{"title":"Specific Features of Electron Runaway in a Gas Gap with a Conical Cathode","authors":"N. M. Zubarev, O. V. Zubareva, M. I. Yalandin","doi":"10.1134/S1028335823090070","DOIUrl":null,"url":null,"abstract":"<p>The conditions and dynamics of electron runaway in a gas gap with an inhomogeneous electric field distribution due to the use of a conic cathode are analyzed. Significant distinctions in the behavior of electrons at cone opening angles larger and smaller than the threshold value of 98.6° are revealed. For a weakly inhomogeneous field distribution (cones with angles above the threshold), electrons are continuously accelerated throughout the entire gap. In a strongly inhomogeneous field (cones with comparatively small opening angles), electrons may gain a maximum energy within the gap and start to decelerate in the near-anode area. However, they reach the anode with high energies comparable to the electric field work. Such a difference necessitates the use of different criteria for the runaway of free electrons in the gas gap.</p>","PeriodicalId":533,"journal":{"name":"Doklady Physics","volume":"68 9","pages":"279 - 283"},"PeriodicalIF":0.6000,"publicationDate":"2024-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Doklady Physics","FirstCategoryId":"101","ListUrlMain":"https://link.springer.com/article/10.1134/S1028335823090070","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MECHANICS","Score":null,"Total":0}
引用次数: 0
Abstract
The conditions and dynamics of electron runaway in a gas gap with an inhomogeneous electric field distribution due to the use of a conic cathode are analyzed. Significant distinctions in the behavior of electrons at cone opening angles larger and smaller than the threshold value of 98.6° are revealed. For a weakly inhomogeneous field distribution (cones with angles above the threshold), electrons are continuously accelerated throughout the entire gap. In a strongly inhomogeneous field (cones with comparatively small opening angles), electrons may gain a maximum energy within the gap and start to decelerate in the near-anode area. However, they reach the anode with high energies comparable to the electric field work. Such a difference necessitates the use of different criteria for the runaway of free electrons in the gas gap.
期刊介绍：
Doklady Physics is a journal that publishes new research in physics of great significance. Initially the journal was a forum of the Russian Academy of Science and published only best contributions from Russia in the form of short articles. Now the journal welcomes submissions from any country in the English or Russian language. Every manuscript must be recommended by Russian or foreign members of the Russian Academy of Sciences.
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