Conference on New Technology
Conference on aerospace technology - materials, fabrication processes, electric power generation, instrumentation, lubrication, superconductivity, and plasma physics
POWER GENERATOR↗
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Results for “PLASMA PHYSICS”
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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Research program of MIT's Center for Space Research
Research program at MIT center for space science research - electronics, radar astronomy, plasma physics, and X-ray astronomy
RESEARCH FACILITY↗
Measurements of resonant charge exchange cross sections in nitrogen and argon between 0.5 and 17 eV
Ionization cross sections determined for resonance charge exchanges in nitrogen and argon - plasma physics
ARGON↗
Methods of quadrature for Euler transform integrals.
Bilinear expansions treating Euler transform of special integrand, reviewing properties of Jacobi function for application in quantum mechanics or plasma physics
TRANSFORM INTEGRAL↗
Research Laboratory of Electronics Quarterly progress report, period ending 28 Feb. 1967
General physics, plasma dynamics, engineering, and communication sciences programs at Research Laboratory of Electronics
ENGINEERING↗
Coordinated Science Laboratory progress report for March - August, 1967
Research laboratory progress summary including studies in surface, applied, and plasma physics
Source record↗
Plasma in the magnetosphere.
Magnetosphere structure, thermal plasma in magnetosphere, energetic particles and waves in magnetosphere, noting relevance to plasma physics investigations
Scarf, F. L.↗
Atomic transition probabilities.
Atomic transition probabilities, discussing improvement attributed to wider interest in space science, astrophysics, plasma physics and research technique developments
Garstang, R. H.↗
Solution of Vlasov's equation by transform methods
Fourier and Hermite transform methods for Vlasov equation solutions in plasma physics
Armstrong, T. P.↗
The potential calculation and some applications
Potential calculation from given source distribution, including direct and iterative methods, error analysis, convergence, computer programs and applications in plasma physics
Hockney, R. W.↗
The use of a space station to advance the goals of science
NASA orbital space station mission application program on solar activity, plasma physics, and space environment effect on biological systems
Smith, H. J.↗
Theory of discrete wave packets in the solar wind.
Discrete wave packets were observed by Ogo 5 and earlier satellites. These waves were believed to be in the whistler mode. Since their group velocities were found to be smaller than the solar-wind speed, these waves could not have been generated in the bow shock and could not have propagated upstream later. The present theory discusses a mechanism similar to that of the echo phenomenon in plasma physics discovered in recent years. The present theory enables us to explain (a) why the wave packets were associated with the bow shock, (b) why the wave packets were characterized by coherent oscillations, and (c) why the wave packets had group velocities smaller than the solar wind and yet could still occur in the solar wind. In short, our theory is able to interpret all the essential features deduced from the observational data.
Wu, C. S.↗
Ion-molecule collision frequencies in gases determined by phase coherent pulsed ICR.
The transient method considered is analogous to similar phase coherence experiments performed in NMR and plasma physics. Using a pulsed ion cyclotron resonance (ICR) spectrometer equipped with a trapped ion analyzer cell, gaseous ions are formed by a pulse of an electron beam and then trapped in the cell by the combined effects of the magnetic and electrostatic fields. The results obtained in the experiments indicate that the classical mobility treatment of Wannier (1953) is helpful in the understanding of collision frequencies under the considered conditions.
Lieder, C. A.↗
Lagrangian methods in the analysis of nonlinear wave interactions in plasma
An averaged-Lagrangian method is developed for obtaining the equations which describe the nonlinear interactions of the wave (oscillatory) and background (nonoscillatory) components which comprise a continuous medium. The method applies to monochromatic waves in any continuous medium that can be described by a Lagrangian density, but is demonstrated in the context of plasma physics. The theory is presented in a more general and unified form by way of a new averaged-Lagrangian formalism which simplifies the perturbation ordering procedure. Earlier theory is extended to deal with a medium distributed in velocity space and to account for the interaction of the background with the waves. The analytic steps are systematized, so as to maximize calculational efficiency. An assessment of the applicability and limitations of the method shows that it has some definite advantages over other approaches in efficiency and versatility.
Galloway, J. J.↗
Performance of a 12-coil superconducting bumpy torus magnet facility
The bumpy torus facility consists of 12 superconducting coils, each 19 cm i.d. and capable of 3.0 teslas on their axes. The coils are equally spaced around a toroidal array with a major diameter of 1.52 m, and are mounted with the major axis of the torus vertical in a single vacuum tank 2.6 m in diameter. Final shakedown tests of the facility mapped out its magnetic, cryogenic, vacuum, mechanical, and electrical performance. The facility is now ready for use as a plasma physics research facility. A maximum magnetic field on the magnetic axis of 3.23 teslas was held for a period of more than sixty minutes without a coil normalcy. The design field was 3.00 teslas. The steady-state liquid helium boil-off rate was 87 liters per hour of liquid helium without the coils charged. The coil array was stable when subjected to an impulsive loading, even with the magnets fully charged. When the coils were charged to a maximum magnetic field of 3.35 teslas, the system was driven normal without damage.
Roth, J. R.↗
Performance of a 12-coil superconducting 'bumpy torus' magnet facility.
The NASA-Lewis 'bumpy torus' facility consists of 12 superconducting coils, each 19 cm ID and capable of 3.0 tesla on their axes. The coils are equally spaced around a toroidal array with a major diameter of 1.52 m, and are mounted with the major axis of the torus vertical in a single vacuum tank 2.6 m in diameter. Final shakedown tests of the facility mapped out its magnetic, cryogenic, vacuum, mechanical, and electrical performance. The facility is now ready for use as a plasma physics research facility. A maximum magnetic field on the magnetic axis of 3.23 teslas has been held for a period of more than sixty minutes without a coil normalcy.
Roth, J. R.↗
America's future in space
The accomplishments of space technology are briefly reviewed, giving attention to the revolution in communication produced by relay satellites, advances in meteorology due to weather satellites, the exploration of the moon, and the Skylab Program. A new approach to space exploration will be provided by the Space Shuttle. Spacelab offers a wide variety of mission choices to the international scientific community. The study of plasma physics will provide information useful for the development of fusion reactors. The science of astronomy will be advanced by the High Energy Astronomy Observatory and a large space telescope.
Petrone, R. A.↗