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Differential neutron energy spectra measured on spacecraft low earth orbit
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Frank, A. L. Benton, E. V. Melkumyan, L. V. Dudkin, E. V. Akopova, A. B. Potapov, Yu V. |
| Copyright Year | 1995 |
| Description | Two methods for measuring neutrons in the range from thermal energies to dozens of MeV were used. In the first method, alpha-particles emitted from the (sup 6) Li(n.x)T reaction are detected with the help of plastic nuclear track detectors, yielding results on thermal and resonance neutrons. Also, fission foils are used to detect fast neutrons. In the second method, fast neutrons are recorded by nuclear photographic emulsions (NPE). The results of measurements on board various satellites are presented. The neutron flux density does not appear to correlate clearly with orbital parameters. Up to 50% of neutrons are due to albedo neutrons from the atmosphere while the fluxes inside the satellites are 15-20% higher than those on the outside. Estimates show that the neutron contribution to the total equivalent radiation dose reaches 20-30%. |
| File Size | 370022 |
| Page Count | 8 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19950019512 |
| Archival Resource Key | ark:/13960/t25b51r2g |
| Language | English |
| Publisher Date | 1995-03-01 |
| Access Restriction | Open |
| Subject Keyword | Atomic And Molecular Physics Spacecraft Orbits Albedo Radiation Detectors Low Earth Orbits Energy Spectra Neutrons Radiation Measurement Neutron Flux Density Nuclear Emulsions Thermal Energy Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
