh t so urce has been d evelop ed wh ic h p roduces n umerous self-reversed lines in both the first a nd seco nd s pectr a of rare-ear th elemen ts. It consists of a pulsed arc discharge w ith a peak curren t of 75 amperes and an on-t ime of one milliseco nd per cycle. R esonance lines ar e nearly co m pletely absor bed , and can be distinguished b y t his char acter . From sp ectro grams obtained wit h t his light source, t he ground states of Tb I and U II were determ ined, an d t hose reported for Yb I , Yb II, T m I, T m II, and U I were co nfirmed.

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Cite This Study

Jack Sugar (1962) studied this question.

synapsesocial.com/papers/6a9081a6fdb099d0d8dd8a86 https://doi.org/10.6028/jres.066a.032

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