Alichkin E A, Pedos M S, Ponomarev A V, Rukin S N, Timoshenkov S P, Karelin S Y
Institute of Electrophysics, UB, RAS, Yekaterinburg 620016, Russia.
National Science Center "Kharkov Institute of Physics and Technology," Kharkiv 61108, Ukraine.
Rev Sci Instrum. 2020 Oct 1;91(10):104705. doi: 10.1063/5.0017980.
This article describes a picosecond solid-state pulsed system, where the input pulse from the generator with a semiconductor opening switch (SOS) is amplified in power and decreases in duration by ferrite gyromagnetic lines. The lines operate in the Magnetic Compression Line (MCL) mode, which occurs at close values of the input pulse duration and the period of the oscillations generated in the line. The energy compression system contains three successive stages-MCL1-MCL3 lines. For an input pulse power of 6 GW (490 kV, 40 Ω) and a duration of 7 ns, pulses of 54 GW (1.62 MV, 48 Ω) and a duration of 170 ps have been achieved at the MCL3 output. Compared to the parameters of the input pulse, the voltage rise rate has been increased ∼130 times up to 14.8 MV/ns, and the power rise rate has been increased ∼350 times up to 0.7 TW/ns. A numerical simulation of the MCL3 line operation in which the maximum electric and magnetic fields are realized (>2 MV/cm and >500 kA/m, respectively) has been carried out. The inner structure of the process of power amplification during the electromagnetic wave passage along the line has been demonstrated. First, the front of the input pulse is sharpened, and then, after the excitation of the oscillations, the process of power amplification begins, followed by the pulse amplitude reaching the saturation region.
本文描述了一种皮秒固态脉冲系统，其中来自带有半导体断路开关（SOS）的发生器的输入脉冲通过铁氧体旋磁线进行功率放大并缩短脉宽。这些线以磁压缩线（MCL）模式运行，该模式在输入脉冲持续时间与线中产生的振荡周期接近时出现。能量压缩系统包含三个连续阶段——MCL1 - MCL3线。对于6 GW（490 kV，40 Ω）的输入脉冲功率和7 ns的持续时间，在MCL3输出端实现了54 GW（1.62 MV，48 Ω）的脉冲和170 ps的持续时间。与输入脉冲参数相比，电压上升速率提高了约130倍，达到14.8 MV/ns；功率上升速率提高了约350倍，达到0.7 TW/ns。对MCL3线运行进行了数值模拟，其中实现了最大电场和磁场（分别大于2 MV/cm和大于500 kA/m）。展示了电磁波沿线传播过程中功率放大过程的内部结构。首先，输入脉冲前沿变陡，然后，在振荡激发后，功率放大过程开始，随后脉冲幅度达到饱和区域。
