摘要
输出参数为500 kV/400 kA/100 ns的快速z箍缩（z-pinch）装置由Marx发生器、脉冲形成线、充气型V/N主开关、传输线及负载组成.z箍缩负载分别采用氖气喷气负载及金属单丝负载.为了判断主放电时负载的初始状态,该文建立了z箍缩装置的充电等效电路模型,并借助Pspice电路模拟软件计算了形成线充电期间在负载上获得的预脉冲波形.通过分析可知： pd值为1～10 Pa·m左右的氖气负载,在装置预脉冲电压的作用下将被击穿;而直径为20 μm、长度为1 cm的Al（铝）或W（钨）单丝负载,装置预脉冲电流将不能使之汽化.
A 500 kV/400 kA/100 ns z-pinch device was constructed using a Marx generator, a pulse forming line （PFL）, a gas-filled V/N field distortion switch, a transfer line, and a z-pinch load, The initial load state at the beginning of the main discharge was modeled with an equivalent charging circuit of the z-pinch device. The prepulses for the z-pinch neon gas-puff load and the single wire load were both analyzed using Pspice. The calculations show that the neon gas would break down at a pd of 1 - 10 Pa · m with the prepulse voltage and that aluminium or tungsten wires with diameters of 20 μm and length of 1 cm would not be vaporized by the prepulse current.
出处
《清华大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2006年第10期1653-1656,共4页
Journal of Tsinghua University(Science and Technology)
基金
国家自然科学重点基金资助项目(10035030)
中国博士后科学基金项目(2004035002)
关键词
Z箍缩
单丝
喷气
预脉冲
z-pinch
single wire
gas-puff
prepulse
