Accession Number : ADA100978


Title :   Mjollnir Rotational Line Scan Diagnostics.


Descriptive Note : Final rept.,


Corporate Author : MATHEMATICAL SCIENCES NORTHWEST INC BELLEVUE WASH


Personal Author(s) : Klosterman,E L ; Cassady,P E


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a100978.pdf


Report Date : 19 May 1981


Pagination or Media Count : 50


Abstract : The rotational line scan diagnostic technique described in this report can be used to derive the time history of the rotational temperature, the ground state DF population and the population in the first excited state during the output pulse of an atmospheric pressure DF laser from measurements of gain/absorption on three adjacent rotational lines in the 1-0 vibrational band. A description of the theoretical foundations of this technique is given together with sample calculations for typical pulsed DF laser conditions. An experimental system using a low pressure cw probe laser has been assembled for application on the AFWK Mjollnir laser. The design, assembly, alignment and operation of this diagnostic system are described in detail. Within operational limitations imposed by the probe laser, the performance of the diagnostic system has been verified using a pulsed gain cell. (Author)


Descriptors :   *DIAGNOSIS(GENERAL) , *CHEMICAL LASERS , REACTION KINETICS , MOLECULAR VIBRATION , PULSED LASERS , POPULATION , GAIN , GROUND STATE , MOLECULAR ROTATION , ABSORPTION SPECTRA , SPECTRUM ANALYZERS , SPECTRAL LINES , COLLISION BROADENING , LINE SCANNING


Subject Categories : Lasers and Masers


Distribution Statement : APPROVED FOR PUBLIC RELEASE