Sony Corporation

Energy Sciences Inc.

Kenneth E Williams

William A Frutiger

A Stuart Denholm

P Michael Fletcher

Kenneth E Hall

An electron beam gun generates an electron beam directed at a target. The gun comprises electrodes for creating an electric field along the direction of beam travel and focusing coils for creating a magnetic field along the direction of beam travel. The electrodes include a plurality of members each having a beam-shaping aperture therein for passage of the beam substantially without interception of the electrons in the beam. The electrodes and focusing coils are disposed for accelerating electrons in the beam in non-parallel paths through the beam-shaping apertures and for converging the electrons in the beam in at least one cross-sectional dimension of the beam to minimize that dimension at the target.

Electron beam gun

A heater for a thermionic cathode for producing an electron beam includes a central wide and a hollow cylindrical conductor with the wire disposed coaxially thereof. The wire and the cylindrical conductor are electrically connected at one end of the heater and at the other end include means for connecting to a power source. Equal electrical currents thus flow in opposite directions in the wire and the cylindrical conductor so that the magnetic fields produced thereby tending to deflect the electron beam cancel each other.

Thermionic cathode heater

This disclosure is concerned with the use of fine line converged electron beams of high aspect ratio for effecting physical, chemical, mechanical and other changes in the surface of objects, and also volume effects, including applications, for example, to semiconductor and other materials surface modification technology, annealing, welding, etching, polishing, cutting, curing and other surface and volume alteration.

Growing community of inventors

Andover, MA, United States of America

Kenneth E Williams