MONTE-CARLO CODE COMPARISONS FOR THE CALCULATION OF ABSORBED DOSE PERUNIT FLUENCE IN SLAB PHANTOMS FOR ELECTRON ENERGIES FROM 50 KEV TO 10MEV

The MCNPE-BO and MCNP4 Monte Carlo electron-photon codes were used to calculate the dose equivalent per unit fluence at various depths in ti ssue-equivalent slab phantoms for broad parallel beams of monoenergeti c electrons with energies from 50 keV to 10 MeV. The study was carried out in the framework of the activities of a ICRP/ICRU Joint Task Grou p with the support of EURADOS WG4 (Numerical Dosimetry). Some prelimin ary results and comparisons as well as a general discussion on the per formances of the codes are presented, demonstrating quite a satisfacto ry agreement among the results obtained using the two codes and those of other authors.