The effective ionization of air and oxygen in a near-critical electric field at high pressures
The effective ionization of air and oxygen in a near-critical electric field at high pressures
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DOI：
10.1007/s11826-008-1001-7
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发表时间：
2008-02-01
影响因子：
1.4
通讯作者：
Lomteva, A. Yu.
中科院分区：
文献类型：
--
作者：
Aleksandrov, A. F.;Bychkov, V. L.;Lomteva, A. Yu.
分析了中高压放电发展初期空气和氧气的有效电离。考虑了背景电子参与的应用场电离、电子与氧原子和分子的粘着和分离以及负离子的充电和转化。考虑了离子-分子过程对外场的依赖性。在恒定场和微波场中，有效电离值是不同的。在微波场中得到的有效空气电离值与实验数据吻合较好。结果表明，背景电子决定了有效电离的可能性，而转换过程决定了阈值E/N的存在，其中E为电场强度，N为中性粒子的密度。
The effective ionization of air and oxygen at early stages of electric discharge development at medium and high pressures is analyzed. Ionization in an applied field with the participation of background electrons, electron sticking to and detachment from oxygen atoms and molecules, and recharging and conversion of negative ions is considered. The dependence of ion-molecular processes on external field is taken into account. The effective ionization value is shown to be different in constant and microwave fields. The effective air ionization values obtained in a microwave field are in agreement with the experimental data. It is shown that background electrons determine the possibility of effective ionization, whereas conversion processes determine the existence of a threshold E/N value, where E is the electric field strength and N is the density of neutral particles.