Comparison between off-resonance and electron Bernstein waves heating regime in a microwave discharge ion source
| Autor: | T. Serafino, G. Ciavola, R. Di Giugno, F. Di Bartolo, Nadia Gambino, R. Miracoli, Luigi Celona, Francesco Romano, David Mascali, Giuseppe Castro, D. Lanaia, Santo Gammino |
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| Rok vydání: | 2012 |
| Předmět: | |
| Zdroj: | Review of scientific instruments 83 (2012): 02B501-1–02B501-4. doi:10.1063/1.3662477 info:cnr-pdr/source/autori:G. Castro, D. Mascali, F.P. Romano, L. Celona, S. Gammino, D. Lanaia, R. Di Giugno, R. Miracoli, T. Serafino, F. Di Bartolo, N. Gambino, G. Ciavola/titolo:Comparison between off-resonance and electron Bernstein waves heating regime in a microwave discharge ion source/doi:10.1063%2F1.3662477/rivista:Review of scientific instruments/anno:2012/pagina_da:02B501-1/pagina_a:02B501-4/intervallo_pagine:02B501-1–02B501-4/volume:83 |
| ISSN: | 1089-7623 |
| DOI: | 10.1063/1.3662477 |
| Popis: | A microwave discharge ion source (MDIS) operating at the Laboratori Nazionali del Sud of INFN, Catania has been used to compare the traditional electron cyclotron resonance (ECR) heating with an innovative mechanisms of plasma ignition based on the electrostatic Bernstein waves (EBW). EBW are obtained via the inner plasma electromagnetic-to-electrostatic wave conversion and they are absorbed by the plasma at cyclotron resonance harmonics. The heating of plasma by means of EBW at particular frequencies enabled us to reach densities much larger than the cutoff ones. Evidences of EBW generation and absorption together with X-ray emissions due to high energy electrons will be shown. A characterization of the discharge heating process in MDISs as a generalization of the ECR heating mechanism by means of ray tracing will be shown in order to highlight the fundamental physical differences between ECR and EBW heating. |
| Databáze: | OpenAIRE |
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