<trans-title xml:lang="en">Influence of secondary electron emission characteristic of dielectric materials on microwave breakdown</trans-title>

Ming Weng; Shao-Yi Xie; Ming Yin; Meng Cao

doi:10.7498/aps.69.20200026

Acta Physica Sinica, Volume. 69, Issue 8, 087901-1(2020)

Influence of secondary electron emission characteristic of dielectric materials on microwave breakdown

Ming Weng¹, Shao-Yi Xie², Ming Yin¹, and Meng Cao^1、*

¹Key laboratory of Physical Electronics and Devices, Ministry of Education, School of Electronic and Informtion Engineering, Xi’an Jiaotong University, Xi’an 710049, China

²Northwest Institute of Nuclear Technology, Xi’an 710613, China

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Figures & Tables(9)

Fig. 1. The measured SEY of seven kinds of dielectric materials.

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Fig. 2. The diagram of the secondary electron energy spectrum.

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Fig. 3. The relationships of the steady state surface potential with the SEY and the spectrum parameter E_peak.

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Fig. 4. The relationships between the steady state surface potential and the incident electron energy.

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Fig. 5. The schematic diagram of parallel plate discharge system filled with dielectric layer.

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Fig. 6. The influence of V_dc on the minimum breakdown point at different pattern of the right boundary in suscep-tibility zone.

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Fig. 7. The influence of V_dc on the slope of the right boundary in susceptibility zone.

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Table 1.
SEY of seven kinds of dielectric materials
7种介质材料的SEY参数

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Table 1.
SEY of seven kinds of dielectric materials
7种介质材料的SEY参数

样品	PMMA	Al₂O₃	SiO₂	PTFE	PE	PI	Mica
δ_m	2.517	7.355	4.149	2.244	2.564	1.819	4.333
E_pm/eV	278.9	881.9	285.4	321.3	279.5	237.6	335.4
y	1.67	1.67	1.50	1.55	1.61	1.67	1.55
W₁/eV	56.8	58.8	35.0	75.4	56.2	70.2	38.6
W₂/eV	1599	25051	8045	2185	1960	837	7555

Table 2.
The characteristics of energy spectrum of seven kinds of materials.
7种材料的能谱特性
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Table 2.
The characteristics of energy spectrum of seven kinds of materials.
7种材料的能谱特性
材料 PMMA PTFE PE PI Al₂O₃ SiO₂ Mica
E_peak/eV 4.264 4.203 4.023 3.087 2.898 2.376 2.988
FWHM/eV 14.058 13.851 13.284 10.206 9.765 7.857 9.882

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Ming Weng, Shao-Yi Xie, Ming Yin, Meng Cao. Influence of secondary electron emission characteristic of dielectric materials on microwave breakdown[J]. Acta Physica Sinica, 2020, 69(8): 087901-1

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Paper Information

Category:

Received: Jan. 6, 2020

Accepted: --

Published Online: Nov. 24, 2020

The Author Email:

DOI:10.7498/aps.69.20200026

Topics

Nuclear physics

Particles and fields

Particle and nuclear astrophysics and cosmology

Table 1. SEY of seven kinds of dielectric materials7种介质材料的SEY参数

Table 1. SEY of seven kinds of dielectric materials7种介质材料的SEY参数

Table 2. The characteristics of energy spectrum of seven kinds of materials.7种材料的能谱特性

Table 2. The characteristics of energy spectrum of seven kinds of materials.7种材料的能谱特性

Table 1.
SEY of seven kinds of dielectric materials
7种介质材料的SEY参数

Table 1.
SEY of seven kinds of dielectric materials
7种介质材料的SEY参数

Table 2.
The characteristics of energy spectrum of seven kinds of materials.
7种材料的能谱特性

Table 2.
The characteristics of energy spectrum of seven kinds of materials.
7种材料的能谱特性