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Ferroelectric cathode test system and method

A test system and test method technology, applied in the field of ferroelectric cathodes, can solve the problem of difficult to measure the real emission current signal, etc., and achieve the effects of strong electromagnetic interference shielding ability, good anti-electromagnetic interference performance, and high test sensitivity

Inactive Publication Date: 2020-07-24
XIAN UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the influence of ground current coupling and other electromagnetic interference on the test signal, it is often difficult to measure the real emission current signal

Method used

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  • Ferroelectric cathode test system and method
  • Ferroelectric cathode test system and method
  • Ferroelectric cathode test system and method

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Embodiment Construction

[0057] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0058] According to one aspect of the present invention, a ferroelectric cathode testing system is provided.

[0059] refer to figure 1 ,Such as figure 1 As shown, a ferroelectric cathode test system includes a high-voltage pulse power supply, a vacuum chamber, an emission current test circuit, and a sample voltage test circuit;

[0060] The high-voltage pulse power supply is respectively connected to one end of the vacuum chamber and the sample voltage test circuit;

[0061] The emission current test circuit is connected to the other end of the vacuum chamber;

[0062] The sample voltage testing...

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Abstract

The invention discloses a ferroelectric cathode test system and method, and relates to ferroelectric cathodes. The ferroelectric cathode test system comprises a high-voltage pulse power supply, a vacuum chamber, an emission current test circuit and a sample voltage test circuit. The high-voltage pulse power supply is connected with one end of the vacuum chamber and the sample voltage test circuit;the emission current test circuit is connected with the other end of the vacuum chamber; and the sample voltage test circuit is connected with an oscilloscope. According to the ferroelectric cathodetest system and method, the electromagnetic interference problem of the ferroelectric cathode test system is properly solved through the modes of concurrent grounding, shielding, double-end matching,line connection, equipment arrangement and the like.

Description

technical field [0001] The invention relates to a ferroelectric cathode, in particular to a ferroelectric cathode testing system and method. Background technique [0002] At present, the ferroelectric cathode is a new type of electron emission cathode that obtains pulsed electron beams from the surface of ferroelectric materials under external excitation (rapid heating, mechanical pressure, laser pulse and high voltage pulse, etc.). Compared with traditional cathode technology, ferroelectric cathode has the advantages of high emission current density, excellent electron beam, normal temperature emission, and no fear of poisoning. The above advantages make ferroelectric cathodes have potential application value in high-current electron beam cathode technology. [0003] For high-current ferroelectric cathode materials, electron emission current and emission current density are key indicators for studying the electron emission performance of ferroelectric cathode materials. T...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R1/18G01R31/00G01R19/00
CPCG01R1/18G01R31/00G01R19/00
Inventor 王新霞王党树
Owner XIAN UNIV OF SCI & TECH