石墨型高能两电极气体开关  

High power graphite two-electrode spark gap switch

作　　者：郭良福[1] 李黎[2] 赖贵友[1] 林福昌[2] 陈德怀[1] 力一峥[1] 李冬梅[1] 栾永平[1] 

机构地区：[1]中国工程物理研究院,激光聚变研究中心,四川绵阳6219001 [2]华中科技大学,电气与电子工程学院,武汉430074

出　　处：《强激光与粒子束》2010年第12期3034-3038,共5页High Power Laser and Particle Beams

摘　　要：为大型激光装置能源模块研制了一种采用石墨电极的两电极气体开关,阐述了石墨应用于高能两电极气体开关的技术关键,对气体开关中气体间隙的最优结构进行了电场强度分析。参考美国国家点火装置(NIF)能源模块中ST-300气体开关的已知参数,对研制成功的石墨型两电极开关进行了电气特性试验,证明了石墨型气体开关能够实现峰值电流达300 kA以上,单次转移电荷量100 C以上,寿命超过1 000次,满足1.2 MJ大型激光装置能源模块的工程技术要求。Two-electrode spark gap switch is an important candidate for the switching element of huge high laser power supply systems. This paper presents the using condition and critical technology of graphite two-electrode spark gap switch. The electrical field strength simulation shows that the electrode shape which satisfies Borda profile could constitute the optimized spark gap. Referred to the known parameters about the ST-300 switch used in NIF, a series of electric tests have been done. The tests have proved that the graphite two-electrode spark gap switch can support 300 kA peak pulse current, with over 100 C transfer charge and over 1000 shots of lifetime, therefore meeting the requirement of the 1. 2 MJ huge laser power supply system.

关 键 词：石墨型 高能 石墨电极 气体开关 spark gap switch power 能源模块 激光装置 转移电荷量 最优结构 模块研制 特性试验 强度分析 气体间隙 技术要求 技术关键 峰值电流 点火装置 证明 寿命 

分 类 号：O4[理学—物理]