Here is another article about same:
http://spacescience.com/headlines/y2000/ast23aug_1m.htm

"When ions from the Sun blow past a comet, their strong positive charge attracts negatively-charged electrons from cometary atoms and molecules. In effect, the ions try to neutralize their own unbalanced charge by stealing electrons from the comet. Electrons that leap from neutral atoms to the passing solar wind ions emit x-rays as they cascade from high-energy to low-energy ionic orbits. This process, called a "charge exchange reaction," was first proposed in 1997 as a possible reason for cometary x-rays ." (My bold.)

This claim from a mainstream source is that charge-exchange-reaction was first proposed in 1997!

Really? Didn't Ralph Juergens, who proposed the Electric Sun model, also propose the corollary that cometary comas and tails are produced by an electrical exchange between the sun and a comet. I think so.