CH FREE RADICALS DETECTED BY INFRARED LASER MAGNETIC RESONANCE

Abstract
CH radicals in an oxyacetylene flame have been detected by a magnetic resonance absorption method, with a water‐vapor laser as the source oscillator at a frequency of 2.5 THz. The absorption spectrum is identified with the pure rotational transition, J, K=(5/2, 2) → (7/2, 3) at a wavelength of 118. 6 μm.