RF Breakdown of the Resonant Reflector in a Relativistic Backward Wave Oscillator

被引：31
作者：
Cao, Yibing [1 ]
Sun, Jun [1 ]
Zhang, Yuchuan [1 ]
Song, Zhimin [1 ]
Wu, Ping [1 ,2 ]
Fan, Zhiqiang [1 ,2 ]
Teng, Yan [1 ]
He, Te [1 ]
Chen, Changhua [1 ]
机构：
[1] Northwest Inst Nucl Technol, Sci & Technol High Power Microwave Lab, Xian 710024, Shaanxi, Peoples R China
[2] Tsinghua Univ, Dept Engn Phys, Beijing 100084, Peoples R China
来源：
IEEE TRANSACTIONS ON PLASMA SCIENCE | 2018年 / 46卷 / 04期
基金：
中国国家自然科学基金;
关键词：
Anodic mechanism; high-power microwave (HPM); pulse shortening; radio frequency (RF) breakdown; EXPLOSIVE ELECTRON-EMISSION; FIELD-EMISSION; VACUUM BREAKDOWN; CATHODE; CAVITIES; ENHANCEMENT; MULTIPACTOR; OPERATION; DISCHARGE; MODEL;
D O I：
10.1109/TPS.2018.2810209
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
Radio frequency (RF) breakdown can result in pulse shortening and severely limits the performance of high-power microwave (HPM) generators. In this paper, the initial stage of RF breakdown in HPM generators with a strong external guiding magnetic field has been carefully analyzed. It is thought that the initial breakdown process involves electron emission induced by an intense local field, electron acceleration in the electric field, and electron bombardment on the structure's surfaces. Strong external guiding magnetic fields play a key role in the RF breakdown process of HPM generators. They concentrate the impact energy and make it more destructive. To suppress RF breakdown, feasible solutions include lowering the local field strength, decreasing the energy of the field-emitted electrons obtained from the RF field, reducing the deposited energy density, and improving the material's resistance to electron bombardment.
引用
收藏
页码：900 / 908
页数：9
相关论文
共 45 条
[1]   Electromigration occurences and its effects on metallic surfaces submitted to high electromagnetic field: A novel approach to breakdown in accelerators (vol 665, pg 54, 2011) [J].
Antoine, C. Z. ;
Peauger, F. ;
Le Pimpec, F. .
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2012, 670 :79-94
[2]   Initiation of explosive electron emission in microwave fields [J].
Barengolts, SA ;
Kreindel, MY ;
Litvinov, EA .
IEEE TRANSACTIONS ON PLASMA SCIENCE, 1998, 26 (03) :252-255
[3]   On priorities of cathode and anode contaminations in triggering the short-pulsed voltage breakdown in vacuum [J].
Batrakov, AV ;
Onischenko, SA ;
Proskurovsky, DI ;
Johnson, DJ .
IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION, 2006, 13 (01) :41-51
[4]   A powerful reflector in relativistic backward wave oscillator [J].
Cao, Yibing ;
Sun, Jun ;
Teng, Yan ;
Zhang, Yuchuan ;
Zhang, Lijun ;
Shi, Yanchao ;
Ye, Hu ;
Chen, Changhua .
PHYSICS OF PLASMAS, 2014, 21 (09)
[5]   Enhanced window breakdown dynamics in a nanosecond microwave tail pulse [J].
Chang, Chao ;
Zhu, Meng ;
Verboncoeur, John ;
Li, Shuang ;
Xie, Jialing ;
Yan, Kai ;
Luo, Tongding ;
Zhu, Xiaoxin .
APPLIED PHYSICS LETTERS, 2014, 104 (25)
[6]   Compact four-way microwave power combiner for high power applications [J].
Chang, Chao ;
Xiong, Zhengfeng ;
Guo, Letian ;
Wu, Xiaolong ;
Liu, Yansheng ;
Xing, Xiaoyue ;
Li, Zhiguo .
JOURNAL OF APPLIED PHYSICS, 2014, 115 (21)
[7]   ELECTRICAL BREAKDOWN BETWEEN METAL ELECTRODES IN HIGH VACUUM .I. THEORY [J].
CHARBONNIER, FM ;
BENNETTE, CJ ;
SWANSON, LW .
JOURNAL OF APPLIED PHYSICS, 1967, 38 (02) :627-+
[8]   Effect of electrode surface roughness on electrical breakdown in high voltage apparatus [J].
Choulkov, VV .
IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION, 2005, 12 (01) :98-103
[9]   Can low-energy electrons affect high-energy physics accelerators? [J].
Cimino, R ;
Collins, IR ;
Furman, MA ;
Pivi, M ;
Ruggiero, F ;
Rumolo, G ;
Zimmermann, F .
PHYSICAL REVIEW LETTERS, 2004, 93 (01) :014801-1
[10]   A model for effective field enhancement for Fowler-Nordheim field emission [J].
Feng, Y ;
Verboncoeur, JP .
PHYSICS OF PLASMAS, 2005, 12 (10) :1-6
12345