The dynamics of radio-frequency driven atmospheric pressure plasma jets
The dynamics of radio-frequency driven atmospheric pressure plasma jets
复制标题
射频驱动大气压等离子体射流的动力学
DOI：
10.1088/1742-6596/162/1/012013
复制
发表时间：
2009
影响因子：
4
通讯作者：
T. Gans
中科院分区：
文献类型：
--
作者：
L. Schaper;S. Reuter;J. Waskoenig;K. Niemi;V. D. Gathen;T. Gans
利用各种光学诊断技术和数值模拟技术研究了射频驱动的大气压等离子体射流的复杂动力学。用双光子吸收激光诱导荧光光谱(TALIF)测量了等离子体流出物中基态原子氧自由基的绝对数密度。空间分布分别与原子氧激发态和分子氧激发态的(真空)紫外线辐射进行了比较。用空间和相分辨光学发射光谱(PROES)观察到等离子体核中的激发和电离动力学是由电子碰撞控制的。电子动力学是通过电极前等离子体边界鞘的运动来控制的，如使用基于流体方程和电子动力学处理的混合程序进行的数值模拟所示。
The complex dynamics of radio-frequency driven atmospheric pressure plasma jets is investigated using various optical diagnostic techniques and numerical simulations. Absolute number densities of ground state atomic oxygen radicals in the plasma effluent are measured by two-photon absorption laser induced fluorescence spectroscopy (TALIF). Spatial profiles are compared with (vacuum) ultra-violet radiation from excited states of atomic oxygen and molecular oxygen, respectively. The excitation and ionization dynamics in the plasma core are dominated by electron impact and observed by space and phase resolved optical emission spectroscopy (PROES). The electron dynamics is governed through the motion of the plasma boundary sheaths in front of the electrodes as illustrated in numerical simulations using a hybrid code based on fluid equations and kinetic treatment of electrons.