CAJ | 학술논문

为了在大气压下获得均匀、稳定且具有较大体积的氩气介质阻挡放电等离子体射流，提出了一种新的同轴型具有螺纹型内电极结构的等离子体发生器结构设计，在大气压开放环境下获得了均匀稳定的类辉光氩气介质阻挡放电等离子体射流。实验和初步的零维数值模拟结果表明：在所研究的工作参数范围内，放电随外加电压的增加可工作于初始放电阶段、过渡阶段、稳定放电和不稳定放电阶段；在稳定放电模式下，均匀弥散的类辉光放电可充满内径为8．9mm的玻璃管，发射光谱测量结果表明在等离子体射流区含有多种化学活性粒子；数值计算和实验测量所估算的等离子体射流长度基本一致（可为30mm以上），且等离子体射流发射光谱强度的轴向分布与其中亚稳态粒子的退激发过程相关。
위료재대기압하획득균균、은정차구유교대체적적아기개질조당방전등리자체사류，제출료일충신적동축형구유라문형내전겁결구적등리자체발생기결구설계，재대기압개방배경하획득료균균은정적류휘광아기개질조당방전등리자체사류。실험화초보적령유수치모의결과표명：재소연구적공작삼수범위내，방전수외가전압적증가가공작우초시방전계단、과도계단、은정방전화불은정방전계단；재은정방전모식하，균균미산적류휘광방전가충만내경위8．9mm적파리관，발사광보측량결과표명재등리자체사류구함유다충화학활성입자；수치계산화실험측량소고산적등리자체사류장도기본일치（가위30mm이상），차등리자체사류발사광보강도적축향분포여기중아은태입자적퇴격발과정상관。
Abstract： In order to produce uniform, steady and large volume dielectric barrier discharge （DBD） argon plasma jets at atmospheric pressure, a plasma generator with a screw-like inner electrode configuration was proposed. A uni- form, steady and visibly glow-like discharge plasma jet was obtained at an open environment using this newly-de- signed plasma generator. The experimental and preliminary zero- dimensional modeling results show that, the dis- charges can be operated at an initial, transitional, stable or unstable discharge modes with the increase of the applied voltage; the glow-like discharge can occupy the whole glass tube with an inner-diameter of 8.9 mm at a stable dis- charge mode; the optical emission spectrum shows that there are different kinds of chemically reactive species in the plasma jet region; the estimated length of the plasma jet （longer than 30 mml based on the modeling and experi- ments are consistent with each other qualitatively. The axial profile of the emission intensity of the plasma jet is re- lated with the de-excitation process of the metastables in the plasma jet region.