DOSIMETRY ON THE SPACELAB MISSIONS IML1 AND IML2, AND D2 AND ON MIR

Detector packages consisting of plastic nuclear track detectors, nucle ar emulsions, and thermoluminescence detectors were exposed inside BIO RACK during the. Spacelab missions IML1 and IML2, in different section s of the MIR space station, and inside the Spacelab module at rack fro nt panels or stowage lockers and in the Spacelab tunnel during D2. In addition, during D2, each Payload Specialist (PS) has worn three perma nent detector packages;:one at the neck; one at the waist; and one at the ankle. Total dose measurements, particle fluence rate and LET spec tra, number of nuclear disintegrations and neutron dose from this expo sure are given in this report. The results are compared to theoretical calculations and to previous missions results. The dose equivalent (t otal radiation exposure) received by the PSs were calculated from the measurements and range from 190 to 770 mu Sv d(-1). Finally, a cursory investigation of results from a particle telescope from two silicon d etectors, first used in the last BIORACK mission on STS76, is reported . Copyright (C) 1996 Elsevier Science Ltd