Faraday acceleration with radio-frequency assisted discharge
Faraday acceleration with radio-frequency assisted discharge
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DOI：
10.2514/1.16399
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发表时间：
2006-05
影响因子：
1.9
通讯作者：
E. Choueiri;K. Polzin
中科院分区：
文献类型：
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作者：
E. Choueiri;K. Polzin
提出了一种新的无电极加速器概念，该概念依赖于射频辅助放电、外加磁场和使用感应线圈的电磁加速。预电离等离子体的存在允许在比其他脉冲感应加速器概念中发现的放电电压和能量更低的放电电压和能量下形成电流片。在光学和探针诊断的支持下，已经构建并用于演示低电压、低能量电流片的形成和加速的概念验证实验。磁场数据表明，在 78.5 J 脉冲能量下运行的这种未优化配置中的峰值片材速度为 12 km/s。目视观察表明，等离子体跟随从射频放电到平面加速线圈表面的外加磁场，而使用快帧相机进行磁场探测和可视化则显示了电流片的形成和加速。
A new electrodeless accelerator concept that relies on an rf-assisted discharge, an applied magnetic field, and electromagnetic acceleration using an inductive coil is presented. The presence of a preionized plasma allows for current sheet formation at lower discharge voltages and energies than those found in other pulsed inductive accelerator concepts. A proof-of-concept experiment, supported by optical and probe diagnostics, has been constructed and used to demonstrate low-voltage, low-energy current sheet formation and acceleration. Magnetic field data indicate that the peak sheet velocity in this unoptimized configuration operating at a pulse energy of 78.5 J is 12 km/s. Visual observations indicate that plasma follows the applied magnetic field from the rf discharge to the face of the planar acceleration coil, while magnetic field probing and visualization using a fast-framing camera show the formation and acceleration of the current sheet.