Applied Optics · 1962 · 73 citations · 8 references
Natural SciencesChemistryPhysicsRadiation DetectionSpectroscopic AnalysisSpectroscopyPhotochemistryUltraviolet SpectroscopyIntensity AnalysisLyman Alpha EmissionPhotochemical Ozone FormationPhotoelectric EffectUltraviolet PhotochemistryVacuum Ultraviolet Spectroscopy
An intense hydrogen light source for use in photochemistry is described, which yields intensities of up to 1016 quanta/sec in the 1100–1850 Å spectral region. Intensity measurements were made employing the photochemical formation of ozone in a flow of oxygen and the photoelectric volume effect in a nickel cathode. The intensity distribution was obtained mainly from spectrometric work. Typical observed intensities were 3 × 1015 quanta/sec in the 1400–1650 Å region and 3 × 1015 quanta/sec for Lyman-alpha at 1216 Å. Under the influence of the discharge the transmittance of LiF windows gradually decreases; however, the percentage decrease is a well-reproducible function of time.
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The Far Ultraviolet Absorption Spectrum of Oxygen
W. C. Price, G. J. Collins · Physical Review · 1935 · 123 citations
Natural Sciences, Chemistry, Physics +15