摘要
为了研究电磁能量从脉冲功率驱动器到Z箍缩负载的传输与转化过程,采用电路模型描述驱动器关键部件的充放电过程,采用辐射磁流体模型描述负载的动力学过程并获取动态电感和动态电阻参数,建立了驱动器与负载耦合的全电路数值模拟程序.将该程序应用于"强光一号"装置,研究表明,模拟获得的驱动器电压波形、负载电流波形与实验结果符合较好,各段水介质传输线上电磁脉冲宽度逐级压缩,功率逐级放大.在典型的钨丝阵Z箍缩辐射源物理实验条件下,当初级储能电容器充电35 kV时,中储电容处的电磁功率(峰值)为0.23 TW,上升时间(10%—90%)为550 ns,形成线处的电磁功率为0.80 TW,上升时间为160 ns,水介质传输线末端的电磁功率为1.46 TW,上升时间为45 ns.负载电流为1.5 MA,产生的X射线辐射功率为0.58 TW.
In order to study the transportation and conversion of the electromagnetic energy from the pulsed power driver to Z-pinch load, a circuit model for the driver is analyzed, and coupled with magneto-hydrodynamics model for the load plasma. Our simulation results are compared with those obtained from circuit software and experimental results based on the“Qiangguang-I”facility. The simulated voltage and current waveform coincide well with the experimental results. Results show that the pulse width decreases and the peak increases as the pulse transmits from the storage capacitors to the pulse transmission line. When the storage capacitors are initially charged at 35 kV, the peak of electric powers at the transfer capacitor, the pulse forming line and the pulse output line are 0.23, 0.80 and 1.46 TW, respectively, and their rise-times （10%-90%） are 550, 160 and 45 ns, respectively. The load current is 1.5 MA and the X-ray radiation power is 0.58 TW.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2014年第12期219-227,共9页
Acta Physica Sinica
基金
国家自然科学基金(批准号:10975022
11275030
11105017
11135007
11305011)资助的课题~~
