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

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

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

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

Whitmer proposed catalyzed ramjet carries trace amounts carbon nitrogen oxygen.

Plasma sheath solves drag issues laser pre ionize air plasma bubble eliminates drag.

Bussard ramjet works Earth trans medium hydrogen abundant atmosphere water.

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