公开(公告)号：US10262846B2

公开(公告)日：2019-04-16

申请号：US15748022

申请日：2016-07-14

Applicant: ETP ION DETECT PTY LTD

Inventor： Richard Stresau

IPC: H01J43/10 ,  H01J43/14

Abstract: An apparatus for generating and focusing electrons is provided. The apparatus has an emissive material configured to emit an electron, an electron target, and an electrical potential gradient generator configured to generate an electrical potential gradient within the emissive material. The electrical potential gradient is oriented so as to vary from positive to negative in the general direction toward the electron target. In operation, an electron emitted from the emissive materials is deflected away from the emissive material and generally toward the electron target. The apparatus may be incorporated in scientific analytical equipment such as an electron multiplier.