Converting Boundary Representation Solid Models to Half-Space Representation Models for Monte Carlo Analysis

摘要

A new algorithm for energy-loss straggling in MCNP is demonstrated An approximate but accurate energy-loss moment-preserving differential cross section is used in conjunction with single event Monte Carlo simulation through each condensed history step to show that highly accurate energy spectra, leakage currents, and dose profiles can be obtained. This new approach provides a viable and even preferred alternative to the Landau straggling model currently employed in MCNP.