Patents by Inventor Russell M. Kulsrud

Russell M. Kulsrud 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: 4065351
    Abstract: This invention provides a poloidal divertor for stacking counterstreaming ion beams to provide high intensity colliding beams. To this end, method and apparatus are provided that inject high energy, high velocity, ordered, atomic deuterium and tritium beams into a lower energy, toroidal, thermal equilibrium, neutral, target plasma column that is magnetically confined along an endless magnetic axis in a strong restoring force magnetic field having helical field lines to produce counterstreaming deuteron and triton beams that are received bent, stacked and transported along the endless axis, while a poloidal divertor removes thermal ions and electrons all along the axis to increase the density of the counterstreaming ion beams and the reaction products resulting therefrom. By balancing the stacking and removal, colliding, strong focused particle beams, reaction products and reactions are produced that convert one form of energy into another form of energy.
    Type: Grant
    Filed: March 25, 1976
    Date of Patent: December 27, 1977
    Assignee: The United States of America as represented by the United States Energy Research and Development Administration
    Inventors: Daniel L. Jassby, Russell M. Kulsrud
  • Patent number: H446
    Abstract: A method of controlling the reaction rates of the fuel atoms in a fusion reactor comprises the step of polarizing the nuclei of the fuel atoms in a particular direction relative to the plasma confining magnetic field. Fusion reaction rates can be increased or decreased, and the direction of emission of the reaction products can be controlled, depending on the choice of polarization direction.
    Type: Grant
    Filed: April 11, 1986
    Date of Patent: March 1, 1988
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Russell M. Kulsrud, Harold P. Furth, Ernest J. Valeo, Maurice Goldhaber
  • Patent number: H936
    Abstract: The plasma column in a stellarator is compressed and expanded alternatively in minor radius. First a plasma in thermal balance is compressed adiabatically. The volume of the compressed plasma is maintained until the plasma reaches a new thermal equilibrium. The plasma is then expanded to its original volume. As a result of the way a stellarator works, the plasma pressure during compression is less than the corresponding pressure during expansion. Therefore, negative work is done on the plasma over a complete cycle. This work manifests itself as a back-voltage in the toroidal field coils. Direct electrical energy is obtained from this voltage. Alternatively, after the compression step, the plasma can be expanded at constant pressure.The cycle can be made self-sustaining by operating a system of two stellarator reactors in tandem. Part of the energy derived from the expansion phase of a first stellarator reactor is used to compress the plasma in a second stellarator reactor.
    Type: Grant
    Filed: September 25, 1986
    Date of Patent: July 2, 1991
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Darwin D. Ho, Russell M. Kulsrud