High resolution spectra of 13C ethane and propane isotopologues photoacoustically measured using interband cascade lasers near 3.33 and 3.38 µm, respectively. (April 2019)

• Record Type: Journal Article
• Authors: Loh, Alain; Wolff, Marcus
• Is Part Of: Journal of quantitative spectroscopy & radiative transfer. Volume 227(2019)
• Page Start: 111
• Page End: 116
• Publication Date: 2019-04
• Subjects: Ethane -- Propane -- 13C-isotopologues -- Photoacoustic spectroscopy -- Infrared spectra -- Interband cascade laser; Spectrum analysis -- Periodicals; Radiation -- Periodicals; Analyse spectrale -- Périodiques; Rayonnement -- Périodiques; Radiation; Spectrum analysis; Periodicals; 543.0858
• DOI: 10.1016/j.jqsrt.2019.01.027
• Languages: English
• ISSNs: 0022-4073

Abstract

Highlights: High resolution absorption spectra of 12 CH3 - 13 CH3 and 13 CH3 - 13 CH3 around 3.33 µm. High resolution absorption spectra of 12 CH3 - 12 CH2 - 13 CH3 around 3.38 µm. Photoacoustic measurements using cw, TEC, DFB interband cascade lasers. Abstract: We report measurements of short-chained hydrocarbon isotopologues using two continuous wave (cw), thermoelectrically cooled (TEC), distributed feedback interband cascade lasers (DFB-ICLs) around 3.33 and 3.38 µm. The high resolution absorption spectra of 12 CH3 - 13 CH3, 13 CH3 - 13 CH3 and 12 CH3 - 12 CH2 - 13 CH3 were recorded at room temperature and atmospheric pressure for concentrations of approximately 0.1% in nitrogen using photoacoustic spectroscopy (PAS). For calibration and analysis purposes the 13 C spectra as well as ethane and propane spectra at natural abundance are compared to respective FTIR spectra originating from the HITRAN database and results of a previous study. The high resolution absorption spectra will allow isotopologue-sensitive spectral analyses of ethane and propane in this spectral region and may be used as reference data for applications from atmospheric and planetary research to natural gas exploration.