Self- and air-broadened cross sections of ethane (C2H6) determined by frequency-stabilized cavity ring-down spectroscopy near 1.68 µm

Published

March 17, 2015

Author(s)

Zachary Reed, Joseph T. Hodges

Abstract

The absorption spectrum of ethane was measured by frequency-stabilized cavity ring-down spectroscopy over the wave number range 5950-5967 cm-1. Spectra are reported for both pure ethane acquired at pressures near 3 Pa and ethane in air at pressures ranging from 666 Pa to 101.3 kPa. Absorption cross sections are reported with a spectrum sampling period of 109 MHz and frequency resolution of 200 kHz. We find that the absorption cross sections measured at low pressure vary significantly from existing Fourier transform spectroscopy measurements whereas higher pressure data are in close agreement with literature values. The application of this spectral region for detection of ethane in the atmosphere is also discussed.

Citation

Journal of Quantitative Spectroscopy and Radiative Transfer

Pub Type

Journals

Download Paper

https://doi.org/10.1016/j.jqsrt.2015.03.010

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Keywords

ethane, methane, greenhouse gas, cavity ring-down spectroscopy

Citation

Reed, Z. and Hodges, J. (2015), Self- and air-broadened cross sections of ethane (C2H6) determined by frequency-stabilized cavity ring-down spectroscopy near 1.68 µm, Journal of Quantitative Spectroscopy and Radiative Transfer, [online], https://doi.org/10.1016/j.jqsrt.2015.03.010, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=917132 (Accessed April 26, 2024)