A fusion chamber is provided with an inner energy envelope by a hollow laser beam which travels the length of the chamber. A light energy dispersion element disposed at the far end of the chamber reflects the light energy of the laser beam to the inner reflective walls of the chamber and back through the plasma.
A high-temperature plasma is surrounded with a laser-beam wall to aid in its confinement. When such a laser-beam wall is used in combination with a confining magnetic field acting on a plasma of nuclear fuel material, the confinement time of the plasma is increased sufficiently to produce useful energy and to act as an efficient neutron source.
