Accession Number : ADA009853


Title :   HF Chain Reaction Laser


Descriptive Note : Final technical rept.


Corporate Author : UNITED TECHNOLOGIES RESEARCH CENTER EAST HARTFORD CT


Personal Author(s) : Boedeker, L. R. ; Verdieck, J. F. ; Hall, R. J.


Full Text : http://www.dtic.mil/dtic/tr/fulltext/u2/a009853.pdf


Report Date : MAY 1975


Pagination or Media Count : 60


Abstract : The report describes a thermally initiated F2/H2 flow tube reactor experimental program to provide clearly defined experimental results via emission spectroscopy diagnostics on vibrational population levels attained in the cw H2/F2 chain reaction for comparison with theory. Highly dilute, subsonic, near room temperature reaction conditions in the 1-10 torr pressure region have been studied which result in development of the chain over flow tube distances of about 1 meter, much larger than mixing length. An examination of the dominant kinetics was conducted via the accumulation of spectral and uv data over a range of key experimental parameters including distance from the H2 injector, x; H2 flow; F2 flow pressure; dissociator temperature, and O2 additive flow. Overtone spectra were obtained. The experimental results from the flow tube on high lying vibrational population distributions ovserved at 5 torr have been compared with predictions of the 1-D scheduled mixing analytical model in a manner which attempts to identify potential key areas of kinetic uncertainty with the chain.


Descriptors :   *CHAIN REACTIONS , *CHEMICAL LASERS , MATHEMATICAL MODELS , REACTION KINETICS , EMISSION SPECTRA , ENERGY TRANSFER , HYDROGEN , FLUORINE , ABSORPTION SPECTRA , DISSOCIATION , GAS FLOW , HYDROGEN FLUORIDE.


Subject Categories : LASERS AND MASERS
      ATOMIC AND MOLECULAR PHYSICS AND SPECTROSCOPY


Distribution Statement : APPROVED FOR PUBLIC RELEASE