The influence of the secondary electron emission coefficient, γ, and the relative permittivity, ɛ _r, of the dielectric layers on the characteristics of dielectric-barrier discharges (DBDs) is studied by means of numerical modelling and calculated results are compared with experimental data. The analysis has been performed for a geometrically symmetric, plane-parallel DBD in argon with copper electrodes covered by quartz dielectrics. A time-dependent, spatially one-dimensional fluid model involving the drift-diffusion approximation is applied for the numerical analysis of the DBD operating sinusoidally at a frequency of 24kHz with applied voltages between 1.8 and 3.4kV and pressures from 100 to 650mbar. Main features of the model as well as the experimental setup and procedures are given. The modelling studies show especially the sensitivity of the results on the specific choice of γ and ɛ _r regarding the occurrence and intensity of discharge peaks, the appearance of one or more smaller peaks after the main peak, as well the establishment of a single periodic, multiperiodic or even chaotic temporal evolution of the DBD. In particular, generally good agreement between measured and calculated discharge current signals and the power dissipated in the discharge is found for γ = 0.02 and ɛ _r = 4.2.

二次电子发射系数的影响，γ，和相对介电常数，ɛ _ř通过数值模型研究了介电层对介电势垒放电（DBD）特性的影响，并将计算结果与实验数据进行了比较。分析是在氩气中进行几何对称，平面平行的DBD，且铜电极被石英电介质覆盖的。将涉及漂移-扩散近似的时变空间一维流体模型应用于以24kHz频率，在1.8至3.4kV的施加电压和100至650mbar的压力下以正弦波运行的DBD的数值分析。给出了模型的主要特征以及实验设置和程序。建模研究表明，特别是在具体选择的结果的灵敏度γ和ɛ _ř关于主峰之后发生和放电峰的强度，一个外观或更多个较小的峰，以及建立该DBD的单个周期性的，多期或甚至是混乱的时间演变的。特别地，测量和计算的放电电流信号，并在放电中消耗的功率之间通常良好协议发现γ = 0.02和ɛ _{- [R} = 4.2。