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大气压氦气介质阻挡放电倍周期分岔及混沌现象的实验验证
Experimental confirmation on period-doubling bifurcation and chaos in dielectric barrier discharge in helium at atmospheric pressure
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摘要: 采用具有平行电极结构的介质阻挡放电装置，在大气压氦气条件下进行了一系列放电实验，观察了放电波形并对其进行了频谱分析．结果表明，在一定条件下随外施电压幅值的增加，大气压氦气均匀介质阻挡放电会由周期一态放电经周期二态、周期四态放电进入混沌态放电．研究验证了大气压氦气介质阻挡放电经倍周期分岔路径通向混沌的现象，不仅仅出现在数值仿真中，在现实实验中也是确实存在的．Abstract: A series of dielectric barrier discharge (DBD) experiments in helium at atmospheric pressure is carried out under a parallel electrode configuration. The discharge waveforms are observed in time-domain and analyzed in frequency-domain. Results show that under a certain condition the discharge can experience period-one, period-two and period-four discharges and finally enters into chaotic discharge as the amplitude of the driving voltage is increased. Our work verifies that the period-doubling route into chaos in DBD at atmospheric helium pressure can observed in experiment, beside in numerical simulations.
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