N/sub 2/ pressure - broadened O/sub 3/ line widths and strengths near 1129. 4 cm-1
A Beer's Law experiment was performed with a tunable diode laser to find the N/sub 2/ pressure broadening characteristics of a single 0/sub 3/ absorption line at 1129.426 cm for N/sub 2/ pressures from 10 to 100 torr (O/sub 3/ pressure 3.16 torr). SO/sub 2/ line positions were used for wavelength calibration. Line shapes were interatively fitted to a Lorentz function. Results were delta (HWHM in MHz) 47.44 (+ or - 5.34) MHz + 1.730 (+ or - 0.088) MHz/torr *p(torr) with sigma 0.9897. This intercept compares well with the Doppler O/sub 3/ - O/sub 3/ broadened (at 3.16 torr) width of 44.52 Hz. This result in a HWHM line width of 0.44 cm atm at 760 torr and 285 K. The line strengths integrated over delta nu 0.55 cm were found to be N/sub 2/ pressure dependent.
- Research Organization:
- Old Dominion Univ., Norfolk, VA (USA)
- OSTI ID:
- 6422254
- Report Number(s):
- NASA-CR-168999
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
ABSORPTION SPECTRA
ABSORPTIVITY
CALIBRATION
CHALCOGENIDES
ELEMENTS
LASER SPECTROSCOPY
LASERS
LINE BROADENING
LORENTZ TRANSFORMATIONS
NITROGEN
NONMETALS
OPTICAL PROPERTIES
OXIDES
OXYGEN COMPOUNDS
OZONE
PHYSICAL PROPERTIES
PRESSURE DEPENDENCE
SEMICONDUCTOR DEVICES
SEMICONDUCTOR LASERS
SPECTRA
SPECTROSCOPY
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
TRANSFORMATIONS