Solar X-ray control of the E-layer of the ionosphere
Ionospheric E layer formation, investigating role of solar X ray control by electron production rate and density calculations
Sengupta, P. R.↗
SEARCH · Engineering Papers
Results for “e + e - experiments”
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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Optimum launch trajectories for the ATS-E mission
Optimum launch trajectories for ATS-E mission with noncircular parking orbits, considering apogee motor size, perigee radius and duration constraints
Spurlock, O. F.↗
Biosynthesis of heme in the vitamin E-deficient rat
Heme biosynthesis defect in vitamin E-deficient rats affecting bone marrow synthesis of delta- aminolevolinic acid and liver formation of porphobilinogen
Brooks, S. K.↗
Investigation of the D and E regions of the ionosphere Final report
Characteristics of D and E regions of ionosphere
Smith, L. G.↗
Advanced study of coastal zone oceanographic requirements for ERTS E and F
Earth Resources Technology Satellites E and F orbits and remote sensor instruments for coastal oceanographic data collection
Adams, D. A.↗
Measurement of electron density of a negative-glow plasma with an E-band Fabry-Perot interferometer
Electron density measurement of negative glow plasma with E-band Fabry-Perot interferometer using flat plate technique
Kendall, B. M.↗
The electron density profile in the D and E regions of the equatorial ionosphere
Absorption and group delay data from equatorial station used to model electron density profile in D and E regions of ionosphere
Rangaswamy, S.↗
An experimental study of the ion chemistry and thermal balance in the E- and F-regions above Wallops Island
E and F region positive ion composition, electron concentration and thermal balance vertical profile, discussing ionizing radiation spectrum, plasma cooling, primary chemical reaction rates and ionospheric formation
Brace, L. H.↗
Transport processes in the E region of the ionosphere
Plasma transport processes role in E region from midlatitude nocturnal and auroral ionospheric models in terms of transport equations
Schunk, R. W.↗
Wind Tunnel Investigation at Low Speed of Aerodynamic Characteristics of Army Chemical Corps Model E-112 Bomblets with Span Chord Ratio of 2 - 1
An experimental investigation has been made in the Langley stability tunnel to determine the aerodynamic characteristics of the Army Chemical Corps model E-112 bomblets with span-chord ratio of 2:1. A detailed analysis has not been made; however, the results showed that all the models were spirally unstable and that a large gap between the model tips and end plates tended to reduce the instability.
Letko, W.↗
Three-track runway and taxiway profiles measured at International Airports E and F
Three-track runway and taxiway profiles are presented for use in studies of airplane response to ground roughness. This report presents the tabulated and plotted data for two international airports (designed airports E and F).
Hall, A. W.↗
Interference effect on annealing temperature of A and E centers in silicon.
The significance of recent experimental observations on the annealing defects in n-type silicon has been examined. The observed anomalous annealing temperatures of A and E centers and their impurity concentration dependence are explained by an interference between the two centers.
Fang, P. H.↗
The chemistry of neutral species in the D and E regions.
The photodissociation of molecular species such as oxygen, nitrogen, and water vapor in the upper atmosphere leads to the formation of a reservoir of chemical energy consisting of highly reactive atomic gases. The reactions of these with each other, and with the rest of the atmosphere, give a complex neutral chemistry involving many species and reactions. Local equilibrium can rarely be assumed for these reactions; transport by the horizontal and vertical mean flow, by eddy diffusion, and by molecular diffusion has quite different effects on the various constituents, depending on the time constants. The entire subject of the neutral chemistry in the D and E regions (between 50 and 160 km altitude) is reviewed, and related to existing experimental results. Needs for further research on the subject are indicated.
Bowhill, S. A.↗
Positive ion chemistry of the D and E regions.
A comparison of ion-molecule reaction rates implied by E- and F-region chemistry and measured in the laboratory shows on the whole good agreement except that the ionospheric analysis demands stronger temperature dependences. In the daytime D region, it is claimed that the reconciliation of positive ion densities with production rates and laboratory rate constants would best be achieved if (1) ionization of O2(1 delta g) and hydration of O4(+) in competition with the reduction of O4(+) to O2(+) by O were the dominant source of hydrates between 85 and 77 km, (2) ionization of NO by solar Lyman alpha followed by hydration was the dominant source of hydrates below 77 km, and (3) for some reason, Lyman alpha did not ionize NO effectively at pressures below those prevailing at 75 km.
Donahue, T. M.↗
Quiet-time magnetospheric field depression at 2.3 to 3.6 R sub E
Fluxgate magnetometer data obtained by OGO-5 near perigee were used to establish the existence of large field depressions in the magnetosphere under conditions of varying degree of disturbance at distances ranging from 2.3 to 3.6 R sub E at all local times. The results also provide the average delta B at these distances when Dst, as being derived at present, is zero.
Sugiura, M.↗
GSFC support for E-24 data reduction and analysis
Reduced and analyzed data from the plasma wave detector on OGO E spacecraft are reported. The bibliography lists 74 publications in scientific books and journals which highlight the analysis program.
Scarf, F. L.↗
Ionization sources of the ionospheric D and E regions.
Solar radiation in the extreme ultraviolet, lambda less than 1216 A, and X-ray regions of the spectrum is deposited between 60 and 200 km producing free electrons and ions. Below 60 km cosmic radiation creates ion pairs. Energetic electron precipitation, as during auroral events, creates additional ionization as do protons originating from solar flares, which also enhance solar X-ray and extreme ultraviolet emission. At night scattered solar Lyman alpha (1216 A) and Lyman beta (1026 A) as well as He I (584 A) and He II (304 A) are present. These and other lesser known sources, for example cosmic X-ray and extreme ultraviolet radiation, contribute to the formation of the nocturnal D and E regions.
Aikin, A. C.↗