Magnetic field variations in temperate zone sporadic-E layers.
Geomagnetic field variations in temperate zone sporadic E layer according to wind-shear theory
SPORADIC E LAYER↗
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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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Positive ion layers in the E-region of the ionosphere.
Positive ion layers in E region explained by wind shear theory, obtaining steady state solutions for simple model
IONOSPHERIC ION DENSITY↗
Electron and ion temperature variations in temperate zone sporadic-E layers.
Electron and ion temperature changes in sporadic E layer based on wind shear theory, using energy equation
ENERGY EQUATION↗
Lower E-region ion concentrations measured at a time of declining solar activity.
Lower E-region positive ion concentrations measured at time of declining solar activity by rocket installed mass spectrometer
SOLAR ACTIVITY↗
Ionospheric dynamics with emphasis on the E- region.
Ionospheric E region dynamical processes, discussing energy phenomena of planetary waves, tidal oscillations and gravity waves
IONOSPHERIC IRREGULARITY↗
Rocket observations of electron temperature in the E region.
Electron temperature observation in E region with Langmuir probes on Nike Apache rockets, discussing solar radiation effect
ELECTRON TEMPERATURE↗
OGO-E space vehicle response to transient loading at Atlas booster engine cutoff
Computer program for OGO-E vehicle response analysis to transient loading during Atlas booster burnout
Alper, M. E.↗
OGO-E plasma spectrometer.
OGO-E plasma spectrometers for measuring total flux below 12 kev and energy /spectral density/ of plasma
Graham, R. A.↗
Investigation of the time variation of sporadic-E layers Final report
Analysis of wind and electron density profiles of E-region obtained from Nike-Apache rockets launched 22 Feb. 1968
Bedinger, J. F.↗
A low-energy channel-multiplier spectrometer for ATS-E.
Channel multiplier spectrometer for low energy electrons and protons at synchronous altitude on ATS-E satellite
Bakke, J. C.↗
Plasma tocopherol concentrations and vitamin E deficiency in dogs
Plasma tocopherol concentrations and vitamin E deficiency in dogs, noting pathologic changes in smooth muscle, central nervous system, skeletal muscle and retina
Hayes, K. C.↗
Exposure of Atmosphere Explorer satellites to Van Allen belt radiation. Missions C, D, and E
Particle flux densities of radiation belts for atmospheric explorer missions C, D, and E
Stassinopoulos, E. G.↗
Observed redistribution of E-region ionization by neutral winds
Neutral wind effects on redistribution of E region ionization and recombination, comparing electron density profiles to vertical ion drift velocities
Bedinger, J. F.↗
Glauber calculations of polarization of Lyman-alpha resulting from e/-/-H/1s/ collisions.
We have calculated the polarization fraction of the Lyman-alpha radiation emitted in e/-/-H/1s/ collisions using the Glauber, Born, and various Vainshtein approximations, and have compared these predictions with observation. We find that the Born, Glauber and all forms of the Vainshtein yield results which are very close to each other and to the data in the energy range from 30 to 700 eV. The comparatively small differences between the various approximations are detailed in the text; also, the reason for the close agreement of the predicted polarization fractions - although the computed 1s-2p total and differential cross sections are not so close - is explained. With respect to the Glauber approximation, the importance of computing the phase integral along a direction perpendicular to the momentum transfer q at each value of q, is stressed.
Gerjuoy, E.↗
Rocket observations of sporadic-E layers.
The characteristics of midlatitude sporadic-E layers are observed using rocket payloads incorporating a probe and a propagation experiment. Layers below 120 km show evidence of preferred altitudes. The slopes of layers are within 1 deg of horizontal. The horizontal dimensions are deduced to be several hundred kilometers. Individual profiles of daytime layers show a range of shapes ranging from triangular to rectangular. The plasma frequency derived from the peak electron density in the layer is found to agree with the blanketing frequency given by the local ionosphere sounder.
Smith, L. G.↗
A neutral-atmosphere composition experiment for the Atmosphere Explorer-C, -D, and -E.
The neutral-atmosphere composition experiment instrumentation is designed to obtain in-situ measurements of neutral thermosphere composition from Atmosphere Explorer-C, -D, and -E. The system is based on previously flown OGO-6 and San Marco-3 composition instruments. The mass-spectrometer sensor includes a gold-plated thermalizing chamber and ion source, a hyperbolic rod quadrupole analyzer, and an off-axis electron multiplier. Automatic ion-source sensitivity control and pulse-counting techniques provide density measurement capability from approximately 125 to 1000 km altitude. The normal operating mode includes measurement at all masses in the range of 1 to 44 amu, with emphasis on hydrogen, helium, oxygen, nitrogen, and argon.
Pelz, D. T.↗
On the e-process - Its components and their neutron excesses
The pattern of abundances within the iron-abundance peak of the solar system is analyzed for various Cr, Fe, and Ni abundances, and a method is developed for finding the best fit to a given set of abundances with a chosen number of zones, i.e., mass contributions characterized by differing values of eta. This material can be synthesized by a superposition of e-process compositions in a low-eta region (eta = 0.003) and a high-eta region (eta = 0.065 -0.080) with at least 85% coming from the low-eta region. Addition of a third eta zone is unproductive. The applicability of the particle-poor freeze out is discussed in the light of these abundances, and the results of employing different numbers and types of zones are interpreted as an indication of the relative abundances themselves. Ejection of the low-eta zones is of great interest in gamma-ray astronomy and for empirical testing of theories of nucleosynthesis. The distribution of high zones should give important information about the formation of collapsed remnants.
Hainebach, K. L.↗
Determination of nitric oxide concentrations from sunrise E-region electron density measurements
Midlatitude sunrise electron density profiles have been analyzed in order to determine nitric oxide concentrations in the range 100-160 km. In general, the determinations are restricted to heights for which the ionization of nitric oxide by direct solar Lyman-alpha radiation is the main contribution to the growth of the E region. The concentrations obtained are larger, by factors of approximately 3 to 4, than those obtained from the midlatitude airglow measurements of other workers. Concentrations have been obtained from one sunset measurement and these are significantly lower than the sunrise values. The results also give a clear indication of increasing nitric oxide concentrations above 120 km with increasing solar activity.
Monro, P. E.↗