Dosimetric Characteristics of Radiation Fields on Board Czechoslovak Airlines' Aircraft as Measured with Different Active and Passive Detectors

Dosimetric characteristics on board Czechoslovak Airlines' aircraft (TU 154M; A310-300) were studied with different active and passive detectors (ionisation chamber RSS 112; scintillator based rate meter; GM counter based rate meter; neutron remmeter based on neutron moderation; thermoluminescent detectors, CR 39 track detectors and bubble-damage neutron detectors). Results obtained are analysed and discussed. It is estimated that the dose equivalent rates at altitudes of about 10 km are at least 3-4 µSv.h-1. Conclusions and recommendations for further studies and for radiation protection are given.