Radiation dose of aircrews during a solar proton event without ground-level enhancement

摘要

A significant enhancement of radiation doses is expected for aircrews duringground-level enhancement (GLE) events, while the possible radiation hazardremains an open question during non-GLE solar energetic particle (SEP)events. Using a new air-shower simulation driven by the proton flux dataobtained from GOES satellites, we show the possibility of significantenhancement of the effective dose rate of up to4.5 μSv h ata conventional flight altitude of 12 km during the largest SEP event thatdid not cause a GLE. As a result, a new GOES-driven model is proposed to givean estimate of the contribution from the isotropic component of the radiationdose in the stratosphere during non-GLE SEP events.