Logo PTB

Multi-line, multi-spectrum fitting of complete molecular vibrational bands in the IR spectrum: EUMETRISPEC 2

01.10.2019

The functionality of the data evaluation procedures of the FT-facility consisting of two high resolution FT-spectrometers was extended. Now, line parameters, like line position and intensity, pressure shift and broadening, and further coefficients of higher order effects (Ha-Tran-profile) can be determined from the spectrum, but also the gas temperature and the amount fraction (concentration) of the molecular species. Thereby whole bands consisting of many individual, spectrally resolved rotational-vibrational transitions are fitted, evaluated and a series of spectra measured at different gas pressures are fitted simultaneously. Using this code, we processed HCl, CO2 and N2O spectra.

Contact

Head of Press and Information Office

Dr. Dr. Jens Simon

Phone: +49 531 592-3005
Email:
jens.simon(at)ptb.de

Address

Physikalisch-Technische Bundesanstalt
Bundesallee 100
38116 Braunschweig