Suppression of high-power microwave dielectric multipactor by resonant magnetic field

被引：75
作者：
Chang, C. [1 ]
Liu, G. Z. [2 ]
Tang, C. X. [1 ]
Chen, C. H. [2 ]
Shao, H. [2 ]
Huang, W. H. [2 ]
机构：
[1] Tsinghua Univ, Dept Engn Phys, Beijing 100084, Peoples R China
[2] NW Inst Nucl Technol, Xian 710024, Shannxi, Peoples R China
来源：
APPLIED PHYSICS LETTERS | 2010年 / 96卷 / 11期
关键词：
electron-surface impact; flashover; high-frequency discharges; secondary electron emission; vacuum breakdown; FLASHOVER; BREAKDOWN;
D O I：
10.1063/1.3360853
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Through dynamic calculation and electromagnetic particle-in-cell simulation, high-power microwave dielectric multipactor is discovered to be suppressed by utilizing external dc magnetic field parallel to the surface, perpendicular to the rf field and satisfying the gyrofrequency close to the rf frequency similar to omega. It is found that multipactor electrons emitted from the surface can be resonantly accelerated to obtain the impact energy epsilon(e) higher than the second crossover energy, leading to secondary emission yield lower than one. Besides, the corresponding flight time gets close to the rf period, also the period of the vector E(rf)xB, resulting in secondary electrons immediately pulled away without multipactoring along the surface. What is more, with the rf field increasing, suppression effect can be further enhanced due to epsilon(e) rising.
引用
收藏
页数：3
相关论文
共 12 条
  • [1] Suppressing high-power microwave dielectric multipactor by the sawtooth surface
    Chang, C.
    Liu, G. Z.
    Huang, H. J.
    Chen, C. H.
    Fang, J. Y.
    [J]. PHYSICS OF PLASMAS, 2009, 16 (08)
  • [2] The effect of grooved surface on dielectric multipactor
    Chang, C.
    Huang, H. J.
    Liu, G. Z.
    Chen, C. H.
    Hou, Q.
    Fang, J. Y.
    Zhu, X. X.
    Zhang, Y. P.
    [J]. JOURNAL OF APPLIED PHYSICS, 2009, 105 (12)
  • [3] Hemmert D, 2000, IEEE T PLASMA SCI, V28, P472, DOI 10.1109/27.887650
  • [4] Observation of large arrays of plasma filaments in air breakdown by 1.5-MW 110-GHz gyrotron pulses
    Hidaka, Yoshiteru
    Choi, E. M.
    Mastovsky, I.
    Shapiro, M. A.
    Sirigiri, J. R.
    Temkin, R. J.
    [J]. PHYSICAL REVIEW LETTERS, 2008, 100 (03)
  • [5] THE INFLUENCE OF MAGNETIC-FIELDS ON DIELECTRIC SURFACE FLASHOVER
    KORZEKWA, R
    LEHR, FM
    KROMPHOLZ, HG
    KRISTIANSEN, M
    [J]. IEEE TRANSACTIONS ON ELECTRON DEVICES, 1991, 38 (04) : 745 - 749
  • [6] Monte Carlo simulation of high power microwave window breakdown at atmospheric conditions
    Krile, John T.
    Neuber, Andreas A.
    Krompholz, Hermann G.
    Gibson, Thomas L.
    [J]. APPLIED PHYSICS LETTERS, 2006, 89 (20)
  • [7] Scaling laws for dielectric window breakdown in vacuum and collisional regimes
    Lau, Y. Y.
    Verboncoeur, J. P.
    Kim, H. C.
    [J]. APPLIED PHYSICS LETTERS, 2006, 89 (26)
  • [8] MAGNETIC-FIELD EFFECTS ON VACUUM INSULATOR FLASHOVER
    LEHR, M
    KORZEKWA, R
    KROMPHOLZ, H
    KRISTIANSEN, M
    [J]. JOURNAL OF APPLIED PHYSICS, 1992, 71 (01) : 389 - 394
  • [9] Effect of electron energy distribution function on the global model for high power microwave breakdown at high pressures
    Nam, Sang Ki
    Verboncoeur, John P.
    [J]. APPLIED PHYSICS LETTERS, 2008, 92 (23)
  • [10] Initiation of high power microwave dielectric interface breakdown
    Neuber, A
    Hemmert, D
    Krompholz, H
    Hatfield, L
    Kristiansen, M
    [J]. JOURNAL OF APPLIED PHYSICS, 1999, 86 (03) : 1724 - 1728
12