Uchida Giichiro, Takenaka Kosuke, Miyazaki Atsushi, Kawabata Kazufumi, Setsuhara Yuichi
J Nanosci Nanotechnol. 2015 Mar;15(3):2324-9. doi: 10.1166/jnn.2015.10232.
We present here experiments on helium atmospheric dielectric-barrier discharge jet in open air. A long stable plasma plume is realized at high applied voltage and high gas flow rate. Optical emission measurements show that the plasma plume consists of two part: a plume head with high energy electrons and a tail part with low energy electrons. The plasma plume propagates away from the quartz-tube outlet with about 30-80 km/sec along the helium gas flow channel. The propagation velocity of plasma plume is in the time scale of electron drift velocity, and the electric field plays an important role as a driving force of the plasma plume propagation.
我们在此展示了在开放空气中进行的氦气大气压介质阻挡放电射流实验。在高施加电压和高气体流速下实现了长稳定等离子体羽流。光学发射测量表明，等离子体羽流由两部分组成：一个具有高能电子的羽流头部和一个具有低能电子的尾部。等离子体羽流沿着氦气流通道以约30 - 80千米/秒的速度从石英管出口向外传播。等离子体羽流的传播速度处于电子漂移速度的时间尺度内，并且电场作为等离子体羽流传播的驱动力起着重要作用。
