Accession Number : ADA259221


Title :   Optical Measurements in Electric Fields


Descriptive Note : Final rept. 20 Sep 82-1 Sep 86,


Corporate Author : SYSTEMS RESEARCH LABS INC DAYTON OH RESEARCH APPLICATIONS DIV


Personal Author(s) : Goss, Larry P


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a259221.pdf


Report Date : May 1987


Pagination or Media Count : 55


Abstract : The results of a theoretical and experimental investigation of laser- based diagnostic techniques for the measurement of electric fields in discharges are presented. A theoretical assessment made of those techniques most likely to be successful in electric-field measurements under various plasma conditions is discussed. The three techniques identified and subsequently tested experimentally were polarization spectroscopy of H-atoms, optogalvanic spectroscopy of Rydberg states, and laser-induced fluorescence of the BC1 radical. The most successful demonstration of the electric-field measurement involved the optogalvanic technique because of the high sensitivity of the Rydberg states to electric fields. Electric field measurements were made on a hollow cathode in the range 1800 to 200 V/cm.... Stark effect, Electric fields, Plasmas, Laser-Induced fluorescence, Optogalvanic, Optical diagnostics, Polarization spectroscopy, Positive-Column discharge, Hollow-Cathode.


Descriptors :   *OPTICAL EQUIPMENT , *ELECTRIC FIELDS , MEASUREMENT , POLARIZATION , FLUORESCENCE , SENSITIVITY , HIGH SENSITIVITY , CATHODES , ATOMS , SPECTROSCOPY , LASER INDUCED FLUORESCENCE , DEMONSTRATIONS


Subject Categories : Optics
      Plasma Physics and Magnetohydrodynamics


Distribution Statement : APPROVED FOR PUBLIC RELEASE