31 research outputs found
A Computer Routine for Relay I Trapped Proton Distributions
Fortran routine for Relay I trapped proton distribution measurement
Penetration of solar protons to four earth radii in the equatorial plane
Explorer 26 observations of solar protons at altitudes of four earth radii inside magnetosphere near geomagnetic equato
Relay I trapped radiation measurements
Radiation measurements of geomagnetically trapped electrons by instruments on Relay I satellite in 196
A survey of inner zone protons
Survey of trapped radiation in magnetosphere interior by Relay I satellit
Toward a descriptive model of galactic cosmic rays in the heliosphere
Researchers review the elements that enter into phenomenological models of the composition, energy spectra, and the spatial and temporal variations of galactic cosmic rays, including the so-called anomalous cosmic ray component. Starting from an existing model, designed to describe the behavior of cosmic rays in the near-Earth environment, researchers suggest possible updates and improvements to this model, and then propose a quantitative approach for extending such a model into other regions of the heliosphere
EDI convection measurements at 5-6 R<sub>E</sub> in the post-midnight region
The Electron Drift Instrument on Cluster: overview of first results
International audienceEDI measures the drift velocity of artificially injected electron beams. From this drift velocity, the perpendicular electric field and the local magnetic field gradients can be deduced when employing different electron energies. The technique requires the injection of two electron beams at right angles to the magnetic field and the search for those directions within the plane that return the beams to their associated detectors after one or more gyrations. The drift velocity is then derived from the directions of the two beams and/or from the difference in their times-of-flight, measured via amplitude-modulation and coding of the emitted electron beams and correlation with the signal from the returning electrons. After careful adjustment of the control parameters, the beam recognition algorithms, and the onboard magnetometer calibrations during the commissioning phase, EDI is providing excellent data over a wide range of conditions. In this paper, we present first results in a variety of regions ranging from the polar cap, across the magnetopause, and well into the magnetosheath