Bartlett D T, Hager L G, Tanner R J, Steele J D
National Radiological Protection Board, Chilton, Didcot, Oxon OX11 0RQ, UK.
Radiat Meas. 2001 Jun;33(3):243-53. doi: 10.1016/s1350-4487(00)00098-6.
Measurements of the complex cosmic radiation field in aircraft at altitude are made with a passive survey meter comprising routine-use thermoluminescent detectors and etched track detectors. The energy dependence of response of the etched track detectors used to determine the neutron component has been characterized, partly, up to a neutron energy of 180 MeV. The neutron detectors are routinely calibrated in the CERN/EC Reference Field. The 15% determination level for total dose equivalent is 100 microSv. The evidence is that the passive survey meter provides a reliable determination of route dose.
