Related Experiment Video
Updated: Jun 15, 2026

Infrared Degenerate Four-wave Mixing with Upconversion Detection for Quantitative Gas Sensing
Published on: March 22, 2019
Nitric acid vapor line parameters measured by CO laser transmittance
Abstract:
Transmittance curves on pure nitric acid vapor have been determined at CO laser frequencies of 1661.8833 cm(-1), 1693.9957 cm(-1), and 1711.6199 cm(-1). Voigt profile analyses for the first and third frequencies give, respectively, alpha = (2.02 +/- 0.72) x 10(-4) Torr(-1) cm(-1), Delta = (1.63 +/- 0.33) x 10(-3) cm(-1) , E(nu(o)) = (0.668 +/- 0.302) X 10(-2) Torr(-1) cm(-1); alpha = (8.95 +/- 0.27) x 10(-4) Torr(-1) cm(-1), Delta = (1.64 +/- 0.33) x 10(-3) cm(-1), E(nu(o)) = 0.327 +/- 0.140 Torr(-1) cm(-1). Here alpha is the broadening parameter, Delta the frequency offset, and E(nu(0)) the extinction coefficient at line center in the Doppler region. Application of the Galatry profile gives the same results as well as a self-diffusion coefficient consistent with the value 0.057 cm(2)/sec from kinetic theory. Finally, the foreign gas broadening parameter with respect to nitrogen is determined as B = 0.997 +/- 0.245 at 1661.8833 cm(-1) and B = 5.91 +/- 0.78 at 1711.6199 cm(-1) .
More Related Videos
09:40Measurement and Analysis of Atomic Hydrogen and Diatomic Molecular AlO, C2, CN, and TiO Spectra Following Laser-induced Optical Breakdown
Published on: February 14, 2014
08:25Measuring Nitrite and Nitrate, Metabolites in the Nitric Oxide Pathway, in Biological Materials using the Chemiluminescence Method
Published on: December 25, 2016
Related Concept Videos
Atomic Absorption Spectroscopy: Atomization Methods
Atomic Absorption Spectroscopy: Instrumentation
The atomizer used in AAS can be either a flame atomizer or an...
Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation
There are three main types of inductively coupled plasma atomic emission spectroscopy (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used.
Atomic Absorption Spectroscopy: Radiation and Light Sources
Two common narrow-range 'line' sources used in AAS are hollow-cathode lamps (HCLs) and...
Raman Spectroscopy Instrumentation: Overview
The monochromatic laser source, typically using visible or near-infrared radiation, generates a highly focused beam of light. This light interacts with the molecules of the sample, scattering some of the light. Liquid and gaseous samples are usually tested in ordinary glass capillaries, while solids can be analyzed as powders packed in capillaries or as potassium...
Atomic Emission Spectroscopy: Lab