Measurements and calculations of the radiation exposure of aircrew personnel on different flight routes

摘要

The complexity of the radiation environment at aviation altitudes with respect to energy range and particle composition usually demands high experimental expenditure. Small and easy-to-handle thermomminescent dosemeters (TLDs) evaluated according to the High Temperature Ratio (HTR) method represent a good alternative. The HTR-method permits the determination of the biologically relevant dose equivalent in mixed radiation fields and was applied successfully in various terrestrial radiation fields including therapeutic beams as well as during several space missions. LiF:Mg,Ti- and CaF_2:Tm TL-crystals were used for measurements onboard aircraft. The results for both north-bound and equatorial flight routes are compared with calculations by means of the well-established code CARI.