Formula of microwave breakdown electric field calculation within wide pressure range in air

Liu Wan; Weng Ming; Yin Ming; Xu Weijun; Wang Fang; Cao Meng

doi:10.11884/HPLPB201830.180086

Volume 30 Issue 11

Nov. 2018

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Liu Wan, Weng Ming, Yin Ming, et al. Formula of microwave breakdown electric field calculation within wide pressure range in air[J]. High Power Laser and Particle Beams, 2018, 30: 113001. doi: 10.11884/HPLPB201830.180086

Citation:

Liu Wan, Weng Ming, Yin Ming, et al. Formula of microwave breakdown electric field calculation within wide pressure range in air[J]. High Power Laser and Particle Beams, 2018, 30: 113001. doi: 10.11884/HPLPB201830.180086

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Formula of microwave breakdown electric field calculation within wide pressure range in air

doi: 10.11884/HPLPB201830.180086

Key Laboratory of Physical Electronics and Devices, Ministry of Education, Xi'an Jiaotong University, Xi'an 710049, China

Received Date: 2018-03-23
Rev Recd Date: 2018-07-23
Publish Date: 2018-11-15

Abstract

Abstract

For calculating microwave breakdown electric field in air simply and instantly, we give a new formula adopting characteristic diffusion length, which is combined with basic parameters in gas discharge and based on electron diffusion model. We fit the relationship between equivalent direct-current electric field and characteristic diffusion length from experiment recorded by A D Macdonald (1966), thus to avoid the influence of uncertainty of gas parameters on calculation accuracy. According to the definition of equivalent direct-current electric field, we give another formula to calculate breakdown electric field, which applies to a high air pressure. Also, in consideration of electric diffusion model and vacuum multipactor discharge based on secondary electron emission, we further give a formula applicable to a wide air pressure range by using a rational equivalent diffusion length. Compared with the formula by Yu Ming (2007), our results are more consistent with Macdonald's experimental value.
- microwave breakdown,
- equivalent diffusion length,
- characteristic diffusion length,
- gas discharge,
- microwave,
- secondary electron emission

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References(21)

References

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