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Optical Emission Spectroscopy Observations Of Fast Pulsed Capillary Discharge Plasmas

机译:快速脉冲毛细管放电等离子体的光发射光谱观察

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We present time resolved optical emission spectroscopic (OES) observations of a low energy, pulsed capillary discharage (PCD). The optical emission from the capillary plasma and plasma jets emitted from the capillary volume was recorded with with a SpectraPro 275 spectrograph, fitted with a MCP gated OMA system, with 15 ns time resolution. The discharge was operated with different gases, including argon, nitrogen, hydrogen and methane, in a repetitive pulsed discharge mode at 10-50 Hz, with, 10-12 kV pulses applied at the cathode side. The time evolution of the electron density was measured using Stark broadening of the H_β line. Several features of the capillary plasma dynamics, such as ionization growth, wall effects and plasma jet evolution, are inferred from the time evolution of the optical emission.
机译:我们现在存在时间分辨的光发射光谱(OES)观察低能量,脉冲毛细管放电(PCD)。从毛细管体积发射的毛细管等离子体和等离子体射流的光学发射用Spectrapro 275光谱仪记录,配有MCP门控OMA系统,具有15 ns时间分辨率。通过在10-50Hz的重复脉冲放电模式下,用不同的气体,包括氩气,氮气,氢气和甲烷,在10-50赫兹,在阴极侧施加10-12kV脉冲,以不同的气体,包括氩气,氮气,氢气和甲烷。使用H_β线的STAKARAP扩展测量电子密度的时间进化。从光发射的时间演变推断出毛细管等离子体动力学的几个特征,例如电离生长,壁效应和等离子体射流演化。

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