公开(公告)号：US4704532A

公开(公告)日：1987-11-03

申请号：US839294

申请日：1986-03-13

Applicant: Zhong-yi Hua

Inventor： Zhong-yi Hua

IPC: G01N24/00 ,  G21K1/087 ,  H01J3/18 ,  H01J37/12 ,  H01J37/153 ,  H01J49/42

CPC classification number: H01J3/18 ,  G21K1/087

Abstract: The invention includes a method for obtaining an exact electrostatic quadrupole field by the use of simple structures having high resistance materials of uniform or continuously varied thickness to form closed boundaries. The potential of these boundaries is continuously varied with respect to position in accordance with specified design criteria. The method and structures can be used in electron optical systems and related scientific instruments.

Abstract translation: 本发明包括通过使用具有均匀或连续变化厚度的高电阻材料的简单结构来获得精确的静电四极场的方法以形成闭合边界。 这些边界的潜力根据指定的设计标准而相对于位置而不断变化。 该方法和结构可用于电子光学系统及相关科学仪器。