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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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At least 181 records · Page 10

All sources NASA NTRS DOE OSTI

DOE OSTI2024

A collinear Second-Harmonic Orthogonally Polarized interferometer (SHOPi) for MITL gap plasma density measurements on Sandia’s Mykonos accelerator

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Hines, Nathan R.↗

DOE OSTI2024

Electron density measurements and calculations in a helium capacitively-coupled radio-frequency plasma

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Donko, Zoltan↗

DOE OSTI2024

MITL Electrode Surface Plasma Density Measurements at Sandia's 1 MA accelerator Mykonos

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Hines, Nathan R↗

DOE OSTI2025

Improvements to Radiography for TRISO Buffer Layer Density Measurement

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Hutton, Hannah [ORNL]↗

NASA NTRS2021

Multipoint Density Measurements of Geocoronal Pickup Ions

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R. G. Gomez↗

NASA NTRS2020

Flux-density measurements of the high-redshift blazar PSO J047.4478+27.2992 at 4.7 and 8.2 GHz with RATAN-600

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T Mufakharov↗

NASA NTRS1963

AIR DENSITY MEASUREMENTS FROM THE EXPLORER IX SATELLITE

Air resistance and radiation pressure as the cause of changes in the orbit of explorer ix satellite

EXPLORER IX SATELLITE↗

NASA NTRS1963

Density measurement of cryogenic liquids by beta ray absorption using silicon surface barrier detectors summary report, 18 feb. 1962 - 30 jun. 1963

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James, D. T.↗

NASA NTRS1965

Flight-test results of gamma ray scattering as a technique for air-density measurement

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Reichle, H. G., Jr.↗

NASA NTRS1966

Electron and metastable atom density measurements with a two wavelength laser heterodyne interferometer

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Johnson, W. B.↗

NASA NTRS1969

Neutral density measurements in an NH3 MPD arc Final report, 22 Jul. 1968 - 31 Dec. 1969

Applicability of vacuum ultraviolet spectrometry to detecting neutral atom and molecule constituents in exhaust streams

Gloersen, P.↗

NASA NTRS1972

Magnetospheric electron density measurements from upper hybrid resonance noise observed by IMP-6

A band of natural radio noise between the local electron plasma frequency and the upper hybrid resonance frequency is observed by the IMP-6 satellite. The band exists over a large range of geocentric radial distances extending from inside the plasmapause boundary to greater than 10 earth radii in the outer magnetosphere. The center frequency of the noise band decreases with increasing radial distance, and changes abruptly at the plasmapause boundary. The broadband electric field strength of this noise is very small, seldom exceeding 10 microvolts/meter, and probably could not be detected without using long electric antennas of IMP-6. It is believed that this noise is produced by incoherent Cerenkov emission from super-thermal electrons. In some cases a second very narrow noise band was observed at a frequency slightly above the second harmonic of the electron gyrofrequency.

Shaw, R. R.↗

NASA NTRS1973

Double electrostatic probe for measuring density, temperature, and velocity of a flowing plasma

A method for obtaining plasma electron temperature and density, as well as the Mach number and flow velocity from the current-voltage characteristic of a flat-faced double probe, is presented. Calculated momentum fluxes of a flowing argon plasma obtained with this probe are compared with experimentally determined momentum fluxes. Reasonable agreement is obtained.

Chubb, D. L.↗

NASA NTRS1972