中文摘要：

利用Monte Carlo模拟软件Fluka2006.3b.2,模拟计算质子经单膜散射后粒子角分布及能量分布.讨论质子束能量、散射体材料及厚度对散射角分布的影响.结果表明：薄的高原子序数材料适合做散射体.

英文摘要：

The single-scattering-foil method is the basic of passive proton beam spreading system.In this paper,the angular distribution and energy distribution of proton beam on passing through a single scattering foil are calculated using Monte-Carlo multi-particle transport code Fluka2006.3b.2.,including the effect of proton energy,scattering material and target thickness on scattering angle.The result shows that thin-high-atomic-number material can be used as the scattering material.