Oak Ridge National Laboratory connected nuclear propulsion fusion Bussard worked Project Rover Los Alamos NAC A evolved NERVA nuclear thermal propulsion.

Bussard ramjet works Earth trans medium hydrogen abundant atmosphere water.

Bussard interstellar ramjet collects interstellar hydrogen electromagnetic scoop hydrogen fusion drive.

Polywell fusion device combines electrostatic magnetic confinement magnetic cusp fields magnetic mirror magnetic bubble.

Polywell magnetic coils arranged faces cube producing cusp regions edges corners high plasma pressures high beta effect.

Polywell virtual cathode negative electric potential formed purely electrons avoiding collisions associated energy losses.

Tokamak fusion tactical political organizational lever large budget preserving project rather power producing struggle confine neutral plasmas crippling losses.

Whitmer proposed catalyzed ramjet carries trace amounts carbon nitrogen oxygen.