Class 376/326 - With laser

Subclass of Class 376 - Induced nuclear reactions: processes, systems, and elements
Definition: Subject matter wherein the structure or process to be combined
No. of patents: 25
Last issue date: 04/15/2003

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Number	Title	Issue Date
6549602	Incore piping section maintenance system of reactor An incore piping section maintenance system of a reactor comprises a maintenance system main body which is fixed to a maintenance target portion in a reactor pressure vessel or in the vicinity thereof to which a preventive-maintenance operation is execute...	04/15/2003
6259759	Incore piping section maintenance system of reactor An incore piping section maintenance system of a reactor comprises a maintenance system main body which is fixed to a maintenance target portion in a reactor pressure vessel or in the vicinity thereof to which a preventive-maintenance operation is execute...	07/10/2001
5809099	Laser-guided underwater wall climbing robot for reactor pressure vessel inspection An apparatus for inspection of a reactor pressure vessel uses a laser driven type underwater wall climbing robot guided by a laser pointer. The inspection apparatus uses a small and light underwater wall climbing robot for the quick and adequate inspectio...	09/15/1998
5790621	Process and apparatus for removing dust from nuclear fuel pellets by means of a laser beam The invention relates to a process for removing dust from at least one nuclear fuel pellet (7) having undergone a grinding operation, which has left on the pellet surface dust of the material from which said pellet is formed. The process comprises subject...	08/04/1998
5790620	Underwater laser processing method and apparatus An underwater laser processing method is carried out by irradiating, through a laser beam irradiation apparatus, a laser beam having a high output, a short pulse and a visible wavelength to a surface of a structure immersed in a water to improve residual ...	08/04/1998
5586137	Compact high efficiency electrical power source A compact fission reactor generates a flux of fission fragments, fission neutrons, and gamma-ray photons. The flux excites a noble element converter medium which produces light. Optical means are provided for focusing the light onto an array of photovolta...	12/17/1996
5425072	Method of heat treating a radioactive surface In a method of treating a surface 12 of an object 10 contaminated with radionuclides 14, a laser source 16 is directed at the surface 12 to apply a local area 18 of intense heat to the surface 12. The laser source 16 is arranged to pass in a raster manner...	06/13/1995
4976911	Nuclear reactivity control using laser induced polarization A control element for reactivity control of a fission source provides an atomic density of 3 He in a control volume which is effective to control criticality as the 3 He is spin-polarized. Spin-polarization of the 3 He aff...	12/11/1990
4971749	Nuclear excitation laser type intra-reactor neutron flux measuring system A nuclear excitation laser type intra-reactor neutron flux measuring system of this invention is comprised of a laser oscillator filled with a nuclear exciting gas such as 3 He, KrF or XeF, mounted on the tip of a control rod. The nuclear excit...	11/20/1990
4800566	Fusion pumped laser Apparatus is provided for generating energy in the form of laser radiation. A tokamak fusion reactor is provided for generating a long, or continuous, pulse of high-energy neutrons. The tokamak design provides a temperature and a magnetic field which is e...	01/24/1989
4683116	Nuclear reactor A nuclear reactor in which control rods are inserted in the thimbles of only certain of the fuel assemblies (which may be called controlled assemblies) in the core and the remainder of the assemblies (which may be called non-controlled assemblies) are pro...	07/28/1987
4505876	Nuclear heated and powered metal excimer laser A laser using heat and thermionic electrical output from a nuclear reactor in which heat generated by the reactor is utilized to vaporize metal lasants. Voltage output from a thermionic converter is used to create an electric discharge in the metal vapors...	03/19/1985
4414671	Collision laser Electromagnetic radiation (10) is provided in a gas mixture (12) including helium in the X(1) state and nitrogen in the Y(1) state. The helium is pumped to excite a high population density of its atoms from the X(1) state to the X(2) state; and photons (1...	11/08/1983
4398294	High power nuclear photon pumped laser A device for producing high power coherent radiation by using nuclear energy as the energy source to cause photons to be produced from a photon producing gas and in turn utilizing the photons to pump a laser gas to create a population inversion necessary ...	08/09/1983
4323808	Laser excited thermionic electric converter A laser excited thermionic electric converter is disclosed wherein an externally located heat source causes electrons to be boiled off an electron emissive surface interiorly positioned on one end wall of an evacuated cylindrical chamber. A grid having a ...	04/06/1982
4300106	Large volume multiple-path nuclear pumped laser A large volume multiple-path nuclear pumper laser which has improved characteristics over previous cylindrical nuclear pumped laser systems. Large volumes of gas are excited by using internal high reflectance mirrors that are arranged so that the optical ...	11/10/1981
4160956	Nuclear-pumped uranyl salt laser A direct nuclear radiation pumped laser consisting essentially of a uranyl salt with a UO2++ uranyl ion enriched in the U235 isotope sufficient to sustain a fission chain reaction, the uranyl ion being directly nuclear rad...	07/10/1979
4110703	Volumetric direct nuclear pumped laser A volumetric direct nuclear pumped laser has been developed in which the gas is a mixture of 3 He and a minority gas from the group of argon, krypton, xenon, chlorine and fluorine. The mixture of 3 He and the minority gas produces la...	08/29/1978
4075057	Non-equilibrium radiation nuclear reactor An externally moderated thermal nuclear reactor is disclosed which is designed to provide output power in the form of electromagnetic radiation. The reactor is a gaseous fueled nuclear cavity reactor device which can operate over wide ranges of temperatur...	02/21/1978
4023065	Method and apparatus for generating and utilizing a compound plasma configuration A method and apparatus for generating and utilizing a compound plasma configuration is disclosed. The plasma configuration includes a central toroidal plasma with electrical currents surrounded by a generally ellipsoidal mantle of ionized particles or ele...	05/10/1977
3983637	Process for drying encapsulated fissile and non-fissile bodies A process for removal of moisture from fissile and non-fissile bodies which are encapsulated in hollow rods comprising perforating the rod, subjecting the rod to a reduced pressure environment, filling the rod with a dehydrating reagent and adjusting the ...	10/05/1976
3967215	Laser reactor A device producing reactions in the chemical to thermonuclear range and beyond. Physical principles entail pressures, kinetic temperatures, and electromagnetic field strengths obtainable from convergent electromagnetic energy. Process converges closed ele...	06/29/1976
3961197	X-ray generator Apparatus and method for producing coherent secondary x-rays that are controlled as to direction by illuminating a mixture of high z and low z gases with an intense burst of primary x-rays. The primary x-rays are produced with a laser activated plasma, an...	06/01/1976
3955153	Ring laser for penetrating waves A ring laser for penetrating electromagnetic radiation such as X or gamma rays, using a pumping beam supplied by a primary lightwave or infrared laser. A member made of active material is illuminated by the beam, which has symmetry of revolution around it...	05/04/1976
3952263	Fission fragment excited laser system A laser system and method for exciting lasing action in a molecular gas lasing medium which includes cooling the lasing medium to a temperature below about 150 K and injecting fission fragments through the lasing medium so as to preferentially excite low ...	04/20/1976

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Class 376/326 - With laser