Resolution and Frequency Calibration Performance of Beckman IR-9 Infrared Spectrophotometer
- 1 November 1974
- journal article
- research article
- Published by SAGE Publications in Applied Spectroscopy
- Vol. 28 (6) , 536-540
- https://doi.org/10.1366/000370274774331994
Abstract
Modifications affecting the resolution and frequency calibration capability of the Beckman IR-9 infrared spectrophotometer are described and discussed. Under favorable conditions these modifications enable the instrument to be calibrated with an absolute accuracy of 0.03 cm−1 or better; resolution is also improved so that spectral slitwidths may be reduced by approximately √2 over normal specifications. These results are illustrated with vibration-rotation spectra from NH3, CH4, and HBr.Keywords
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