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Device and method for automatically measuring surface potential under particle bombardment

A surface potential and automatic measurement technology, which is applied in the direction of measuring devices, electrostatic field measurement, and material analysis through electromagnetic means, can solve problems such as electrostatic discharge and discharge threshold drop

Active Publication Date: 2019-09-24
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The design of current space equipment usually only considers the highest voltage that may be reached in the natural environment. If there are special and complex space environmental factors, it is easy to induce electrostatic discharge and cause the discharge threshold to drop significantly.

Method used

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  • Device and method for automatically measuring surface potential under particle bombardment
  • Device and method for automatically measuring surface potential under particle bombardment

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Embodiment Construction

[0030] The technical solution of the present disclosure will be described in detail below with reference to the drawings and embodiments.

[0031] Such as figure 1 As shown, the present disclosure provides an automatic measurement device for surface potential under particle bombardment, including:

[0032] An air pumping module, the air pumping module includes a mechanical pump 1 and a molecular pump 2, the mechanical pump 1 and the molecular pump 2 are connected to the vacuum chamber through pipelines, and are used to extract the gas in the vacuum chamber to reduce the air pressure to 10 -6 Below Pa;

[0033] Charging module, described charging module comprises pulse signal generator 3, electron gun 4 and ion gun 5, wherein, described pulse signal generator 3 is positioned at vacuum chamber, and described electron gun 4 is positioned at vacuum chamber and described pulse signal generator 3 The first pulse output end of the ion gun 5 is connected to the first pulse output en...

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Abstract

The invention discloses a device for automatically measuring surface potential under particle bombardment. The device comprises an air exhaust module, a charging module and a potential measuring module. The invention also discloses a method for automatically measuring surface potential under particle bombardment. According to the invention, the electrostatic discharge mechanism of space equipment under the action of space electrons and ions in a complex multi-factor environment can be studied; by recording the surface potential of a sample, a basis can be provided for researching the charging characteristics of the sample surface.

Description

technical field [0001] The disclosure belongs to the technical field of automatic measurement of surface potential under particle bombardment, and in particular relates to a device and method for automatic measurement of surface potential under particle bombardment. Background technique [0002] The electrostatic discharge caused by the charging effect of space equipment is one of the main reasons for the failure of spacecraft missions. Despite a relatively adequate protection design, abnormalities caused by spacecraft discharges caused by environmental factors such as geomagnetic substorms and space plasmas still occur frequently, and the specific causes and locations of discharges are difficult to clarify. The charging and discharging effect of spacecraft is the basis and necessary condition for electrostatic discharge, which directly restricts the research progress of electrostatic discharge. [0003] Spacecraft charging refers to the process in which a spacecraft or rel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R29/12G01N27/00
CPCG01N27/00G01R29/12
Inventor 宋佰鹏周润东孙光宇杨宁张舒郭宝烘穆海宝张冠军
Owner XI AN JIAOTONG UNIV
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