Plasma Based Chamber
I'm not sure if this goes here or not, it kind of involves a few different disciplines so if it's in the wrong place, please could a moderator move it or let me know where to post it.
The idea that I had and am still trying to flesh out, is of a spherical chamber. This chamber is lined with magnetic plates that force a central location to be null in magnetic terms. Now, into this chamber is pumped a pressurized mix of deuterium (from the top), and argon (from below). The pressure inside is first increased using only the pumping system, then the magnetic field is activated pushing the material even closer together. At the bottom, on the center of the chamber, radiation (preferably in the form of neutron radiation) is then directed into the churning mass of excited gases. This should ignite them to the point of plasma. Argon, when added to Deuterium will ignite at the speed of sound. Exhaust ports through a one way vent open vent the plasma through a magnetic relay system before being expunged in the directional exhaust thrusters. The magnetic relay system is a serious of magnets along with ion gathering cathodes running both parallel and perpendicular to the rotational flow of the plasma and should recharge the system like the alternator in a car, at the same time that the expulsion of the plasma would move a craft. So, I have asked three different physics professors here at my college and they say they see no reason why this couldn't work, I wanted to know what the engineers out there think.