Aircrew Exposure To Cosmic RadiationEvaluated By Means Of Several Methods;Results Obtained In 2006

摘要

Routine evaluation of aircraft crew exposure to cosmic radiation in the Czech Republicis performed by means of calculation method. Measurements onboard aircraft work as a controltool of the routine method, as well as a possibility of comparison of results measured by means ofseveral methods. The following methods were used in 2006: (1) mobile dosimetry unit (MDU)type Liulin — a spectrometer of energy deposited in Si-detector; (2) two types of LETspectrometers based on the chemically etched track detectors (TED); (3) two types of thermo-luminescent detectors; and (4) two calculation methods. MDU represents currently one of the mostreliable equipments for evaluation of the aircraft crew exposure to cosmic radiation. It is an activedevice which measures total energy depositions (E_(dep)) in the semiconductor unit, and, afterappropriate calibration, is able to give a separate estimation for non-neutron and neutron-likecomponents of H~*(10). This contribution consists mostly of results acquired by means of thisequipment; measurements with passive detectors and calculations are mentioned because ofcomparison. Reasonably good agreement of all data sets could be stated.