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Line parameters of HCl obtained by simultaneous analysis of spectra

1978; Elsevier BV; Volume: 20; Issue: 6 Linguagem: Inglês

10.1016/0022-4073(78)90029-8

1879-1352

Chun‐Liang Lin, E. Niple, John H. Shaw, William M. Uselman, Jack G. Calvert,

Water Quality Monitoring and Analysis

Abstract Line parameters of the 1-0 band of HCl have been retrieved from spectra of finite resolution (0.1 cm-1) obtained with a Fourier transform spectrometer which gives the spectral transmittance of the sample at intervals larger than the Lorentzian widths of the lines, by using a non-linear, least-squares method to analyze two spectra simultaneously. The accuracy of this technique is demonstrated by comparing the retrieved parameters with previously reported values. Line positions are obtained with a precision of 0.005 cm-1 and the intensities and widths agree within the estimated accuracy of 5%. Evidence of line shifts due to N2 perturbation has been obtained.