Sorry, but your idea is an old one. NASA’s JPL funded some of Lerner’s research a few years ago.
I found this in the archives:
University of Illinois Space Propulsion
by Admin on Jul 25, 2006 at 09:37 PM
University of Illinois, Air Force Researchers Release Study of Focus Fusion for Space Propulsion.
In a technical paper published last year, researchers from Universe of Illinois and from the Air Force Research Laboratory have described how a dense plasma focus device using hydrogen-boron fuel, (what we call