Electron gun device for mercury ion microwave frequency standard
An electron gun, mercury ion technology, applied in electron/ion optical device, electron source of separation tube, parts of particle separator tube, etc., can solve the problems of large divergence angle, complicated use, large volume, etc. Easy miniaturization, small volume effect
Pending Publication Date: 2021-03-30
BEIJING INST OF RADIO METROLOGY & MEASUREMENT
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[0004] The object of the present invention is to provide an electron gun device for mercury ion microwave frequency standards, to solve the problems of large volume, complicated use and large divergence angle of electron guns for mercury ion microwave frequency standards.
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[0020] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in conjunction with specific embodiments of the present application and corresponding drawings. Apparently, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.
[0021] The technical solutions provided by various embodiments of the present application will be described in detail below in conjunction with the accompanying drawings.
[0022] Such as figure 1 As shown, the electron gun device for mercury ion microwave frequency standard provided by the present invention includes: flange 1, cathode filament 2, an...
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The invention discloses an electron gun device for a mercury ion microwave frequency standard. The electron gun device comprises a flange, a cathode filament, an anode structure and an ion trap structure which are assembled in sequence. A flange electrode is externally connected with an electron gun circuit, so that the cathode filament is in negative voltage relative to the anode structure; the anode structure is a stainless steel annular plate with a hole in the center, and the plane of the plate is perpendicular to the electron beam emitting direction of the cathode filament; the anode structure is fixed to the flange through an anode supporting structure; the ion trap structure comprises a column electrode and a cap electrode, and a hole is formed in the center of the cap electrode, sothat an electron beam can enter the center of the ion trap; the ion trap structure is fixedly connected with the anode structure through an ion trap supporting structure, and the cross section of theion trap is concentric with the anode structure. The device solves the problems that an existing electron gun for the mercury ion microwave frequency standard is large in size, is complex to use, islarge in divergence angle and the like.
Description
technical field [0001] The present application relates to the technical field of microwave measurement, in particular to an electron gun device used for a mercury ion microwave frequency standard. Background technique [0002] Mercury ion microwave frequency standard is a new type of frequency standard, which adopts a new working principle different from traditional atomic frequency standards such as hydrogen, rubidium and cesium. It has the inherent characteristics of being basically not disturbed by physical particles and external fields, small motion effects and long coherence time of quantum states. The spectral line width is extremely narrow, and various frequency shifts are small. One of the main reasons is that by applying an electrostatic field, magnetic field or radio frequency field to the ion trap, the working ions are trapped in the center of the ultra-high vacuum ion trap, so that the ions are completely isolated and in a "completely static state" without extern...
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Login to View More IPC IPC(8): H01J49/06H01J49/08
CPCH01J49/062H01J49/08
Inventor 王暖让赵环陈星薛潇博张升康
Owner BEIJING INST OF RADIO METROLOGY & MEASUREMENT