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Sensitive F2 absorption diagnostic

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1 Author(s)
Spencer, Donald J. ; The Ivan A. Getting Laboratories, The Aerospace Corporation, Los Angeles, California 90245

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A sensitive F2 absorption diagnostic technique was developed by which a difference in absorption sensitivity of ΔI/I0=10-4 can be determined. This value corresponds to an F2 pressure–path‐length product of 0.215 Torr cm at 300 K. The method was applied to an HF (DF) chemical laser flow and resulted in measured average nozzle‐exit values (α) of from 0.4 to 0.5 from a totally dissociated plenum, indicating a large degree of nozzle wall recombination.

Published in:

Journal of Applied Physics  (Volume:49 ,  Issue: 7 )