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Absolute integrated absorption intensities have been measured for the oxygen Schumann-Runge band system. From these data the total band system absorption oscillator strength was found to be between 0.00027 and 0.00031 while from the band strengths the electronic absorption oscillator strength was calculated to be 0.163±10%. The experimental method involved the photometric detection of pressure-broadened oxygen spectra from 1750 to 2000 A.
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George W. Bethke (1959) studied this question.
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