Various concentric-ring patterns formed in a water-anode glow discharge operated at atmospheric pressure  

作　　者：Kaiyue WU Na ZHAO Qiming NIU Jiacun WU Shuai ZHOU Pengying JIA Xuechen LI 吴凯玥;赵娜;牛齐明;武珈存;周帅;贾鹏英;李雪辰(Institute of Life Science and Green Development,Hebei University,Baoding 071000,People’s Republic of China;School of Mathematics and Physics,Handan University,Handan 056005,People’s Republic of China;College of Physics Science and Technology,Hebei University,Baoding 071000,People’s Republic of China)

机构地区：[1]Institute of Life Science and Green Development,Hebei University,Baoding 071000,People’s Republic of China [2]School of Mathematics and Physics,Handan University,Handan 056005,People’s Republic of China [3]College of Physics Science and Technology,Hebei University,Baoding 071000,People’s Republic of China

出　　处：《Plasma Science and Technology》2022年第5期169-175,共7页等离子体科学和技术（英文版）

基　　金：financially supported by National Natural Science Foundation of China(Nos.11875121 and 51977057);Natural Science Interdisciplinary Research Program of Hebei University(Nos.DXK201908 and DXK202011);Natural Science Foundation of Hebei Province,China(Nos.A2020201025 and A2019201100);the financial support from Post-Graduate’s Innovation Fund Project of Hebei Province(Nos.CXZZBS2019023 and CXZZBS2019029);Post-Graduate’s Innovation Fund Project of Hebei University(Nos.HBU2021ss063 and HBU2021bs011)。

摘　　要：Pattern formation is a very interesting phenomenon formed above a water anode in atmospheric pressure glow discharge.Up to now,concentric-ring patterns only less than four rings have been observed in experiments.In this work,atmospheric pressure glow discharge above a water anode is conducted to produce diversified concentric-ring patterns.Results indicate that as time elapses,the number of concentric rings increases continuously and up to five rings have been found in the concentric-ring patterns.Moreover,the ring number increases continuously with increasing discharge current.The electrical conductivity of the anode plays an important role in the transition of the concentric patterns due to its positive relation with ionic strength.Hence,the electrical conductivity of the water anode is investigated as a function of time and discharge current.From optical emission spectrum,gas temperature and intensity ratio related with density and temperature of electron have been calculated.The various concentric-ring patterns mentioned above have been simulated at last with an autocatalytic reaction model.

关 键 词：atmospheric pressure glow discharge pattern formation water anode concentric-ring pattern autocatalytic reaction model 

分 类 号：O461.21[理学—电子物理学]