Sources of HCl and HF in the atmosphere of Venus.
Venus atmosphere HCl and HF abundances from Venera 4 data, discussing sources and atmospheric models
Mueller, R. F.↗
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Sources of HCl and HF in the atmosphere of Venus.
Correlations between physical conditions and chemistry of Venus atmosphere - sources of HCl and HF in atmosphere
VENUS ATMOSPHERE↗
Energetics of HC1 and HF in volcanic emanations
Abundances and energetics of HCl and HF in volcanic emanations
Mueller, R. F.↗
Direction of arrival of HF radio waves deduced from ionospheric electron content gradients.
Ionospheric electron content gradients from Faraday rotation observations of radio beacon satellites for direction finding of HF radio waves
Narayana Rao, N.↗
HF and VHF communications circuits - Earth orbiting spacecraft and ground stations
HF and VHF communications circuits for Earth orbiting spacecraft and ground stations
Towey, J. M.↗
DF-CO sub 2 and HF-CO sub 2 continuous-wave chemical lasers
Continuous wave chemical laser operation in carbon dioxide pumped by vibrational energy released from DF and HF molecular formation
Cool, T. A.↗
Observations of naturally occurring vlf and man-made hf plasma waves in auroral regions of the ionosphere
Polar ionosphere auroral oval position detection by satellite observations of naturally occurring VLF and man-made HF plasma waves
Bell, F. T.↗
Energetics of HCl and HF in volcanic emanations
Fugacities of hCl and HF compared with abundance in volcanic fumarolic emanations, indicating magma undersaturation
Mueller, R. F.↗
HCl, HF, and DF partially inverted CW chemical lasers
CW chemical lasers operation from partially inverted transitions of HCl, HF and DF molecules in subsonic flow
Cool, T. A.↗
VLF phase disturbances, HF absorption, and solar protons in the PCA events of 1967
VLF phase disturbances, HF absorption and solar protons in 1967 PCA events, using ionization model
Haave, C. R.↗
HF sounder study Final report, 16 Oct. - 18 Dec. 1970
Developing communications equipment for HF Lunar Sounder
Source record↗
On electron-cyclotron wave resonance in inductively coupled HF discharges
Electron-cyclotron wave resonance in inductively coupled HF ring discharges
Szuszczewicz, E. P.↗
Observation of intense superradiant emission in the high-gain infrared transitions of HF and DF molecules
Intense superradiant emission in HF and DF molecules high gain IR transitions, examining spectral distributions with pneumatically tuned Fabry-Perot interferometer
Goldhar, J.↗
Line shifts in the first overtone of DF broadened by HF
Line shifts in first overtone band of DF perturbed by HF, studying pressure induced transitions and partial pressures
Desai, U. G.↗
Magnetoionic mode coupling of hf radio waves
Magnetoionic mode coupling of HF radio waves, considering Faraday rotation of satellite signals
Titheridge, J. E.↗
Mode coupling of hf waves in the ionosphere
Ionospheric HF wave ordinary /O/ and extraordinary /E/ modes coupling effect on satellite signal Faraday rotation
Titheridge, J. E.↗
Luna 16 - Some Li, K, Rb, Sr, Ba, rare-earth, Zr, and Hf concentrations.
Concentrations of Li, K, Rb, Sr, Na, rare-earths, Zr and Hf have been determined for some Luna 16 core materials by mass-spectrometric isotope-dilution. Two regolith fines samples from different depths in the core, and four rock-chips, including both igneous rocks and breccias, have similar trace-element concentrations. The Luna 16 materials have general lunar trace-element characteristics but differ from other returned lunar samples in a manner that suggests the presence of excess feldspar. Unless the Luna 16 igneous rocks are fused soils, they appear to represent either partial plagioclase cumulates or the least differentiated igneous material yet returned from the moon. The similarity in trace-element concentrations of the igneous rocks and the fines would then suggest largely local derivation of the Luna 16 regolith.
Philpotts, J. A.↗
Stress-rupture strength and microstructural stability of W-HF-C wire reinforced superalloy composites
W-Hf-C/superalloy composites were found to be potentially useful for turbine blade applications on the basis of stress-rupture strength. The 100-and 1000-hour rupture strengths obtained for 70 volume percent fiber composites tested at 1090 C were 420 and 280 MN/sq m (61,000 and 41,000 psi). The investigation indicated that with better quality fibers, composites having 100- and 1000-hour rupture strengths of 570 and 370 MN/sq m (82,000 and 54,000 psi) may be obtained. Metallographic studies indicated sufficient fiber-matrix compatibility for long time applications at 1090 C for 1000 hours or more.
Petrasek, D. W.↗