Plasma glow dynamics of pulsed nitrogen discharge induced by the powerful terahertz waves

2015 40th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz) Pub Date : 2015-11-12 DOI:10.1109/IRMMW-THZ.2015.7327870
A. Vodopyanov, M. Glyavin, A. Luchinin, S. Razin, A. Sidorov, A. Fokin
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Abstract

We present the first results of studying a pulsed (20 μs) discharge in nitrogen, which is produced by high-power (40 kW) focused beam of terahertz (0.67 THz) waves. The time dynamics of the discharge plasma glowing is studied in a wide range of wavelengths (300-650 nm) and gas pressures (0.5-350 Torr). An assumption is made about the determining role of long-living metastables of nitrogen N2 (A3Σu+) in the observed dynamics of the discharge afterglow.
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强太赫兹波诱导脉冲氮放电的等离子体辉光动力学
我们首次研究了高功率(40千瓦)聚焦太赫兹(0.67太赫兹)波束在氮中产生的脉冲(20 μs)放电。研究了放电等离子体在宽波长(300 ~ 650 nm)和气体压力(0.5 ~ 350 Torr)范围内发光的时间动力学特性。提出了长寿命亚稳态氮(A3Σu+)在放电余辉动力学中起决定作用的假设。
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2015 40th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz)
2015 40th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz)
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