Electron Impact Excitation of H Polarization of Balmer Alpha.
Abstract
A special microwave source is used to produce a beam of highly dissociated hydrogen. This is then crossed with an electron beam and the resulting radiation is observed in a direction orthogonal to both beams using a cooled photomultiplier, narrow band filter combination with a polarization analyzer. The dissociation fraction is determined by separate measurements of the molecular hydrogen emissions in the VUV spectral region. Polarization data are obtained from threshold to 200 eV and are in very good agreement with unpublished CCC and RMPS calculations. Earlier measurements of the polarization of Balmer alpha, produced in dissociative excitation of H2 are confirmed and extended. * Research supported by the Natural Sciences and Engineering Research Council of Canada.
- Publication:
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APS Division of Atomic, Molecular and Optical Physics Meeting Abstracts
- Pub Date:
- June 2000
- Bibcode:
- 2000APS..DMP..L954A