中国物理B ›› 2024, Vol. 33 ›› Issue (1): 15201-15201.doi: 10.1088/1674-1056/ad0118
Electron characteristics and dynamics in sub-millimeter pulsed atmospheric dielectric barrier discharge
Junlin Fang(方骏林)1, Yarong Zhang(张亚容)1, Chenzi Lu(卢陈梓)1, Lili Gu(顾莉莉)1, Shaofeng Xu(徐少锋)1, Ying Guo(郭颖)1,†, and Jianjun Shi(石建军)2,‡
- 1 College of Science, Donghua University, Shanghai 201620, China;
2 Yiwu Research Institute of Fudan University, Yiwu 322099, China
Electron characteristics and dynamics in sub-millimeter pulsed atmospheric dielectric barrier discharge
Junlin Fang(方骏林)1, Yarong Zhang(张亚容)1, Chenzi Lu(卢陈梓)1, Lili Gu(顾莉莉)1, Shaofeng Xu(徐少锋)1, Ying Guo(郭颖)1,†, and Jianjun Shi(石建军)2,‡
- 1 College of Science, Donghua University, Shanghai 201620, China;
2 Yiwu Research Institute of Fudan University, Yiwu 322099, China
摘要： The discharge characteristics and mechanism of sub-millimeter pulsed dielectric barrier discharge in atmospheric-pressure helium are investigated experimentally and theoretically, demonstrating that when the discharge gap distance is reduced from 1.00 mm to 0.20 mm, the discharge ignition time is reduced to approximately 40 ns and discharge intensity is enhanced in terms of the discharge optical emission intensity and density of the plasma species, (energetic electrons with energy above 8.40 eV). The simulated results show that as the discharge gap distance is further reduced to 0.10 mm, the number of energetic electrons decreases, which is attributable to the contraction of plasma bulk regime and reduction of electron density in the discharge bulk. Conversely, the proportion of energetic electrons to the total electrons in the discharge monotonically increases as the discharge gap distance is reduced from 1.00 mm to 0.10 mm. It is proposed that a gap distance of 0.12 mm is optimal to achieve a high concentration and proportion of energetic electrons in sub-millimeter pulsed atmosphere dielectric barrier discharge.
中图分类号: (Elementary processes in plasmas)
- 52.20.-j