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对强流脉冲离子束(IPIB)辐照Ti靶的烧蚀效应进行了二维数值研究.得到了表面烧蚀物质随脉冲时间的变化关系.得出TEMPⅡ型加速器产生的脉冲束流辐照靶材时引起的汽、液化均是从表面开始、并且汽化过程中表面物质被层层烧蚀的结论.同时,得到中心区的平均烧蚀速度为10m/s数量级,它远小于产生的烧蚀等离子体的喷发速度.得到脉冲期间靶材内部不同位置烧蚀斑痕形状的时间演化过程,以及束流中含有的离子种类分额不同时IPIB辐照过程产生的不同效果.
The ablation effect of Ti target irradiated by intense pulsed pulsed ion beam (IPIB) was studied by two-dimensional numerical simulation, and the relationship between the surface ablation mass and the pulsed time was obtained.The pulsed beam irradiation target generated by TEMPⅡtype accelerator The vapor and liquefaction caused by the material are all from the surface and the surface material is ablated by evaporation during the vaporization process.At the same time, the average ablation rate in the central area is 10m / s, which is much smaller than the ablation Plasma eruption rate.The temporal evolution of the ablation scar shape at different positions of the target during the pulse period and the different effects caused by the IPIB irradiation when the ion species fraction contained in the beam are different are obtained.