采用蒙特卡罗方法,模拟了烧蚀铕粒子输运动力学过程,得到了铕粒子电流随时空演化曲线,模拟结果与实验数据符合较好.探讨了环境气体压强对速度劈裂的影响,研究结果表明,环境气体压强对速度劈裂有较明显的影响.当靶-衬间距为60 mm时,铕粒子速度劈裂的范围为10～220 Pa;当环境气体压强为120 Pa时,速度劈裂现象最明显,烧蚀粒子的质量对速度劈裂的压强范围起决定性作用.
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