Measured and Calculated Neutron Spectra and Dose Equivalent Rates at High Altitudes: Relevance to SST Operations and Space Research
National Aeronautics and Space Administration, 1974 - Aeronautics, Commercial - 64 pages
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H TERMINOLOGY UNITS AND CONVERSION FACTORS
GALACTIC COSMIC RAY DOSE EQUIVALENT RATES AT HIGH LATITUDES
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9 km a-particles absorbed dose absorbed dose rate accumulated dose airplane balloon chamber dose rate conversion factors cosmic radiation cosmic ray dose cosmic ray maximum crew cruising altitude cycle 19 damage increment dose equivalent rates energetic neutrons energy range estimates fast neutrons February 1956 event figure flight Foelsche Forbush decreases function of altitude galactic and solar galactic cosmic rays giant-energy event heavier nuclei high latitudes high-energy ICRP incident protons intense giant-energy ion chamber dose ionization Korff Langley low-energy lower limit maximum permissible dose Mendell MeV range Monte Carlo calculations mrem/hr NASA neutron flux neutron spectra November 12 nucleon obtained passengers phantom population produced radiation workers ray dose equivalent rem rate rem/yr solar activity solar cosmic rays solar cycle solar events solar flare solar modulation spectrum SST altitudes subsonic altitude Supersonic Transport theoretical tissue equivalent tissue slab total dose equivalent Trutz York University