A STOP SCAN INTERFEROMETER USED FOR TIME-RESOLVED FTIR EMISSION-SPECTROSCOPY

Journal article

This paper describes how a low-cost teaching interferometer has been modified for use as a time-resolved instrument to study the infrared vibrational chemiluminescence of the products from atom-radical reactions and molecular photodissociations. This technique allows the entire temporal evolution of the emission spectrum to be obtained from a single interferometric scan, with spectral spectral and temporal resolutions of 2 cm-1 and 3 μs respectively. Illustrative results are given for discharge-flow studies of laser initiated atom-radical reactions, where product emission from highly vibrationally excited CO2 and HF is observed, and for emission from vibrationally excited products of the infrared multiple-photon dissociation of halocarbon molecules.

Authors: Biggs, P; Hancock, G; Heard, D; Wayne, R

• Publication status: Published
• Journal: MEASUREMENT SCIENCE and TECHNOLOGY
• Volume: 1
• Issue: 7
• Pages: 630-636
• Publication date: 1990-07-01
• DOI: 10.1088/0957-0233/1/7/016
• EISSN: 1361-6501
• ISSN: 0957-0233
• Language: English