Patents by Inventor George Sargent Janes

George Sargent Janes has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4107537
    Abstract: Method and apparatus for impact ionization of particles excited with isotopic selectivity, particularly for use in a system of uranium isotope separation and enrichment. Efficient impact ionization is achieved by first selectively exciting vaporized particles of the desired isotope in a beam of finely tuned laser radiant energy. The energies of the interacting photons are selected to produce a total energy shift during excitation which is slightly less than the ionization energy for the selected isotope. The excited isotope will thus be raised to an excitation level only slightly below the ionization level. This level is selected to permit efficient ionization, particle collisional ionization, between energetic particles in the uranium vapor environment and the highly excited particles of the desired isotope type.
    Type: Grant
    Filed: October 12, 1976
    Date of Patent: August 15, 1978
    Assignee: Jersey Nuclear-Avco Isotopes, Inc.
    Inventors: Harold K. Forsen, George Sargent Janes, Richard H. Levy
  • Patent number: 4038549
    Abstract: In a technique for isotope enrichment a system for selectively exciting increased amounts of one isotope type in an environment of plural isotope types by the application of excitation energy at a plurality of frequencies which selectively excite the one isotope from its ground energy level and one or more typically low-lying excited levels.
    Type: Grant
    Filed: June 8, 1973
    Date of Patent: July 26, 1977
    Assignee: Jersey Nuclear-Avco Isotopes, Inc.
    Inventors: George Sargent Janes, Richard H. Levy
  • Patent number: 4023038
    Abstract: A system employing multiple, upper excitation levels in a technique for isotopically selective ionization to improve the ionization efficiency. In a technique which employs laser radiation to excite particles with isotopic selectivity, excitation is produced to a plurality of excited states below the ionization level with the result of increasing the number of available excited particles for ionization and thereby increasing the ionization cross-section for improved system efficiency.
    Type: Grant
    Filed: September 19, 1974
    Date of Patent: May 10, 1977
    Assignee: Jersey Nuclear-Avco Isotopes, Inc.
    Inventors: George Sargent Janes, Charles T. Pike
  • Patent number: 4009391
    Abstract: Frequency selective means, particularly for use in uranium enrichment by laser induced isotopically selective ionization to suppress unwanted lasing of the excited uranium medium. The frequency selective means, such as filters, are placed at intervals in a column of laser illuminated uranium vapor and are transmissive to the illuminating laser frequencies but nontransmissive to frequencies at which population inversions exist in the excited uranium. The filters limit the path length and correspondingly the gain in the excited uranium to prevent high intensity lasing by the uranium itself.
    Type: Grant
    Filed: June 25, 1974
    Date of Patent: February 22, 1977
    Assignee: Jersey Nuclear-Avco Isotopes, Inc.
    Inventors: George Sargent Janes, Richard H. Levy, Lawrence A. Levin
  • Patent number: 4000421
    Abstract: In uranium enrichment, an electrode structure of thin, tensioned, parallel wires for use in applying an electric field to a region of a flowing uranium plasma including selectively ionized particles in order to accelerate the ionized particles for separate collection without interfering with the motion of neutral particles.
    Type: Grant
    Filed: September 30, 1974
    Date of Patent: December 28, 1976
    Assignee: Jersey Nuclear-Avco Isotopes, Inc.
    Inventors: George Sargent Janes, John Philip Dotson
  • Patent number: 4000423
    Abstract: An electron beam vapor source for use in laser enrichment of uranium and providing fast response intermittent vaporization to permit interruption of the enrichment process without wasting vapor or requiring long term reheating.
    Type: Grant
    Filed: December 5, 1974
    Date of Patent: December 28, 1976
    Assignee: Jersey Nuclear-Avco Isotopes, Inc.
    Inventors: George Sargent Janes, Leonard N. Litzenberger, Donald F. Twombly
  • Patent number: 3996469
    Abstract: A floating mass or matrix for use in the melt of an electron beam vapor source to permit a wide latitude of evaporant level without necessary replenishment while at the same time reducing convective currents in the melt.
    Type: Grant
    Filed: January 6, 1975
    Date of Patent: December 7, 1976
    Assignee: Jersey Nuclear-Avco Isotopes, Inc.
    Inventor: George Sargent Janes
  • Patent number: 3944825
    Abstract: In a system for isotope enrichment, method and apparatus for separating particles of one isotope type from an environment containing particles of plural isotope types by ionizing the particles of said one isotope type and imparting to the electrons released from the ionized particles an energy substantially in excess of the thermal or background energy of the environment whereby these super energetic electrons expand away from the environment in the company of the corresponding ionized particles or trajectories substantially different from those of the remaining particles in the environment to permit separate collection of the particles of the one isotope type.
    Type: Grant
    Filed: February 2, 1973
    Date of Patent: March 16, 1976
    Assignee: Jersey Nuclear-Avco Isotopes, Inc.
    Inventors: Richard H. Levy, George Sargent Janes
  • Patent number: 3939354
    Abstract: In a system for isotope separation, method and apparatus empolying crossed-field MHD particle accelerating techniques for collecting ions of a desired isotope after selective ionization of that isotope. In the plasma of electrons and selectively ionized atoms which results from selective isotope ionization, the ions are collected by inducing a circulation of the plasma electrons to provide a JXB relationship for MHD acceleration of the ions. The electron circulation enhances penetration of the plasma by the accelerating electric field and avoids the generation of large Hall voltages within the system as well as reducing the required magnitude of electrode currents.
    Type: Grant
    Filed: February 2, 1973
    Date of Patent: February 17, 1976
    Assignee: Jersey Nuclear-Avco Isotopes, Inc.
    Inventor: George Sargent Janes
  • Patent number: 3935451
    Abstract: Method and apparatus for separating selectively ionized particles of one isotope type from the background environment of charged and neutral particles. In particular, a particle flow is generated which contains neutral particles of plural isotope types, as well as a number of ions of the various isotope types. It is desired to selectively ionize and separately collect only those particles of one isotope type and for this purpose, an acceleration is produced in the ions of the background environment prior to selective ionization of the desired isotope particles. After selective ionization, a further acceleration, in an opposite direction, is produced upon the charged particles which results in a deflection of the selectively ionized particles towards collection surfaces and restores to generally normal flow velocity and charge distribution, the ions from the background environment.
    Type: Grant
    Filed: September 7, 1973
    Date of Patent: January 27, 1976
    Assignee: Jersey Nuclear-Avco Isotopes, Inc.
    Inventor: George Sargent Janes