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Accurate condensed history Monte Carlo simulation of electron transport. I. EGS nrc, the new EGS4 version
Author(s) -
Kawrakow I.
Publication year - 2000
Publication title -
medical physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.473
H-Index - 180
eISSN - 2473-4209
pISSN - 0094-2405
DOI - 10.1118/1.598917
Subject(s) - monte carlo method , physics , electron , computational physics , statistical physics , scattering , computer science , nuclear physics , optics , mathematics , statistics
In this report a new EGS4 version, called EGS nrc to reflect the substantial changes made to the original code is reported, which incorporates a new any‐angle multiple elastic scattering theory, an improved electron‐step algorithm, a correct implementation of the fictitious cross section method for sampling distances between discrete interactions, a more accurate evaluation of energy loss, as well as an exact boundary crossing algorithm. It is demonstrated that EGS nrc allows for an artifact free Monte Carlo simulation of ion chamber response and backscattering, situations that have been considered in the past as the two of the most stringent tests of condensed history Monte Carlo codes. A detailed discussion of the effect of the various components of the condensed history simulation of electron transport on the simulated ion chamber response is given in the accompanying paper.