Assignment of the excess absorption underlying the Schumann–Runge bands of molecular oxygen
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Deep - UV high resolution cavity ring - down spectroscopy of the Schumann – Runge bands in 16 O 2 and 18 O 2 at wavelengths 197 – 203 nm
With the use of a novel titanium:sapphire laser source delivering, upon fourth harmonic generation, narrowband and tunable radiation in the deep-UV, spectroscopic studies were performed on weak Schumann–Runge bands of oxygen. Improved values for rotational and fine structure molecular parameters for the BR u , v = 0–2 states of O2 were determined, as well as values for the v = 0–1 states in O2....
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We report the use of a tunable ArF laser at 193.26 nm to record simultaneous single-laser-shot, planar images of molecular hydrogen and hot oxygen in a turbulent H(2)-air diffusion flame. Excitation spectra of fuel and oxidantrich flame zones confirm a partial overlap of the two-photon H(2) (6,0) Q(1) E, F ? X and single-photon O(2) (10,2) R(17) B ? X (Schumann-Runge) absorption bands. UV Rayle...
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Absfract-Stetlar ultraviolet light near 1SOOA is attenuated in the Earth’s upper atmosphere due to strong absorption in the Schumarm-Runge continuum of molecular oxygen. The intensity of stars in the Schumann-Runge continuum region has been monitored by the University of Wisconsin stellar photometers aboard the OAO-2 satellite durin ‘I, occultation of the star by the Earth’s atmosphere. These d...
متن کاملPressure broadening and fine-structure-dependent predissociation in oxygen B 3sigma(u)-, v = 0.
Both laser-induced fluorescence and cavity ring-down spectral observations were made in the Schumann-Runge band system of oxygen, using a novel-type ultranarrow deep-UV pulsed laser source. From measurements on the very weak (0,0) band pressure broadening, pressure shift, and predissociation line-broadening parameters were determined for the B 3sigma(u)-, v = 0,F(i) fine-structure components fo...
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تاریخ انتشار 2015