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| Number | Title | Issue Date |
| 7269940 | Ion engine grid arcing protection circuit An arcing protection circuit for the screen and accelerator grids of an ion thruster engine includes an impedance, which in one embodiment, is fixed, and in another, is variable, coupled in series between the accelerator grid of the engine and a current return path ... | 09/18/2007 |
| 7081711 | Inductively generated streaming plasma ion source A novel pulsed, neutralized ion beam source is provided. The source uses pulsed inductive breakdown of neutral gas, and magnetic acceleration and control of the resulting plasma, to form a beam. The beam supplies ions for applications requiring excellent control of ... | 07/25/2006 |
| 7038203 | Method for observing high-altitude neutral air and device for observing high-altitude neutral air Ion particles are discharged so as to be influenced by a magnetic field originated from the earth, and collided with high-altitude neutral air to generate high velocity neutral particles through charge exchange. The high velocity neutral particles are analyzed. The ... | 05/02/2006 |
| 6909764 | Method and apparatus for high-energy generation and for inducing nuclear reactions A system is provided for generating high-energy particles and for inducing nuclear reactions. The system includes a laser and for emitting a laser beam, an irradiation target for receiving the laser beam and producing high-energy particles, and a secondary target fo... | 06/21/2005 |
| 6891911 | Formation of a field reversed configuration for magnetic and electrostatic confinement of plasma A system and method for containing plasma and forming a Field Reversed Configuration (FRC) magnetic topology are described in which plasma ions are contained magnetically in stable, non-adiabatic orbits in the FRC. Further, the electrons are contained electrostatica... | 05/10/2005 |
| 6259090 | Supported thin foil stripper and simple non-obstructing power meter for a space based neutral particle beam system A thin foil stripper and simple non-obstructing power meter for a space based neutral particle beam system consisting of a panel of thin foils supported by resistance wires and mounted on a wheel or disk in such a manner that the surface used for strippin... | 07/10/2001 |
| 5272731 | Process and apparatus to increase plasma temperature in a continuous discharge fusion reactor The process for containing a deuterium gas plasma discharge includes providing a cylindrical zone having a cylinder axis; supplying D2 gas to the zone axially lengthwise of the zone and substantially tangentially relative to the zone and via mu... | 12/21/1993 |
| 5177358 | Solid stripper for a space based neutral particle beam system A solid state stripper for stripping H- to HO is provided that includes a very thin solid state material such as polyvinylidene chloride, mica, and cellophane that is moved at a predetermined speed in front of an accelerated beam of ... | 01/05/1993 |
| 5118950 | Cluster ion synthesis and confinement in hybrid ion trap arrays A cluster ion synthesis process utilizing a containerless environment to grow in a succession of steps cluster ions of large mass and well defined distribution. The cluster ion growth proceeds in a continuous manner in a plurality of growth chambers which... | 06/02/1992 |
| 5106570 | Intense negative ion source A method for generating a beam of negatively charged hydrogen ions is described which comprises the steps of providing a source of metal hydride, heating the hydride to extract either atomic hydrogen or negative hydrogen ions directly therefrom, directing... | 04/21/1992 |
| 5031503 | Electrostatic projectile accelerator apparatus and related method An electrostatic projectile accelerator apparatus and related method for accelerating an electrostatic projectile charged to a first polarity through a plurality of pairs of split plates. The pairs of split plates are alternately charged to the first pola... | 07/16/1991 |
| 4960990 | Non coherent photoneutralizer A non-coherent photoneutralizer that has a fluorescent light source for neutralizing a negative ion beam as it is passed through a housing in which the fluorescent light source is mounted.... | 10/02/1990 |
| 4894199 | Beam fusion device and method A fusion device provides for the reaction of atomic nuclei, preferably deuterons and tritons, to generate reaction products with kinetic energies convertible to useful energy. First and second sources of first and second positive ions provide such ions at... | 01/16/1990 |
| 4749857 | Process for the formation of high energy neutral atom beams by multiple neutralization and apparatus for performing the same Process and apparatus for forming high energy neutral atom beams by multiple neutralization. Following a first neutralization, the ions contained in the first neutral particle beam are separated by deflection by means of a quasi-achromatic magnetic double... | 06/07/1988 |
| 4654561 | Plasma containment device A plasma containment device for generating and sustaining a ball of plasma therein including an enclosure; a primary electromagnet for generating a primary magnetic field in said enclosure; gas jets positioned at terminal end portions of the primary magne... | 03/31/1987 |
| 4654183 | Production of intense negative hydrogen beams with polarized nuclei by selective neutralization of negative ions A process for selectively neutralizing H- ions in a magnetic field to produce an intense negative hydrogen ion beam with spin polarized protons. Characteristic features of the process include providing a multi-ampere beam of H- ions ... | 03/31/1987 |
| 4635855 | Method and apparatus for rapidly controlling the flow of gas A high speed gas valve (10) comprises an annular base member (14) having a plurality of plenums (18--18) into which a gas is admitted through a passage (42) in an overlying coverplate (16). Within each plenum is a conductive disc (26) which seals an orifi... | 01/13/1987 |
| 4617462 | Polarized internal target apparatus A polarized internal target apparatus with a polarized gas target of improved polarization and density achieved by mixing target gas atoms with a small amount of alkali metal gas atoms, and passing a high intensity polarized light source into the mixture ... | 10/14/1986 |
| 4596687 | Neutral particle beam intensity controller A neutral beam intensity controller is provided for a neutral beam generator in which a neutral beam is established by accelerating ions from an ion source into a gas neutralizer. An amplitude modulated, rotating magnetic field is applied to the accelerat... | 06/24/1986 |
