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核聚变与等离子体物理 ›› 2008, Vol. 28 ›› Issue (1): 90-93.

• 等离子体应用 • 上一篇    下一篇

等离子体对高功率微波的防护

杨 耿,谭吉春,盛定仪,杨雨川   

  1. (国防科技大学理学院,长沙 410073)
  • 收稿日期:2007-03-15 修回日期:2007-08-23 出版日期:2008-03-15 发布日期:2011-04-07
  • 作者简介:杨耿(1984-),男,湖北省人,硕士,主要从事高功率微波防护方面的研究。
  • 基金资助:

    武器装备预研基金资助项目(51421-KG0152)

Protection against high power microwave using plasma

YANG Geng, TAN Ji-chun, SHENG Ding-yi, YANG Yu-chuan   

  1. (Science college, National University of Defense Technology, Changsha 410073)
  • Received:2007-03-15 Revised:2007-08-23 Online:2008-03-15 Published:2011-04-07

摘要:

提出了用等离子体防护高功率微波破坏电子设备的方法。建立了“介质层-等离子体层-介质层-等离子体层”的反射/吸收模型,其中两层均匀非磁化等离子体厚度各为50mm,等离子体频率为30GHz,等离子碰撞频率为70GHz。计算了微波的透射功率、防护结构的最小防护距离。计算结果表明:对功率10GW、脉冲宽度100ns、天线100m2 (效率50%)的微波源产生的微波,频率小于30GHz时,将被防护装置反射;频率为31~80GHz时,防护结构的最小防护距离约为5km。

关键词: 高功率微波, 等离子体, 透射功率, 防护

Abstract:

Protection against high power microwave using plasma was proposed. A reflection/absorption sandwich model of “medium slab-plasma slab-medium slab-plasma slab” was established, where the thickness for the un-magnetized uniform plasma is 50mm, the plasma frequency 30GHz, and collision frequency 70GHz. Then the transmitted power of electromagnetic wave and the minimal protecting-distance of protector were calculated. The results show that for a microwave source with 10GW power, 100ns pulse width, 100m2 antenna area (with efficiency of 50%), the emitted microwave will be reflected when the frequency is less than 30GHz; or the minimal protecting-distance of protector is about 5km when the frequency is within 31~80GHz.

Key words: HPM, Plasma, Transmitted power, Protection

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