Ion energy and angular distributions onto polymer surfaces delivered by dielectric barrier discharge filaments in air: II. Particles
Ion energy and angular distributions onto polymer surfaces delivered by dielectric barrier discharge filaments in air: II. Particles
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DOI：
10.1088/0963-0252/20/3/035018
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发表时间：
2011
影响因子：
3.8
通讯作者：
N. Babaeva;M. Kushner
中科院分区：
文献类型：
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作者：
N. Babaeva;M. Kushner
与颗粒相交的大气压流在等离子体辅助燃烧的情况下是令人感兴趣的，其中颗粒可以是燃料气溶胶液滴，或者在空气的消毒中是令人感兴趣的，其中颗粒可以是细菌。离子能量和角分布（IEAD）入射到颗粒、小弯曲电介质表面上，然后部分地确定激活化学反应的倾向，或者在细菌的情况下，等离子体的灭菌能力。在本文中，我们讨论的结果，从计算研究的IEAD的小颗粒（45微米半径）产生的大气压放电。流光相交的粒子瞬间产生一个大的鞘电位作为流光通过的粒子电荷朝向等离子体浮动电位。在此期间，能量高达3-10 eV的离子可以撞击粒子。粒子的介电常数和流光极性部分地确定IEAD的特性。
Atmospheric pressure streamers intersecting particles are of interest in the context of plasma aided combustion, where the particle may be a fuel aerosol droplet, or in sterilization of air, where the particle may be a bacterium. The ion energy and angular distributions (IEADs) incident on the particles, small curved dielectric surfaces, then in part determine the propensity for activating chemical reactions or, in the case of bacteria, the plasma's sterilization capability. In this paper, we discuss results from a computational investigation of IEADs on small particles (45 µm radius) produced by atmospheric pressure discharge. Streamers intersecting a particle momentarily generate a large sheath potential as the streamer passes by as the particle charges towards the plasma floating potential. During that time, ions of energies up to 3–10 eV can strike the particle. The permittivity of the particle and the streamer polarity in part determine the character of the IEAD.