Abstract:
A method is disclosed for drilling holes, or cutting of rock or glass with a corpuscular beam, of electrons or ions of high energy density, typically exceeding about 106 watts per square centimeter. The beam is projected into the atmosphere from the chamber in which it is generated. The surface being impinged by the beam may advantageously be under water. The particles of the beam may also have very high energy (accelerating voltage 1 million to 100 million volts) to produce a blasting effect under the surface of the material being disrupted.
Abstract:
A method and apparatus for regulating and determining the temperature of a heated cathode in an electron beam system to regulate the magnitude of the beam current both during operation and prior to turn on. This is accomplished by measuring the thermionic emission of a well defined area of the cathode, regardless of whether the electron beam is being drawn from the cathode, and utilizing this measured signal to control the temperature of the heated cathode.
Abstract:
A METHOD IS DISCLOSED FOR DRILLING HOLES, EXCAVATING AND/OR TUNNELING IN ROCKY TERRAIN OR CUTTING OR BREAKING UP ROCK OR GLASS WITH A CORPUSCULAR BEAM, OF ELECTRONS OR IONS OF HIGH ENERGY DENSITY, TYPICALLY EXCEEDING ABOUT 10**6 WATTS PER SQUARE CENTIMETER. THE BEAM IS PROJECTED INTO THE ATMOSPHERE FROM THE CHAMBER IN WHICH IT IS GENERATED. MOLTEN MATERIAL, FUMES AND DUST MAY BE BLASTED AWAY BY A STREAM OF GAS, WATER OR STEAM. THE SURFACE BEING IMPINGED BY THE BEAM MAY ADVANTAGEOUSLY BE UNDER WATER. THE PARTICLES OF THE BEAM MAY ALSO HAVE VERY HIGH ENERGY (ACCELERATING VOLTAGE ONE MILLION TO 100 MILLION VOLTS) TO PRODUCE A BLASTING EFFECT UNDER THE SURFACE OF THE MATERIAL BEING DISRUPTED.