Formation of inverse electron distribution function and absolute negative conductivity in nonlocal plasma of a dc glow discharge
| Autor: | Jingfeng Yao, Zhongxiang Zhou, Evgeny Bogdanov, Anatoly Kudryavtsev, Chengxun Yuan |
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| Rok vydání: | 2019 |
| Předmět: |
Physics
education.field_of_study Glow discharge Argon Direct current Population chemistry.chemical_element Electron Plasma 01 natural sciences Electromagnetic radiation 010305 fluids & plasmas chemistry Physics::Plasma Physics Excited state 0103 physical sciences Atomic physics 010306 general physics education |
| Zdroj: | Physical review. E. 101(3-1) |
| ISSN: | 2470-0053 |
| Popis: | The inversion of the electron energy distribution function (EEDF) at low energies and the absolute negative electron conductivity are predicted and confirmed by numerical modeling of a direct current glow discharge in argon. It is shown that, in contrast to the local approximation used earlier for searching the inverse EEDF, in a real gas-discharge plasma, the formation of the EEDF is significantly affected by the terms with spatial gradients in the Boltzmann kinetic equation. In analogy with the inverse population of excited states in lasers, such a medium will amplify electromagnetic waves. |
| Databáze: | OpenAIRE |
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