电子回流对高功率无箔二极管效率的影响

向飞; 罗敏; 李春霞; 罗光耀; 王朋

doi:10.11884/HPLPB201830.170321

电子回流对高功率无箔二极管效率的影响

doi: 10.11884/HPLPB201830.170321

中国工程物理研究院应用电子学研究所高功率微波技术重点实验室, 四川绵阳 621900

基金项目: 军科委资助课题

详细信息

作者简介:
向飞(1978—), 男, 硕士, 从事脉冲功率技术, yaneryan_2002@163.com

中图分类号: TN111
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- 被引次数: 0
出版历程
- 收稿日期: 2017-12-06
- 修回日期: 2018-07-08
- 刊出日期: 2018-12-15

Influence of electronic beam reflux on efficiency of high power foil less diode

Science and Technology on High Power Microwave Laboratory, Institute of Applied Electronics, CAEP, Mianyang 621900, China

摘要

摘要: 基于单电子在电磁场中的运动理论, 对某过模微波器件, 用无箔二极管通过分析其导引螺旋管磁场和电子发射区电场的分布与相互关系, 证明了电子回流与电子束传输效率密切相关。效率实验研究表明: 对大尺寸导引磁场, 不同半径薄环阴极发射电子束电功率有较大区别; 如果电子束半径小于50mm, 二极管效率大于95%;如果电子束半径大于90mm, 二极管效率小于75%。
- 高功率 /
- 无箔二极管 /
- 电子束传输效率 /
- 过模微波源
Abstract: This paper analyzes the distribution and correlation of electrical field and magnetic field located at the emission domain in the solenoid for the high power foil less diode using over-mode microwave device based the single electronic moving equations.It is confirmed that the electronic beam transmission efficiency is correlated with the reflux.The results from experimental research indicate that distinct power efficiency was explicated for the emission electronic beam from foil less diode with different radius cathode when the guiding magnetic field inside the magnetic solenoid was bigger.When the beam radius was 48 mm the electronic beam transmission efficiency was more than 95%, when the beam radius was more than 90 mm the efficiency was smaller than 75%.
- high power /
- foil less diode /
- electron beam transmission efficiency /
- overmoded microwave device

HTML全文

图 1 无箔二极管结构

Figure 1. Gemetry of foil less diode

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图 2 磁场分量间关系

Figure 2. Relation between magnetic components with different axial location

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图 3 电场分量间关系

Figure 3. Relation between electric components with different axial location

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图 4 电子回流

Figure 4. Electric inverse flow

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图 5 馈口电流

Figure 5. Feed-in electric flow

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图 6 输出口回流

Figure 6. Output electric flow

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图 7 典型实验波形

Figure 7. Typical experiment waveforms

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表 1 不同半径阴极电子束效率

Table 1. Electron efficiency with different radius cathode

diameter/mm	I_in/kA	I_out/kA	η/%
48	11.8	11.3	96
90	11.8	9.3	79
113	11.7	8.7	74

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表 2 不同半径阴极二极管功率

Table 2. Experimental result with different radius cathodes

diameter/mm	U/kV	I_r/kA	I_f/kA	η′/%
matching load	702	13.8
48	698		13.4	97
90	604		12.1	75
113	586		11.5	70

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