Spontaneous radiofrequency emission from hot-electron plasmas
Spontaneous radio frequency emission from hot electron plasma, and enhanced cyclotron radiation from electron cyclotron resonance discharge
HOT ELECTRON↗
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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Radiofrequency-interference protection for pyrotechnic systems in manned spacecraft.
Premature actuation protection against RF interference for electroexplosive devices in spacecraft pyrotechnic systems
Robinson, R. L.↗
Radiofrequency transmission characteristics of several ablation materials
Transmission loss and effects on antenna radiation patterns and impedance produced by thermally degraded ablation materials
Castellow, S. L., Jr.↗
Radiofrequency transmission characteristics of candidate ablation materials for planetary-entry-vehicle heat shields
Radio frequency transmission characteristics of ablation materials for planetary entry vehicle heat shields
Chapman, A. J.↗
A two component model of changes in Jupiter's radiofrequency rotation period.
Jupiter decametric radio source analysis suggesting two component model of rotation at both constant and variable rotational periods
Register, H. I.↗
Radiofrequency system analysis of the Lewis cyclotron modification
Computer code for analyzing radio frequency system of modified cyclotron
Fessler, T. E.↗
Measurement and analysis of radiofrequency indigenous noise
Measurement and analysis of radio frequency indigenous noise
Anzic, G.↗
Radiofrequency recombination lines from heavy elements - Carbon
Carbon atom RF recombination lines evaluated for conditions in H II regions and planetary nebulae
Dupree, A. K.↗
Measurement and analysis of radiofrequency indigenous noise
Radio frequency indigenous noise measurement in urban areas
Anzic, G.↗
Radiofrequency recombination lines
RF spectral recombination lines from atomic level transitions, discussing populations, H lines, electron temperature, density and emission and formation
Dupree, A. K.↗
Restoration of optical properties of surfaces by radiofrequency-excited oxygen
Optical devices contaminated mirror surfaces restoration with atomic oxygen from RF plasma by noncontaminating nondestructive oxidation of polymer film
Carlson, G. L.↗
Exploratory plasmadynamic studies of vortex and coaxial flow geometries employing radiofrequency induction heating
Vortex and coaxial flow of argon and helium plasmas heated inductively, and strong magnetic field effects on turbulent plasma mixing, for gas core reactors
Keyes, J. J., Jr.↗
Radiofrequency observations of symmetric nebulae around Wolf-Rayet stars and an O7f star
Symmetrically distributed nebulae around Wolf- Rayet stars, detailing Ngc 7635 and associated star BD plus 60 deg 2522
Johnson, H. M.↗
Measurement and analysis of radiofrequency indigenous noise
RF noise surveys in urban areas for effective space to earth communication link design at UHF
Anzic, G.↗
Radiofrequency recombination lines from the interstellar medium
Observations of recombination lines form normal H II regions, extended H II regions, nonthermal sources, and the H I medium are discussed. Detection of recombination lines from elements other than hydrogen may provide a means of identifying fossil Stromgren spheres at high temperature.
Dupree, A. K.↗
UV and radiofrequency observations of Wolf-Rayet stars
Observations of W stars in the ultraviolet by OAO 2 and at 750 and 1400 MHz with the Green Bank telescopes are discussed. The emphasis is on the Green Bank observations of W stars with symmetric nebulae around them, their interpretation, and comparisons with other data. The implications regarding mass distribution, internal motion, flux density, ejected mass, velocity dispersion, and expanding envelopes are considered in detail.
Johnson, H. M.↗
Radiofrequency recombination lines as diagnostics of the cool interstellar medium.
Quantitative details are given of a new diagnostic technique for the carbon and hydrogen (H I) recombination lines. Theoretical results are presented for conditions expected in H I clouds, and are compared with available observations for Orion A and NGC 2024.
Dupree, A. K.↗
Performance of an ion-cyclotron-wave plasma apparatus operated in the radiofrequency sustained mode
An experimental study has been made of an ion-cyclotron-wave apparatus operated in the RF-sustained mode, that is, a mode in which the Stix RF coil both propagates the waves and maintains the plasma. Problems associated with this method of operation are presented. Some factors that are important to the coupling of RF power are noted. In general, the wave propagation and wave damping data agree with theory. Some irregularities in wave fields are observed. Maximum ion temperature is 870 eV at a density of five times 10 to the 12th power cu cm and RF power of 90 kW. Coupling efficiency is 70 percent.
Swett, C. C.↗