Ravil Usmanov, Anton Melnikov, Vladimir Polistchook, Andrey Gavrikov, Nikolay Antonov, Valentin Smirnov
{"title":"混合阴极发射率对加热阴极真空电弧中等离子体流动的影响","authors":"Ravil Usmanov, Anton Melnikov, Vladimir Polistchook, Andrey Gavrikov, Nikolay Antonov, Valentin Smirnov","doi":"10.1007/s11090-024-10522-3","DOIUrl":null,"url":null,"abstract":"<div><p>Vacuum arc is one of the most widespread sources of multicomponent ion/plasma flows. In the paper, we examine how the emissive properties of mixed cathode components affect the parameters of generated plasma. The scheme of vacuum arc with a heated cathode made of CeO<sub>2</sub> + Cr and TiO<sub>2</sub> + Cr powders was used. The arc discharges in the current range of 30–90 A and in the cathode temperature range of 1.8–2.0 kK were studied. It was found that CeO<sub>2</sub> provides an intensive thermal electron emission and the arc with CeO<sub>2</sub> + Cr cathode has a diffuse current attachment, plasma parameters are controllable and mainly Cr ions appear in plasma. Conversely, the current constricts in the arc with a non-emissive TiO<sub>2</sub> + Cr cathode, the plasma parameters are unchangeable and Ti and Cr ions are generated in comparable amounts. The results presented may be useful in multicomponent plasma sources design.</p></div>","PeriodicalId":734,"journal":{"name":"Plasma Chemistry and Plasma Processing","volume":"45 1","pages":"21 - 32"},"PeriodicalIF":2.6000,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Influence of Mixed Cathode Emissivity on Generated Plasma Flow in Vacuum Arc with Heated Cathode\",\"authors\":\"Ravil Usmanov, Anton Melnikov, Vladimir Polistchook, Andrey Gavrikov, Nikolay Antonov, Valentin Smirnov\",\"doi\":\"10.1007/s11090-024-10522-3\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Vacuum arc is one of the most widespread sources of multicomponent ion/plasma flows. In the paper, we examine how the emissive properties of mixed cathode components affect the parameters of generated plasma. The scheme of vacuum arc with a heated cathode made of CeO<sub>2</sub> + Cr and TiO<sub>2</sub> + Cr powders was used. The arc discharges in the current range of 30–90 A and in the cathode temperature range of 1.8–2.0 kK were studied. It was found that CeO<sub>2</sub> provides an intensive thermal electron emission and the arc with CeO<sub>2</sub> + Cr cathode has a diffuse current attachment, plasma parameters are controllable and mainly Cr ions appear in plasma. Conversely, the current constricts in the arc with a non-emissive TiO<sub>2</sub> + Cr cathode, the plasma parameters are unchangeable and Ti and Cr ions are generated in comparable amounts. The results presented may be useful in multicomponent plasma sources design.</p></div>\",\"PeriodicalId\":734,\"journal\":{\"name\":\"Plasma Chemistry and Plasma Processing\",\"volume\":\"45 1\",\"pages\":\"21 - 32\"},\"PeriodicalIF\":2.6000,\"publicationDate\":\"2024-10-09\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Plasma Chemistry and Plasma Processing\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s11090-024-10522-3\",\"RegionNum\":3,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"ENGINEERING, CHEMICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Plasma Chemistry and Plasma Processing","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s11090-024-10522-3","RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
Influence of Mixed Cathode Emissivity on Generated Plasma Flow in Vacuum Arc with Heated Cathode
Vacuum arc is one of the most widespread sources of multicomponent ion/plasma flows. In the paper, we examine how the emissive properties of mixed cathode components affect the parameters of generated plasma. The scheme of vacuum arc with a heated cathode made of CeO2 + Cr and TiO2 + Cr powders was used. The arc discharges in the current range of 30–90 A and in the cathode temperature range of 1.8–2.0 kK were studied. It was found that CeO2 provides an intensive thermal electron emission and the arc with CeO2 + Cr cathode has a diffuse current attachment, plasma parameters are controllable and mainly Cr ions appear in plasma. Conversely, the current constricts in the arc with a non-emissive TiO2 + Cr cathode, the plasma parameters are unchangeable and Ti and Cr ions are generated in comparable amounts. The results presented may be useful in multicomponent plasma sources design.
期刊介绍：
Publishing original papers on fundamental and applied research in plasma chemistry and plasma processing, the scope of this journal includes processing plasmas ranging from non-thermal plasmas to thermal plasmas, and fundamental plasma studies as well as studies of specific plasma applications. Such applications include but are not limited to plasma catalysis, environmental processing including treatment of liquids and gases, biological applications of plasmas including plasma medicine and agriculture, surface modification and deposition, powder and nanostructure synthesis, energy applications including plasma combustion and reforming, resource recovery, coupling of plasmas and electrochemistry, and plasma etching. Studies of chemical kinetics in plasmas, and the interactions of plasmas with surfaces are also solicited. It is essential that submissions include substantial consideration of the role of the plasma, for example, the relevant plasma chemistry, plasma physics or plasma–surface interactions; manuscripts that consider solely the properties of materials or substances processed using a plasma are not within the journal’s scope.
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