Improvements in a rapid scan ir spectrometer used for flash photolysis-kinetic spectroscopy are described. The scanning mechanism now regularly operates at a repetition rate of 20,000 scans/sec; the photolysis flash has a half-time of 7.5 µsec, with energy up to 2940 J, and at 1500 J it yields 5 × 1018 quanta/flash; the spectroscopic light source operates with a brightness temperature of 2400 K. The relationship between spectral resolution and scanning speed is quantitatively discussed.
R. M. Hexter and C. W. Hand, "Infrared Spectroscopy at 20,000 Scans per Second," Appl. Opt. 7, 2161-2165 (1968)