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The dielectric surface breakdown has become a major factor of restricting the output power of high power microwave source. And the multipactor is the key phase of the process of the dielectric surface breakdown. In this paper, the multipactors in external magnetic fields with different strengths are simulated by using the particle-in-cell method. And the effect of the external magnetic field on multipactor is also studied. The results show that when the external magnetic field reaches a certain value, the multipactor is suppressed in the half time of the microwave transmission. So the power capability can be increased to more than four times through the suppression of the multipactor by the external magnetic field under the ideal condition.
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Keywords:
- multipactor /
- external magnetic field /
- dielectric surface breakdown /
- numerical simulation
[1] Shao H,Liu G Z 2001 Acta Phys.Sin.50 2387 (in Chinese)[邵浩,刘国治 2001 物理学报 50 2387]
[2] Barker R J,Schamiloglu E (Translated by Zhou CM,Liu G Z et al)2004 High-Power Microwave Sources and Technologies (Beijing:Tsinghua University Press )p313—322,p350(in Chinese)[罗伯特 J.贝克,E.谢米洛格鲁 著 (周传明,刘国治等译)2004高功率微波源与技术(北京:清华大学出版社)第313-322,350页]
[3] Vaughan R M 1988 IEEE Trans.Electron Dev.35 1172
[4] Kishek R A,Lau Y Y 1998 Phys.Rev.Lett.80 193
[5] Kim H C,Verboncoeur J P 2006 Phys.Plasma 13 123506
[6] Cai L B,Wang J G 2011 Acta Phys.Sin.60 025217 (in Chinese)[蔡利兵,王建国 2011 物理学报 60 025217]
[7] Valfells A,Ang L K,Lau Y Y,Gilgenbach RM2000 Phys.Plasma 7 750
[8] Sazontov A G,Nevchaev V E 2010 Phys.Plasma 17 033509
[9] Chang C,Liu G Z,Tang C X,Chen C H,Shao H,Huang W H 2010 Appl.Phys.Lett.96 111502
[10] Fu Z F,Hu Y Q 1995 Numerical Simulation of Space Plasma (Hefei:Anhui Science and Technology Publishers)p433—476 (in Chinese)[傅竹风,胡友秋 1995 空间等离子体数值模拟(合肥:安徽科学技术出版社)第433-476页]
[11] Vaughan R M 1993 IEEE Trans.Electron Dev.40 830
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[1] Shao H,Liu G Z 2001 Acta Phys.Sin.50 2387 (in Chinese)[邵浩,刘国治 2001 物理学报 50 2387]
[2] Barker R J,Schamiloglu E (Translated by Zhou CM,Liu G Z et al)2004 High-Power Microwave Sources and Technologies (Beijing:Tsinghua University Press )p313—322,p350(in Chinese)[罗伯特 J.贝克,E.谢米洛格鲁 著 (周传明,刘国治等译)2004高功率微波源与技术(北京:清华大学出版社)第313-322,350页]
[3] Vaughan R M 1988 IEEE Trans.Electron Dev.35 1172
[4] Kishek R A,Lau Y Y 1998 Phys.Rev.Lett.80 193
[5] Kim H C,Verboncoeur J P 2006 Phys.Plasma 13 123506
[6] Cai L B,Wang J G 2011 Acta Phys.Sin.60 025217 (in Chinese)[蔡利兵,王建国 2011 物理学报 60 025217]
[7] Valfells A,Ang L K,Lau Y Y,Gilgenbach RM2000 Phys.Plasma 7 750
[8] Sazontov A G,Nevchaev V E 2010 Phys.Plasma 17 033509
[9] Chang C,Liu G Z,Tang C X,Chen C H,Shao H,Huang W H 2010 Appl.Phys.Lett.96 111502
[10] Fu Z F,Hu Y Q 1995 Numerical Simulation of Space Plasma (Hefei:Anhui Science and Technology Publishers)p433—476 (in Chinese)[傅竹风,胡友秋 1995 空间等离子体数值模拟(合肥:安徽科学技术出版社)第433-476页]
[11] Vaughan R M 1993 IEEE Trans.Electron Dev.40 830
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