Electron beam pulses produced by helicon‐wave excitation
Electron beam pulses produced by helicon‐wave excitation
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螺旋波激发产生的电子束脉冲
DOI：
10.1063/1.871334
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发表时间：
1995
影响因子：
2.2
通讯作者：
N. Sadeghi
中科院分区：
文献类型：
--
作者：
A. Ellingboe;R. Boswell;J. Booth;N. Sadeghi
用13.56 MHz螺旋天线激发的圆柱形氩磁等离子体中443 nm Ar+谱线的发射强度在激发频率处被强烈调制。光发射的峰值以与天线发射的螺旋波的速度相对应的速度在轴向方向上传播。的时空调制是一致的加速下的天线和随后的夹带这些电子超过一半的捕获周期中的螺旋波的轴向电场中产生的电子脉冲。
The 443 nm Ar+ line emission intensity in a cylindrical argon magnetoplasma excited by a 13.56 MHz helicon antenna is found to be strongly modulated at the excitation frequency. The peak in optical emission propagates in the axial direction at a velocity corresponding to that of helicon waves launched by the antenna. The spatiotemporal modulation is consistent with pulses of electrons produced by acceleration under the antenna and subsequent entrainment of these electrons over half of a trapping period in the axial electric field of the helicon wave.