An overview of the bipartition model for charged particle transport

This paper systematically summarizes the progress to date and developments of the bipartition model, including its basic ideas and concepts, main mathematical formulae and numerical methods, and its relevant applications. The model has been extended from a transport theory for electrons in the medium energy range to a unified and accurate transport theory of charged particles, covering ion transport, atomic cascade collisions, particle emission from a surface including sputtering and the penetration of electrons in the radiation therapy energy range. The thirty figures in total give an extensive comparison:between the results given by using the bipartition model and the data taken from other theories and experimental measurements, which shows that the bipartition model is an accurate, powerful and unified transport theory of charged particles. Some research being done using the bipartition model is mentioned briefly at the end of this paper. (C) 1998 Elsevier Science Ltd. All rights reserved.