依据微空心阴极自持的辉光放电结构,设计了一款新颖的微小放电结构.用空气进行了有关的放电实验,稳定的直流辉光放电,放电气压最大能够达到66.7 kPa.放电的伏安特性具有正的斜坡,放电能够稳定地运行,而不需要个体镇流电阻.在气压为40 kPa和放电电流为60 mA时,放电等离子体中的电流密度估计为0.048 A/cm2,功率密度估计为52.8 W/cm3,电子密度估计为2.7×1013 cm-3.实验结果表明:这种高气压、大体积、高电子密度的放电等离子体能够用作小型激光器的工作介质.
A novel mini-device was designed on the base of the configuration of micro-hollow cathode sustained glow discharge (MCSD). The discharge experiment was carried out with air, and the stable direct-current glow discharge was formed at pressure up to 66.7 kPa. The voltage-current characteristics showed a positive slope, and the discharges can operate stably without individual ballasting resistors. The estimated current density is 0.048 A/cm2, and the estimated power density is 52.8 W/cm3 at 40 kPa and 60 mA. The estimated electron density is 2.7×1013cm-3 in the discharge plasmas. The high-pressure, large-volume, high electron density plasmas can be used as the media of mini-laser.
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