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Evolution of the modulated electron beam in supercritical plasma: simulation of initial-boundary problem
Evolution of the modulated electron beam moving through the supercritical plasma was studied in this work via computer simulation using PIC method. Results obtained correspond qualitatively to the experimental data. It was shown that concurrence between the resonant mode growing from the noise lev...
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| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Національний науковий центр «Харківський фізико-технічний інститут» НАН України
2006
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| Series: | Вопросы атомной науки и техники |
| Subjects: | |
| Online Access: | http://dspace.nbuv.gov.ua/handle/123456789/80437 |
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| Summary: | Evolution of the modulated electron beam moving through the supercritical plasma was studied in this work via
computer simulation using PIC method. Results obtained correspond qualitatively to the experimental data. It was
shown that concurrence between the resonant mode growing from the noise level and the non-resonant signal mode
leads to the suppression of the non-resonant mode In contrast to previous calculations it is shown that the resonance
instability occurs in the broad frequency band. Dependence of the peak amplitude of the signal on its’ initial value
was obtained. Frequency band expansion (for the resonant instability) can be explained by processes of l-s decay of
initial Langmuir wave. |
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