Studies of responses of recombination chambers on high energy radiation fields - intercomparison experiments

Values of H*(10) have been determined using a recombination chamber (RC) REM-2 during international intercomparison experiments in high energy radiation fields at CERN and GSI. These values agree (within some percents) with the reference values. Moreover, response to H*(10) have been determined for RC newly elaborated or modified. The RC, filled with BF3 gas, Placed in the moderator type D, calibrated in the field of 239Pu-Be neutron source, makes it possible to measure directly the H*(10) also in high-energy radiation fields, applying a correction coefficient 1.15. This coefficient is not needed, when a heavier moderator is used (with an additional layer of Pb). The results of this work show the real suitability of RC for the monitoring of work places, for radiological protection purposes in the vicinity of high-energy accelerators, also when operated in strong pulse mode. (author)