"An atom can become ionized by the absorption of light.  The atom of barium is particularly easy to ionize, because its outermost electron is very loosely bound.  If a mass of barium is vaporized in space, producing a barium cloud, much of the barium becomes ionized by sunlight within less than a minute.  The cloud then moves in response to electric forces in space, and can be used to study the electrical field in space."  http://www-istp.gsfc.nasa.gov/Education/wposion.html

Reference to Barium in the  HAARP patent report:

"It has also been proposed to release large clouds of barium in
the magnetosphere so that photo ionization will increase the cold
plasma density, thereby producing electron precipitation through
enhanced whistler-mode interaction."  http://www.carnicom.com/xray1.htm 

CHEMTRAILS and ELECTROMAGNETISM    Transcript of Jeff Rense Interview with Clifford CARNICOM 

Barium Cloud Striations

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