The N 2  pressure broadening coefficient of the J = 1 ← 0 transition of ¹H 35 Cl measured by tunable far infrared (TuFIR) spectroscopy | Zendy

Bryant C. H. | Zendy; Davies P. B. | Zendy; Sears T. J. | Zendy

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The N 2 pressure broadening coefficient of the J = 1 ← 0 transition of ¹H 35 Cl measured by tunable far infrared (TuFIR) spectroscopy

Author(s) -

Bryant C. H.,

Davies P. B.,

Sears T. J.

Publication year - 1996

Publication title -

geophysical research letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.007

H-Index - 273

eISSN - 1944-8007

pISSN - 0094-8276

DOI - 10.1029/96gl01766

Subject(s) - torr , sideband , analytical chemistry (journal) , spectroscopy , infrared , voigt profile , atomic physics , infrared spectroscopy , materials science , spectrometer , nuclear magnetic resonance , physics , chemistry , optics , spectral line , microwave , chromatography , quantum mechanics , astronomy , thermodynamics

A tunable far infrared (TuFIR) laser sideband spectrometer has been used to determine the N 2 pressure broadening coefficient of the lowest rotational transition of ¹H 35 Cl between 0 and 1.8 Torr at room temperature (298 K). The parameters defining a Voigt lineshape were fitted to the J = 1 ← 0 transition using a Levenberg‐Marquardt non‐linear least squares fitting routine. The average N 2 broadening coefficient of the three components was determined to be 4.10(10)/(MHz/Torr), 0.104(2)/(cm −1 /atm).

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