Abstract
A method of producing an intense flash of mercury resonance radiation (2537 Å) was described and application to kinetic absorption spectroscopy was illustrated with a variety of experiments. A powerful pulse of microwave radiation was delivered via a radiating horn to a flash lamp situated at the exit of the horn. The reaction cell was located inside and coaxial with the flash lamp and, with the incident radiation transverse to the lamp, the discharge was naturally confined to the outer annulus. The maximum rate of absorption of resonance radiation in the inner reaction-cell was achieved when the lamp was filled with a He + N2 mixture. The production of free radicals in the central vessel was investigated by kinetic absorption spectroscopy.
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