Mentioned all over the place in the reports of the demos and in the video commentaries on the E-Cat. I'll try to locate a few links. But it'll be a while, as I've got to take my car in for its "routine service" visit in an hour, which will probably kill the entire morning. If you want to scrounge around in the meantime, the LENR/CANR.org website has news and links to the reports. There are also copies of the reports in the "Library" section.
They have this theory that it is ONLY through heavy proton or neutron bombardment that you can get fusion ~ real fusion ~ something you can stick your fingers in.
I have been quite startled at the number of people who claim to be trained in the Four Fundamental Forces of the Universe who did not read about The Weak Nuclear Force and "tunneling" ~ an otherwise commonly understood phenomenon that occurs because matter is energy, and visa versa!
Seriously guys, the smart people have been working over their descriptions of the Four Forces and how they work for decades and there are easy to understand websites that can readily enlighten almost anyone who can read.
I have a retarded friend I'm going to pass the Weak Force stuff past and see if he can deal with it. My guess is he can.