"The fusion process recommended by Dr. Bussard takes boron-11 and fuses a proton to it, producing, in its excited state, a carbon-12 atom. This excited carbon-12 atom decays to beryllium-8 and helium-4. Beryllium-8 very quickly (in 10-13 s) decays into two more helium-4 atoms. This is the only nuclear-energy releasing process in the whole world that releases fusion energy and three helium atoms -- and no neutrons. This reaction is completely radiation free."

http://www.science.edu/TechoftheYear/TechoftheYear.htm

There's a nice vid on google video:-

http://video.google.com/videoplay?docid=1996321846673788606][url]http://video.google.com/videoplay?docid=1996321846673788606[/url]

Seems like they've pretty much got it worked out. Hope somone gives them the funding as the bush administration is doing their normal obstruction of real energy alternatives.