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用模拟计算机和数字计算机对端流式电离真空规中的电位分布和电子运动轨迹作了计算分析。结果表明:这种规管的加速栅包含的空间存在着径向电场和轴向电场,它的有效电离区比BA规大;径向电场和轴向电场有利于气体离子向中心轴集聚并沿中心向收集极作加速运动;电子向加速栅作弯曲运动后将在径向作正栅振荡。这些结果对端流式结构所具有的较高的灵敏度和较小的几何尺寸零散性可作合理的解释。
The electric potential distribution and electron trajectory in the flow-side ionization vacuum gauge of analog computer and digital computer were calculated and analyzed. The results show that there is a radial electric field and an axial electric field in the space covered by this regulated accelerating grid, and its effective ionization region is larger than that of the BA gauge. The radial electric field and the axial electric field are favorable for the gas ions to gather along the central axis and along The center accelerates toward the collector pole; the electrons make a positive gate oscillation in the radial direction after the electrons make a bending movement toward the acceleration gate. These results provide a reasonable explanation for the higher sensitivity and smaller geometric dispersion of the end-flow structure.