| 4588955 | Transverse field focused system A transverse field focused (TFF) system for transport or acceleration of an intense sheet beam of negative ions in which a serial arrangement of a plurality of pairs of concentric cylindrical-arc electrodes is provided. Acceleration of the sheet beam can ... | 05/13/1986 |
| 4584473 | Beam direct converter A beam direct converter recovers the energy of incoming ion particles intermingled with neutral particles. An angular cylindrical collector of the direct converter has its lengthwise side substantially aligned with the flowing direction of a beam of neutr... | 04/22/1986 |
| 4584161 | Use of 3 He30 + ICRF minority heating to simulate alpha particle heating Neutron activation due to high levels of neutron production in a first heated deuterium-tritium plasma is substantially reduced by using Ion Cyclotron Resonance Frequency (ICRF) heating of energetic 3 He++ ions in a second deuterium... | 04/22/1986 |
| 4581195 | Negative hydrogen or deuterium ion source using semiconductor The disclosed negative ion source uses a solid-state element having a semiconductor portion, which source includes a region adapted to dissociate molecules of hydrogen or deuterium in said solid-state element by dissolution, another region adapted to conv... | 04/08/1986 |
| 4548782 | Tokamak plasma heating with intense, pulsed ion beams An intense, space-charge-neutralized, pulsed ion beam is used to heat a magnetically-confined plasma, such as tokamak plasma, by injecting the ion beam into the plasma along a trajectory that is generally tangential to the confining magnetic field. The in... | 10/22/1985 |
| 4506160 | Ion source apparatus A gas is introduced into a discharge chamber of an ion source apparatus, and a gas discharge is performed between a thermionic cathode and an anode. Ions are extracted from the plasma formed in this gas discharge by a grid electrode. The thermionic cathod... | 03/19/1985 |
| 4480185 | Neutral beam injector A neutral beam injector comprising a neutralizing cell for neutralizing charged particles, and a direct converter for recovering the energy of unneutralized charged particles passed through the neutralizing cell. The direct converter comprises a collector for ... | 10/30/1984 |
| 4439395 | Neutral beamline with improved ion energy recovery A neutral beamline employing direct energy recovery of unneutralized residual ions is provided which enhances the energy recovery of the full energy ion component of the beam exiting the neutralizer cell, and thus improves the overall neutral beamline eff... | 03/27/1984 |
| 4434131 | Neutral beamline with improved ion energy recovery A neutral beamline generator with unneutralized ion energy recovery is provided which enhances the energy recovery of the full energy ion component of the beam exiting the neutralizer cell of the beamline. The unneutralized full energy ions exiting the ne... | 02/28/1984 |
| 4395631 | High density ion source A source for a high density electrically neutral beam of combined positive and negative particles suitable for bombardment and heating of a pellet of nuclear fusion material to fusion temperature. A source mounted in a housing with a spherical substrate h... | 07/26/1983 |
| 4377773 | Negative ion source with hollow cathode discharge plasma A negative ion source of the type where negative ions are formed by bombarding a low-work-function surface with positive ions and neutral particles from a plasma, wherein a highly ionized plasma is injected into an anode space containing the low-work-func... | 03/22/1983 |
| 4363775 | Controlled nuclear fusion apparatus A fusion power generating device is disclosed having a relatively small and inexpensive core region which may be contained within an energy absorbing blanket region. The fusion power core region contains apparatus of the toroidal type for confining a high... | 12/14/1982 |
| 4361761 | Merged ion-electron particle beam for space applications A method and apparatus for merging electrons and ions in a neutralizer region where both are of equal intensity and velocity and directing the beam at a target to be destroyed. The region for merging the beams comprises a plurality of circular electrodes ... | 11/30/1982 |
| 4349505 | Neutral beamline with ion energy recovery based on magnetic blocking of electrons A neutral beamline generator with energy recovery of the full-energy ion ponent of the beam based on magnetic blocking of electrons is provided. Ions from a positive ion source are accelerated to the desired beam energy from a slightly positive potential... | 09/14/1982 |
| 4314879 | Production of field-reversed mirror plasma with a coaxial plasma gun The use of a coaxial plasma gun to produce a plasma ring which is directed into a magnetic field so as to form a field-reversed plasma confined in a magnetic mirror. Plasma thus produced may be used as a target for subsequent neutral beam injection or oth... | 02/09/1982 |
| 4314180 | High density ion source A source for a high density electrically neutral beam of combined positive and negative particles suitable for bombardment and heating of a pellet of nuclear fusion material to fusion temperature. A source mounted in a housing with a spherical substrate a... | 02/02/1982 |
| 4298798 | Method and apparatus for producing negative ions A method and apparatus are described for producing negative deuterium ions for use in controlled thermonuclear reactions such as fusion. Negative ions are obtained by bombarding the surface of an ionization electrode with positive ions and extracting nega... | 11/03/1981 |
| 4284952 | Neutral beam monitoring Method and apparatus for monitoring characteristics of a high energy neutral beam. A neutral beam is generated by passing accelerated ions through a walled cell containing a low energy neutral gas, such that charge exchange neutralizes the high energy ion... | 08/18/1981 |
| 4232244 | Compact, maintainable 80-KeV neutral beam module A compact, maintainable 80-keV arc chamber, extractor module for a neutral beam system immersed in a vacuum of | 11/04/1980 |
| 4125431 | Tandem mirror plasma confinement apparatus Apparatus and method for confining a plasma in a center mirror cell by use of two end mirror cells as positively charged end stoppers to minimize leakage of positive particles from the ends of the center mirror cell.... | 11/14/1978 |
| 4101765 | Means for counteracting charged particle beam divergence To counteract charge particle beam divergence, magnetic field-generating means are positioned along the edges of a charged particle beam to be controlled, such as to deflect and redirect particles tending to diverge from a desired beam direction. By selec... | 07/18/1978 |
