【摘要】 本文用蒙特卡洛方法模拟气体分子入射一运动管道及其在管内的运动过程,然后在管道出口处把飞出管道的分子数目按角分布进行统计,从而得到运动管道出口分子束流的角分布图。它与通常讨论静止管道时的处理方法和角分布结果有较大的不同。从结果讨论中发现,管道运动速度与气体分子热运动速度之比值是决定运动管道出口分子束流角分布的一个重要参数。更多还原

【Abstract】 A simulation on a flying process of molecules incident into a moving tube is made by Monte Carlo method in this paper, After the numbers of molecule flying out of the tube are recored at each angle interval, the molecular distribution patterns at exit of tube can be obtained. From the discussions on the presented results, it is shown that the parameter which is the ratio of the moving velocity of a tube to thermal velocity of molecules has the larger effect on molecular beam distribution patterns than any other parameters.更多还原