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Chemistry of barium released at high altitudes
The Journal of Physical Chemistry
Publication coats assisted by the Air Force Cambridge Research Laboratories Release of barium vapor at high altitude provides a useful geophysical tool by forming a visible tracer for motions of ions and neutrals in the ionosphere. The excitation, ionization, and oxidation of atomic barium released in sunlight between 100 and 200 km altitude is examined in this paper. Observed spectral measurements of resonance Ba and Sr atoms, excited Ba atoms, Ba ions, and BaO molecules provide the basis fordoi:10.1021/j100680a009 fatcat:odhwirk45bdedizy4ehbzxfr2e