Hydrogen and helium isotope inner radiation belts in the Earth's magnetosphere
نویسندگان
چکیده
Radial transport theory for inner radiation zone MeV ions has been extended by combining radial diusive transport and losses due to Coulomb friction with local generation of D, T and He ions from nuclear reactions taking place on the inner edge of the inner radiation zone. Based on interactions between high energy trapped protons and upper atmospheric constituents we have included a nuclear reaction yield D, T and He ̄ux source that was numerically derived from a nuclear reaction model code originally developed at the Institute of Nuclear Researches in Moscow, Russia. Magnetospheric transport computations have been made covering the L-shell range L 1.0±1.6. The resulting MeV energy D, T and He ion ̄ux distributions show a strong in ̄uence of the local nuclear source mechanism on the inner zone energetic D, T and He ion content.
منابع مشابه
POLAR spacecraft observations of helium ion angular anisotropy in the Earth's radiation belts
New observations of energetic helium ion ̄uxes in the Earth's radiation belts have been obtained with the CAMMICE/HIT instrument on the ISTP/GGS POLAR spacecraft during the extended geomagnetically low activity period April through October 1996. POLAR executes a high inclination trajectory that crosses over both polar cap regions and passes over the geomagnetic equator in the heart of the radiat...
متن کاملEarth's magnetosphere and outer radiation belt under sub-Alfvénic solar wind
The interaction between Earth's magnetic field and the solar wind results in the formation of a collisionless bow shock 60,000-100,000 km upstream of our planet, as long as the solar wind fast magnetosonic Mach (hereafter Mach) number exceeds unity. Here, we present one of those extremely rare instances, when the solar wind Mach number reached steady values <1 for several hours on 17 January 20...
متن کاملRadiation Hazards and Manned Space Flight.
T HE POTENTIAL medical hazards of man's venture into space will span a number of disciplines in regard to the pathology and deranged physiology to which the human body may be subject in travel beyond the earth's atmosphere. Not the least hazard is that having to do with the effects of radiation to be encountered in free space. This problem is one which is receiving considerable attention from a...
متن کاملJupiter's Radiation Belts: Can Pioneer 10 Survive?
Model calculations of Jupiter's electron and proton radiation belts indicate that the Galilean satellites can reduce particle fluxes in certain regions of the inner magnetosphere by as much as six orders of magnitude. Average fluxes should be reduced by a factor of 100 or more along the Pioneer 10 trajectory through the heart of Jupiter's radiation belts in early December. This may be enough to...
متن کامل"Space Radiation Effects on Technology and Human Biology
1. Space Radiation Environment and Modeling • The Earth’s geomagnetic field and its effect on high-energy, ionizing particles including electrons, protons, and some heavy ions • The Earth's trapped radiation environment and Trapped radiation models, the characteristics of the Van Allen belts and South Atlantic Anomaly • Effects of trapped radiation on spacecraft and components • Space Weather c...
متن کامل