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Electron beam focussing method having beam displaced using electrical acceleration field/magnetic field combination providing desired focussing point position using equipotential plane
Electron beam focussing method having beam displaced using electrical acceleration field/magnetic field combination providing desired focussing point position using equipotential plane
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机译:使用电子加速场/磁场组合移动电子束的电子束聚焦方法,使用等电位平面提供所需的聚焦点位置
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摘要
The electron beam (28) focussing method has an electron source (16) with the beam displaced from the propagation axis (Z). An electrical acceleration field is created along the axis. A magnetic field (B) is created along the propagation axis and cooperates with the electrical field to create a desired focussing point using the equipotential plane (48,50).
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