PERFORMANCE AND DIAGNOSTIC MEASUREMENTS OF A SUPERSONIC HCl CHEMICAL LASER

Authors
  1. Arnold, S.J.
  2. Foster, K.D.
  3. Snelling, D.R.
Corporate Authors
Defence Research Establishment Valcartier, Valcartier QUE (CAN)
Abstract
A supersonic purely chemical continuous-wave HCl laser is described in which nonequilibrium concentrations of atomic chlorine are generated by the branch-chain reaction of NO with ClO2. The ClO2 is injected into a stream of NO in helium immediately upstream of the throat of a slit nozzle. The reacting gases then expand as a free jet into a low-pressure region where HI is added to rapidly form vibrationally excited HCl. A maximum HCl multiline output power of 35 W is obtained, which represents a chemical efficiency of approximately 4.5% based on the total exothermicity of the pumping reaction and the limiting flow rate of HI. An efficient technique for visualizing the flow in the expanded region is described. The technique is based on the visible chemiluminescence resulting from the addition of H2S to the NO/ClO2 reaction system.
Date of publication
01 Jan 1979
Number of Pages
6
Reprinted from
J of Applied Physics, vol 50, no 3, pt 1, 1979, p 1189-1194
DSTKIM No
79-02974
CANDIS No
87303
Format(s):
Originator's fiche received by DSIS;Hardcopy

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