| 冯静,杨德正,张丽,王森,袁皓,赵紫璐,周雄峰,王文春.大气压氧气中稳定形态气液放电等离子体特性研究[J].,2019,59(2):118-123 |
| 大气压氧气中稳定形态气液放电等离子体特性研究 |
| Study of characteristics for stable gas-liquid discharge plasma in oxygen at atmospheric pressure |
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| DOI：10.7511/dllgxb201902002 |
| 中文关键词:气液放电氧等离子体电容模式转化温度 |
| 英文关键词:gas-liquid dischargeoxygen plasmacapacitormode transitiontemperature |
| 基金项目:国家自然科学基金资助项目(51407022,51677019,51377014);国家重点研发计划项目(2016YFC0207200). |
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| 中文摘要: |
| 通过在放电回路中连接电容来控制放电电荷数目并得到稳定的氧等离子体.利用测量的电压电流波形和放电图像的变化分析了放电模式在不同应用电压下的转化过程.根据等离子体发射光谱计算了各种活性物种的发射光谱强度,模拟了等离子体气体温度、振动温度的变化过程.结果表明:随着应用电压的增加,等离子体放电模式在电压正半周明显地从流光放电转化为辉光放电最后转化为弧光放电,在电压负半周从电晕放电转化为弧光放电.在放电回路中加入电容可以限制单次放电的电荷数目,提高放电的稳定性.与放电模式的转化相对应,等离子体的气体温度先增加后不变. |
| 英文摘要: |
| A suitable capacitor was employed in the discharge circuit to quantify the charge number and generate a stable diffusion oxygen plasma. Dynamic evolution of electrical characteristics of voltage and current waves and discharge images were measured to investigate the discharge modes and their transitions when the discharge parameter of applied voltage was changed. The plasma gas temperature, vibrational temperature and emission intensity of excited active species were calculated and simulated by optical emission spectra. It is found that an obvious transition from streamer mode to glow mode and then to arc mode in a single voltage positive half cycle and another mode transition from corona mode to arc mode in negative half cycle are generated with the increasing of applied voltage. The capacitor added in discharge circuit can regulate the releasing quantity of electron in once discharge to improve the discharge stability. Furthermore, corresponding with the transitions of discharge modes, the plasma gas temperature increases first and then remains stable. |
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