Abstract

Apparatus for the measurement of the band absorption of gases at pressures up to 10 atmos and temperatures up to 1400 K is described. An optical path of 15 in. is maintained with an accuracy of 1% by a nozzle seal system which allows measurements to be made without the use of windows in the high temperature zone. Use of KBr windows for the pressure seal permits measurements to 23 μ.

© 1960 Optical Society of America

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