标题： 氦氧$_2$射频微等离子体射流在大气压下等离子体动力学中的电负性效应 显示英文标题

标题： Electronegativity effects on plasma dynamics in He/O$_2$ RF microplasma jets at atmospheric pressure

摘要： 本工作通过比较氦气激发的相分辨光学发射光谱（PROES）测量结果与数值模拟，研究了在He/O$_2$混合物中运行的电容耦合射频微大气压等离子体射流（CCRF$\mu$APPJ）中欧姆模式和Penning-Gamma模式之间的转换。模拟采用了一种混合模型，该模型通过PIC/MCC动力学处理电子，而离子和中性粒子则通过流体动力学建模。这些结果显示，增加电负性会导致体电场的不均匀性，从而调制电子碰撞激发的动力学。实验结果与模拟之间有很好的一致性。 显示英文摘要

摘要： This work investigates the transitions between ohmic mode and Penning-Gamma mode in a capacitively coupled radio frequency micro atmospheric pressure plasma jets (CCRF $\mu$APPJ) operated in He/O$_2$ mixtures by comparing phase-resolved optical emission spectroscopy (PROES) measurements of helium excitation with numerical simulations. The simulations employ a hybrid model that treats electrons kinetically via PIC/MCC, while ions and neutrals are modeled fluid dynamically. These results reveal that increasing electronegativity causes inhomogeneities in the bulk electric field, consequently modulating electron impact excitation dynamics. A good agreement was found between experiments and simulations.