Generation of wakefields in a dielectric structure filled with plasma
- Autores: Knyazev R.1,2, Onishchenko I.1, Sotnikov G.1
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Afiliações:
- National Scientific Center Kharkiv Institute of Physics and Technology
- Karazin National University
- Edição: Volume 61, Nº 4 (2016)
- Páginas: 511-516
- Seção: Plasma
- URL: https://journals.rcsi.science/1063-7842/article/view/197036
- DOI: https://doi.org/10.1134/S1063784216040113
- ID: 197036
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Resumo
The effect of plasma on the amplitude of the wakefield excited in a dielectric structure by a relativistic electron bunch train is studied. The structure under study is a dielectric cylindrical waveguide with an axial drift channel filled with plasma. The dependences of the amplitude of a longitudinal electric field on the plasma density are obtained for the following three cases: the parameters of the dielectric structure and bunches are fixed; the inside or outside radius of the dielectric tube changes according a change in the plasma frequency, and the bunch repetition frequency is adjusted to the plasma frequency and the frequency of the first radial mode of a dielectric wave. It is shown that, when the eigenwave frequencies are adjusted to the bunch repetition frequency via a change in the structure radii, the maximum of the accelerating field is determined by a plasma wave, and there is a plasma density range where a dielectric wave significantly contributes to the total field amplitude. In the case of changing the outside radius, this range is substantially wider.
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Sobre autores
R. Knyazev
National Scientific Center Kharkiv Institute of Physics and Technology; Karazin National University
Email: sotnikov@kipt.kharkov.ua
Ucrânia, Akademicheskii pr. 1, Kharkiv, 61108; pl. Svobody 4, Kharkiv, 61022
I. Onishchenko
National Scientific Center Kharkiv Institute of Physics and Technology
Email: sotnikov@kipt.kharkov.ua
Ucrânia, Akademicheskii pr. 1, Kharkiv, 61108
G. Sotnikov
National Scientific Center Kharkiv Institute of Physics and Technology
Autor responsável pela correspondência
Email: sotnikov@kipt.kharkov.ua
Ucrânia, Akademicheskii pr. 1, Kharkiv, 61108