Neptune and back in 2 weeks

I just finished reading an interview with Paul A. Czysz professor emeritus of Aeronautical Engineering at St. Louis University. In the article, which is going to take me a while to verify, Czysz talks about Russian research into nuclear propulsion for spacecraft which by 2050 will allow for manned spaceflights to Pluto or Neptune with flight times measured in weeks instead of years.
By using some sort of MHD (magnetohydrodynamics) propulsion system with almost no “fuel” accelerating/decelerating at 1g a manned mission to Pluto could have a roundtrip time of slightly less than 1 month.
Professor Czysz also claims that Russian expertise in this field of research is 35 years ahead of American research. Then again Vladimir Putin claims Russian nanotechnology is a multi-billion dollar industry. I was able to find a soviet designed space plane based on the super-extra-top-secret Aurora space plane which uses what must be an early design of what Czysz mentions.
Importantly, the propulsion system relies on the Lorentz force like an ion engine does but does not shoot out ionized atoms. Instead it appears that the Russians are wrangling the alpha particle radiation of the reactor to provide thrust for the craft.
Thinking and visualizing this sort of system brings me back to military radar equipment, traditional UFO designs and the like. How do you direct alpha particles? Can you send them out from a flat or slightly curved surface? What does this mean as far as good old radiation poisoning goes? What “waste” particles would be best for propulsion?
In any event, this interview doubles my desire to learn more about MHD and nuclear physics.