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Showing 1 to 10 of 10 for “"energetic protons"”.
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Controlled precipitation of energetic Van Allen belt protons by electromagnetic ion cyclotron (EMIC) waves : scientific and engineering implications
The inner Van Allen radiation belt traps highly energetic protons sourced from solar storms, cosmic rays and other processes. These particles can rapidly damage the space systems orbiting the inner region, limiting access to Low Earth Orbit (LEO). Decades of modeling and observations, however, show …
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Thick target pixe analysis
… thickness samples of geological ores by energetic protons (66 MeV) is a suitable technique for the determination of small traces of rare earth metals with detection limits for analysis expected to be below the μg.g-1 range. The fact that energetic protons can be used means that no need …
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Monte Carlo simulation and experimental studies of the production of neutron-rich medical isotopes using a particle accelerator.
… between enriched stable isotopes and energetic protons. An interesting observation is that during the production of proton-rich isotopes, fast and intermediately fast neutrons from nuclear reactions such as (p,xn) are also produced as a by-product in the nuclear reactions. This …
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Observation and study of giga electron volt solar energetic particles using the Milagrito extensive air shower detector
… events can lead to an understanding of the solar energetic particle acceleration mechanism(s). Although the energy source of these mechanisms is known to reside in the solar magnetic field, the details of the acceleration process(es) have continued to elude researchers. By observing the particle …
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Computer modeling and experimental work on the astrobiological implications of the martian subsurface ionising radiation environment
… field generated by the flux of exogenous energetic particles: solar energetic protons and galactic cosmic rays. The research reported here constitutes the first multidisciplinary approach to assessing the astrobiological impact of this radiation on Mars. A sophisticated computer model has …
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Data management of geostationary communication satellite telemetry and correlation to space weather observations
… Previous research has suggested that solar energetic protons (SEPs) cause SEUs. However, we find that SEUs for one generation of satellites are uniformly distributed across the solar cycle. SEUs for a second generation of satellites, for which we currently have only half a solar cycle of …
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Optical and gamma-ray study of gamma-ray binaries
… for the production of gamma-ray emission, where energetic protons collide with stellar photons to produce energetic electron-positron pairs which upscatter photons to high energies. This mechanism has been neglected in studies of photo-hadronic processes due to the larger radiative efficiency of …
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Solar flare gamma-ray spectroscopy with CGRO-COMPTEL
… about high-energy particles in solar flares. Energetic protons and ions interact with the solar atmosphere, giving rise to nuclear line emission at MeV energies and higher energy photons from the decay of neutral and charged pions. Electrons interact with the solar atmosphere producing a …
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Comparative Analysis of Electrodynamic Toroidal Radiation Shielding Configurations
… outright through radiation shielding. Because protons and other charged particles comprise most of these radiation particles, strong magnetic fields could be generated around spacecraft to deflect incoming charged radiation particles. This thesis investigates the performance of specific …
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Effect of Coil Layout on the Performance of the Proton Divertor Collimator Device
Made available in DSpace on 2017-07-06T18:55:38Z (GMT). No. of bitstreams: 3 Nieto-Perez_Martin_De_Jesus_MS.pdf: 37147999 bytes, checksum: bbfc2369a7fa2a773876b62e67116abd (MD5) Nieto-Perez_Martin_De_Jesus_MS_ABS.pdf: 449263 bytes, checksum: dd277725702ca739ac2af2da2e808776 (MD5) license.txt: 4813 …