Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group
  • Applied Spectroscopy
  • Vol. 48,
  • Issue 12,
  • pp. 1461-1467
  • (1994)

Near-Infrared Molecular Emission from a Gas Fountain

Not Accessible

Your library or personal account may give you access

Abstract

An electrothermal fountain is used to heat gas-phase samples in the range of 300 to 400°C in order to observe their near-infrared (NIR) emissions. In conjunction with the fountain, a ⅛-m Ebert monochromator and an uncooled PbS detector are shown to be sufficiently sensitive for recording the NIR fingerprints of CH<sub>4</sub>, CO<sub>2</sub>, N<sub>2</sub>O, and C<sub>2</sub>H<sub>6</sub> At fountain temperatures of approximately 400°C, the molecular emission is confined to the long wavelength NIR region (1600-2500 nm) and yields limits of detection in the range of 4 to 10% v/v (3-10 mg/s). Reproducibilities have relative standard deviations of 3.0%. The calibration curves for the gases examined in this study have small linear dynamic ranges (factors of 2 to 10) and exhibit some degree of upward curvature. Ramifications of the application of NIR molecular emission spectroscopy to the qualitative and quantitative analyses of mixtures are discussed.

PDF Article
More Like This
Sound emission from the gas of molecular superrotors

A. A. Milner, A. Korobenko, and V. Milner
Opt. Express 23(7) 8603-8608 (2015)

Infrared Emission from a Pressure-Modulated Gas*

Richard R. Patty and Dudley Williams
J. Opt. Soc. Am. 52(5) 543-545 (1962)

Near-infrared light emission from Si-rich oxynitride nanostructures

Zewen Lin, Rui Huang, Yanqing Guo, Chao Song, Zhenxu Lin, Yi Zhang, Xiang Wang, Jie Song, Hongliang Li, and Xintang Huang
Opt. Mater. Express 4(4) 816-822 (2014)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved