Electrodynamics of helical slowing structure with high-current electron beam

• Published in: Вопросы атомной науки и техники
• Date: 1999
• ISSN: 1562-6016
• Main Authors: Buts, V.A., Tolstoluzhsky, A.P.
• Format: Article
• Language: English
• Published: Національний науковий центр «Харківський фізико-технічний інститут» НАН України 1999
• Online Access: https://nasplib.isofts.kiev.ua/handle/123456789/81503
• Journal Title: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Cite this: Electrodynamics of helical slowing structure with high-current electron beam / V.A. Buts, A.P. Tolstoluzhsky // Вопросы атомной науки и техники. — 1999. — № 4. — С. 88-90. — Бібліогр.: 4 назв. — англ.

In most theoretical and experimental research, devoted to studying the interactions of beams with hybrid structures, the beam density is assumed small, therefore it does not change a structure of eigenwaves of electrodynamic system the beam interacts with. It is interesting to consider another limiting case, when the beam density is already so large, that natural oscillations of beam partiсles ( wb ) are more than frequency of electromagnetic waves exited by beam, and when the presence of beam significantly changes the slowing structure electrodynamics. Thus, we have carried out analytical
 investigation and numerical analysis for dispersion chracteristics and have found increments of instability of nonequilibrium system – annular electron beam in
 helical slowing structure for a beam of large density,
 when the frequency of beam natural oscillations is more
 than frequency of oscillations excited by him.