Estimation of dose equivalent in STS-47 by a combination of TLDS and CR-39

Using the LET distribution obtained by CR-39 plastic track detectors and the total absorbed dose obtained by TLDs, whose response for relativistic heavy ions is proportional to the absorbed dose, the dose equivalents at various locations inside the Space Shuttle (STS-47) have been estimated. The results show a large difference in the effective quality factor compared with the results obtained from a tissue equivalent proportional counter. The reason for this discrepancy is discussed.