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(a) Mean energy, (b) planar fluence, and (c) angular and (d) spectral distributions for BEAMnrc with BH (default) and with NIST bremsstrahlung cross sections and for the 10×10 and 40×40 cm2 field sizes. The percentage difference between BEAMnrc with the default parameters∕techniques and NIST, DBS combined with photon forcing (DBS 1000+PF 5), DBS combined with augmented charged particle range rejection (DBS 1000+ARR), and VMC++ is also shown.
