Spectroscopy based on reflection-absorption.
Notes: - RAIRS allows improved discrimination between species at the surface and those in the bulk.
- RAIRS is most sensitive at metal surfaces with grazing incidence.
- RAIRS is usually employed with the sample in a vacuum or gas.
- RAIRS may be employed with polarization modulation to minimize background absorption.
Source:
PAC, 2020, 92, 1781. 'Glossary of methods and terms used in surface chemical analysis (IUPAC Recommendations 2020)' on page 1792 (https://doi.org/10.1515/pac-2019-0404)