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Updated: Jun 20, 2026

In situ FTIR Spectroscopy as a Tool for Investigation of Gas/Solid Interaction: Water-Enhanced CO2 Adsorption in UiO-66 Metal-Organic Framework
Published on: February 1, 2020
Observation of an infrared band sequence in molecular oxygen at 0.1 Torr
Abstract:
The 1-5-microm emission spectrum from the negative glow of a pulsed oxygen discharge at 0.1 Torr has been examined with a Fourier spectrometer in the time-resolved mode. In addition to well-known atomic lines, our spectrum contains nine regularly spaced linelike features around 4000 cm(-1). We interpreted these features as molecular Rydberg-Rydberg transitions of the type DeltaLambda = 1 and Deltaupsilonv = 0. Additional features at 7000 cm(-1) are assigned to the f(1)Sigma(u)(+) -d(1)II(g) transition in oxygen, resulting in greatly improved spectroscopic constants for the d state.
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