+ Visit NASA.gov + Contact NASA   + Home Select Search Field * All Report - Patent Number Abstract *Accession Number *NASA Center *Author NameDocument IDKeywordsPublication Date *Title * Find Results With All of the words At least one of the words Enter Search Term  within returned results    Search Tips: Use only the fields with * to search NIX collection. Enclose terms in double quotation marks (") to search for exact phrases, ie: "space shuttle". NOTE: Commas and dashes are removed from search term by search engine. Select Reset Search button to start a new search. See Help for more tips. + NASA Center + Publication Year + Availability Options Selected Navigations: [Remove] Item/Media Type > Patent [x] Subject > P-R > Plasma Physics [x] Sort results by: NASA Center | Date Added to NTRS | Publication Year There are a total of 13 record(s) matching your query. Sorted by: Date Added To NTRS in Descending order 1 2 Next  Large area plasma source Abstract: An all permanent magnet Electron Cyclotron Resonance, large diameter (e.g., 40 cm) plasma source suitable for ion/plasma processing or electric propulsion, is capable of producing uniform ion current densities at its exit ... NASA Center: NASA (non Center Specific) Publication Year: 2008 Added to NTRS: 2009-01-22 Document ID: 20090002654 Method for generation of tunable far infrared radiation from two-dimensional plasmons Abstract: Tunable far infrared radiation is produced from two-dimensional plasmons in a heterostructure, which provides large inversion-layer electron densities at the heterointerface, without the need for a metallic grating to couple ... NASA Center: NASA (non Center Specific) Publication Year: 1989 Added to NTRS: 2008-07-24 Document ID: 20080012283 Slotted antenna waveguide plasma source Abstract: A high density plasma generated by microwave injection using a windowless electrodeless rectangular slotted antenna waveguide plasma source has been demonstrated. Plasma probe measurements indicate that the source could be ... NASA Center: NASA (non Center Specific) Publication Year: 2007 Added to NTRS: 2008-04-01 Document ID: 20080009435 Compact plasma accelerator Abstract: A compact plasma accelerator having components including a cathode electron source, an anodic ionizing gas source, and a magnetic field that is cusped. The components are held by an electrically insulating body having a ... NASA Center: NASA (non Center Specific) Publication Year: 2004 Added to NTRS: 2008-02-08 Document ID: 20080007439 Method for defect free keyhole plasma arc welding Abstract: A plasma arc welding process for welding metal of increased thickness with one pass includes operating the plasma arc welding apparatus at a selected plasma gas flow rate, travel speed and arc current, to form a weld having ... NASA Center: Marshall Space Flight Center Publication Year: 1993 Added to NTRS: 2008-01-30 Document ID: 20080004268 Plasma-assisted microwave processing of materials Abstract: A microwave plasma assisted method and system for heating and joining materials. The invention uses a microwave induced plasma to controllably preheat workpiece materials that are poorly microwave absorbing. The plasma ... NASA Center: NASA (non Center Specific) Publication Year: 1998 Added to NTRS: 2008-01-30 Document ID: 20080004546 Plasma cleaning device Author(s): Shannon, R. L. Abstract: High vacuum cleaning of contaminated surfaces such as hydrocarbon containment films can be accomplished by a plasma cleaning device which includes a plasma discharge housing to permit generation of a plasma in an environment ... NASA Center: Marshall Space Flight Center Publication Year: 1978 Added to NTRS: 2008-01-25 Accession Number: 78N27913; Document ID: 19780019970 Method for anisotropic etching in the manufacture of semiconductor devices Abstract: Hydrocarbon polymer coatings used in microelectronic manufacturing processes are anisotropically etched by hyperthermal atomic oxygen beams (translational energies of 0.2 to 20 eV, preferably 1 to 10 eV). Etching with ... NASA Center: Johnson Space Center Publication Year: 1993 Added to NTRS: 2008-01-25 Accession Number: 94N20491; Document ID: 19940016018 Plasma gun with coaxial powder feed and adjustable cathode Abstract: An improved plasma gun coaxially injects particles of ceramic materials having high melting temperatures into the central portion of a plasma jet. This results in a more uniform and higher temperature and velocity ... NASA Center: Glenn Research Center Publication Year: 1991 Added to NTRS: 2008-01-25 Accession Number: 91N25875; Document ID: 19910016561 METHOD OF PRODUCING AND ACCELERATING AN ION BEAM Abstract: A method of producing and accelerating an ion beam comprising the steps of providing a magnetic field with a cusp that opens in an outward direction along a centerline that passes through a vertex of the cusp: providing an ... NASA Center: Glenn Research Center Publication Year: 2005 Added to NTRS: 2006-08-02 Document ID: 20060009300 1 2 Next  + Back to Top + Sponsored by the NASA Scientific and Technical    Information Program + 2004 Vision for Space Exploration + Freedom of Information Act + NASA Web Privacy Policy and Important Notices + NASA Disclaimers, Copyright Notice,    and Terms and Conditions of Use NASA Official: Calvin Mackey Page Curator: NASA Center for AeroSpace Information (help@sti.nasa.gov) Last Updated: July 5, 2007