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Exploratory work on the precision wavelength measurement of the hydrogen Lyman spectra

The Lubzinski.spectrograph has been accurately focussed and its performance as a high dispersion vacuum ultraviolet instrument has been studied.
Light sources have been designed for the excitation of the hydrogen Lyman series. The α line of this series has been obtained using exposure times ranging from twenty minutes to seven hours. A spectrogram of the hydrogen-deuterium isotope structure obtained in the fifth grating order at a dispersion of 1 A°/mm. has been obtained permitting positive identification of the hydrogen Lyman α line.
Light sources for the excitation of the first-spark spectra of copper have, been constructed and experimentally studied. This spectrum contains a large number of standard wavelengths, in the vacuum ultraviolet; however, because of low grating intensity we were unable to observe these lines.
An existent discrepancy between calculated and measured, values for the ionization potential of Helium-like atoms has been resolved by a generalized Lamb electromagnetic shift. / Science, Faculty of / Physics and Astronomy, Department of / Graduate

Identiferoai:union.ndltd.org:UBC/oai:circle.library.ubc.ca:2429/40915
Date January 1952
CreatorsDalby, Frederick William
PublisherUniversity of British Columbia
Source SetsUniversity of British Columbia
LanguageEnglish
Detected LanguageEnglish
TypeText, Thesis/Dissertation
RightsFor non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.

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