Plasma creation by a powerful electromagnetic radiation of terahertz gyrotrons

V. Bratman, Y. Kalynov, V. A. Koldanov, A. Litvak, S. Razin, A. Sidorov, V. Skalyga, V. Zorin
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Abstract

Summary from only given. The study of the discharge in a focused beam of terahertz radiation in argon at pressures close to atmospheric was made. The range of breakdown electric fields and gas pressures at which the discharge occurs was determined. Discharge, had started at the focus of the beam, propagated in the region of weak fields, where the value of the intensity was substantially less than the breakdown one. The investigation of the discharge glow dynamics was made and it was shown that its front had moved towards the radiation with the speed of about 105 cm/sec. The estimation of the plasma density was made on the basis of the terahertz wave transmission coefficient measurements, and the value of the density exceeded the value of 1015 cm-3. The features of the discharge excited by radiation of the terahertz frequency range and its possible applications are discussed.
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由太赫兹回旋管的强大电磁辐射产生的等离子体
摘要仅供参考。对氩气中太赫兹辐射聚焦束在接近大气压力下的放电进行了研究。确定了发生放电的击穿电场和气体压力的范围。放电从光束的焦点处开始,在弱场区域传播,在弱场区域的强度值基本上小于击穿的强度值。对放电辉光动力学进行了研究,结果表明,放电辉光的锋面以约105 cm/s的速度向辐射方向移动。在太赫兹波透射系数测量的基础上对等离子体密度进行了估计,密度值超过了1015 cm-3。讨论了太赫兹辐射激发放电的特性及其可能的应用。
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