Pressure broadening and saturation lineshapes of CO at pressures between 10-2 Pa and 102 Pa

Details Pressure broadening and saturation lineshapes of CO at pressures between 10-2 Pa and 102 Pa Pressure broadening and saturation lineshapes of CO at pressures between 10-2 Pa and 102 Pa

Apr 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aipc..467..487p&link_type=abstract

The 14th international conference on spectral line shapes. AIP Conference Proceedings, Volume 467, pp. 487-488 (1999).

Physics

Infrared Spectra, Line And Band Widths, Shapes, And Shifts, Potential Energy Surfaces For Collisions

Scientific paper

Saturated absorption lineshapes in the CO v=1<--0 band were measured at pressures between 10-2 Pa and 102 Pa in pure CO and CO-He mixtures with a spectral resolution of better than Δν/ν=3×10-10. The CO saturation signals mainly consist of narrow dips with a homogeneous width that nonlinearly depends on pressure due to dominant contributions of velocity changing collisions (VCC) and a broader background that can also be attributed to VCC. Preliminary evaluation shows a change of the CO self broadening coefficient from 96 kHz/Pa for p<3 Pa to 38 kHz/Pa for 15 Pa

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