Study of generation characteristics of glow-type atmospheric-pressure plasma jet based on DC discharge in air |
| |
Affiliation: | School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, People's Republic of China |
| |
Abstract: | In order to form an atmospheric-pressure plasma jet without airflow, a needle–ring electrode structure is proposed in this paper. When heteropolar potentials are applied to a needle and a ring, a marked electric field strength enhancement around the needle’s pointed end has been found. When the same potential is applied to both the needle and the ring, the lateral electric field strength for the needle can be weakened. By using the above two methods, an increase of the difference between the pointed end electric field strength and the lateral one is achieved and stable plasma jets are formed. A symmetrical space electric field distribution is established at the pointed end of the needles when several sets of heteropolar needle–ring electrodes are uniformly arranged, which is conducive to forming a uniform array plasma jet. Under DC discharge conditions, a safe and stable plasma jet of high density and an array plasma jet are successfully achieved. |
| |
Keywords: | DC discharge space electric field atmospheric-pressure air plasma jet array jet |
本文献已被 CNKI 万方数据 等数据库收录! |
| 点击此处可从《等离子体科学和技术》浏览原始摘要信息 |
|
点击此处可从《等离子体科学和技术》下载全文 |
|