+ 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. + Publication Year + Subject + Availability Options + Item/Media Type Selected Navigations: Author > Churchill, R. J. [x] Sort results by: NASA Center | Date Added to NTRS | Publication Year There are a total of 8 record(s) matching your query. Sorted by: Date Added To NTRS in Descending order Puncture discharges in surface dielectrics as contaminant sources in spacecraft environments Author(s): Yadlowsky, E. J.; Hazelton, R. C.; Churchill, R. J. Abstract: The spacecraft charging phenomenon was simulated in a laboratory vacuum chamber by irradiating suitable dielectric targets with an electron beam operating at accelerating potentials from 0-34 kV. In addition to static ... NASA Center: NASA (non Center Specific) Publication Year: 1978 Added to NTRS: 2008-05-29 Accession Number: 79N25082; Document ID: 19790016911 A spark chamber spectrometer for space protons. Author(s): Aggson, T.; Churchill, R. J.; Madey, R. Abstract: Flyable space radiation detector based on spark chamber technology for measuring unidirectional proton spectra in six energy intervals NASA Center: NASA (non Center Specific) Publication Year: 1966 Added to NTRS: 2006-11-06 Accession Number: 66A23686; Document ID: 19660044396 Laboratory simulation of irradiation-induced dielectric breakdown in spacecraft charging Author(s): Yadlowsky, E. J.; Churchill, R. J.; Hazelton, R. C. Abstract: The discharging of dielectric samples irradiated by a beam of monoenergetic electrons is investigated. The development of a model, or models, which describe the discharge phenomena occuring on the irradiated dielectric ... NASA Center: NASA (non Center Specific) Publication Year: 1980 Added to NTRS: 2004-11-03 Accession Number: 80N17135; Document ID: 19800008875; Report Number: NASA-CR-162762 Experimental validation of a numerical model predicting the charging characteristics of Teflon and Kapton under electron beam irradiation Author(s): Hazelton, R. C.; Yadlowsky, E. J.; Churchill, R. J.; Parker, L. W.; Sellers, B. Abstract: The effect differential charging of spacecraft thermal control surfaces is assessed by studying the dynamics of the charging process. A program to experimentally validate a computer model of the charging process was ... NASA Center: NASA (non Center Specific) Publication Year: 1981 Added to NTRS: 2004-11-03 Accession Number: 82N14218; Document ID: 19820006345 Characterization of electrical discharges on Teflon dielectrics used as spacecraft thermal control Author(s): Yadlowsky, E. J.; Hazelton, R. C.; Churchill, R. J. Abstract: The dual effects of system degradation and reduced life of synchronous-orbit satellites as a result of differential spacecraft charging underscore the need for a clearer understanding of the prevailing electrical discharge ... NASA Center: NASA (non Center Specific) Publication Year: 1979 Added to NTRS: 2004-11-03 Accession Number: 79N24040; Document ID: 19790015869 Puncture discharges in surface dielectrics as contaminant sources in spacecraft environments Author(s): Yadlowsky, E. J.; Hazelton, R. C.; Churchill, R. J. Abstract: Spacecraft in geosynchronous orbits are known to become charged to large negative potentials during the local midnight region of the satellite orbit. Such discharges have been studied by the electron beam irradiation of ... NASA Center: NASA (non Center Specific) Publication Year: 1978 Added to NTRS: 2004-11-03 Accession Number: 78N24459; Document ID: 19780016516; Report Number: NASA-CR-157105 Characteristics of edge breakdowns on Teflon samples Author(s): Yadlowsky, E. J.; Hazelton, R. C.; Churchill, R. J. Abstract: The characteristics of electrical discharges induced on silverbacked Teflon samples irradiated by a monoenergetic electron beam have been studied under controlled laboratory conditions. Measurements of breakdown threshold ... NASA Center: NASA (non Center Specific) Publication Year: 1980 Added to NTRS: 2004-11-03 Accession Number: 81A19932; Document ID: 19810035528 Measurements of particle emission from discharge sites in Teflon irradiated by high energy electron beams Author(s): Hazelton, R. C.; Churchill, R. J.; Yadlowsky, E. J. Abstract: Anomalous behavior of synchronous orbit satellites manifested by overall degradation of system performance and reduced operating life is associated with electrical discharges resulting from differential charging of the ... NASA Center: NASA (non Center Specific) Publication Year: 1979 Added to NTRS: 2004-11-03 Accession Number: 80A19778; Document ID: 19800035608 + 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