Observed barium emission rates

Details Observed barium emission rates Observed barium emission rates

Oct 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993jgr....9817491s&link_type=abstract

Journal of Geophysical Research, Volume 98, Issue A10, p. 17491-17500

Physics

Plasma Physics

2

Ionosphere: Active Experiments, Ionosphere: Ionization Mechanisms, Ionosphere: Ionosphere/Atmosphere Interactions, Space Plasma Physics: Charged Particle Motion And Acceleration

Scientific paper

The barium releases from the CRRES satellite have provided an opportunity for verifying theoretically calculated barium ion and neutral emission rates. Spectra of the five Caribbean releases in the summer of 1991 were taken with a spectrograph on board a U.S. Air Force jet aircraft. Because the line of sight release densities are not known, only relative rates could be obtained. The observed relative rates agree well with the theoretically calculated rates and, together with other observations, confirm the earlier detailed theoretical emission rates. The calculated emission rates can thus with good accuracy be used with photometric observations. It has been postulated that charge exchange between neutral barium and oxygen ions represents a significant source for ionization. If so, it should be associated with emissions at 4957.15 Å and 5013 Å, but these emissions were not detected.

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