带电粒子输运的两群模型:回顾与总结

AN OVERVIEW OF THE BIPARTITION MODEL FOR CHARGED PARTICLE TRANSPORT

本工作系统地总结了到目前为止带电粒子输运的两群模型已经取得的进展,包括该模型的基本思想和概念,主要的数学公式和数值方法以及这个模型的各种应用。叙述了这个模型如何从描述中能电子输运中产生,逐步扩展到研究轻离子输运,任意质量的离子输运,原子级联碰撞和包括研究溅射在内的粒子表面发射而成为广泛有效的精确的带电粒子输运理论的发展过程。总计15个图给出了两群模型与已有的实验测量结果和其他理论资料所作的广泛比较,表明带电粒子输运的两群模型是一个功能很强并富有潜力的统一带电粒子输运理论。一些尚未解决的带电粒子输运问题也将在本工作末提到。

The paper gives a review on progresses in the past four decades in bipartition model studies. Its basic ideas and concepts, main mathematical formulae and numerical methods, and its relevant applications are described. The model has been extended from a transport theory for electrons of medium energy range to a unified and accurate transport theory of charged particles, covering ion transport, atomic cascade collision, particle emissions in surface sputtering, and penetration of electrons of radiation therapy energy range. The 15 figures 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. Problems remaining to be solved with the bipartition model are discussed in the paper.