Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Research › peer-review
Radiation of a charge intersecting the boundary between area with dielectric layer and vacuum area inside a cylindrical waveguide. / Grigoreva, A. A.; Galyamin, S. N.; Tyukhtin, A. V.; Vorobev, V. V.
2017 Progress in Electromagnetics Research Symposium - Spring, PIERS 2017. Electromagnetics Academy, 2017. p. 2356-2361.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Research › peer-review
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TY - GEN
T1 - Radiation of a charge intersecting the boundary between area with dielectric layer and vacuum area inside a cylindrical waveguide
AU - Grigoreva, A. A.
AU - Galyamin, S. N.
AU - Tyukhtin, A. V.
AU - Vorobev, V. V.
PY - 2017/5/22
Y1 - 2017/5/22
N2 - The work is devoted to the problem of electromagnetic field excitation by a point charge moving along the axis of a cylindrical waveguide. The waveguide consists of a vacuum part and a part having cylindrical dielectric layer. The charge flies from the partially dielectric part into the vacuum one. Investigation is carried out by division of the total field into the “forced field”, i.e., the field of the point charge in the infinite regular waveguide, and the “free field” which describes the influence of transverse boundary. The solution is constructed using the expansion of the free field into a series of waveguides modes in both parts of the structure. The infinite set of equations is obtained for the modes excitation coefficients. The analytical and numerical analysis of the total field is conducted. Special attention is devoted to the so-called “Cherenkov-transition radiation” (the effect of exit of Cherenkov radiation into the vacuum part of the waveguide). Distribution of radiation power on frequencies and waveguide modes is analysed. It is shown that the CTR can be both multi-frequency radiation and practically monochromatic one (depending on the problem parameters).
AB - The work is devoted to the problem of electromagnetic field excitation by a point charge moving along the axis of a cylindrical waveguide. The waveguide consists of a vacuum part and a part having cylindrical dielectric layer. The charge flies from the partially dielectric part into the vacuum one. Investigation is carried out by division of the total field into the “forced field”, i.e., the field of the point charge in the infinite regular waveguide, and the “free field” which describes the influence of transverse boundary. The solution is constructed using the expansion of the free field into a series of waveguides modes in both parts of the structure. The infinite set of equations is obtained for the modes excitation coefficients. The analytical and numerical analysis of the total field is conducted. Special attention is devoted to the so-called “Cherenkov-transition radiation” (the effect of exit of Cherenkov radiation into the vacuum part of the waveguide). Distribution of radiation power on frequencies and waveguide modes is analysed. It is shown that the CTR can be both multi-frequency radiation and practically monochromatic one (depending on the problem parameters).
UR - http://www.scopus.com/inward/record.url?scp=85044953007&partnerID=8YFLogxK
U2 - 10.1109/PIERS.2017.8262145
DO - 10.1109/PIERS.2017.8262145
M3 - Conference contribution
AN - SCOPUS:85044953007
SP - 2356
EP - 2361
BT - 2017 Progress in Electromagnetics Research Symposium - Spring, PIERS 2017
PB - Electromagnetics Academy
T2 - 2017 Progress In Electromagnetics Research Symposium - Spring, PIERS 2017
Y2 - 21 May 2017 through 24 May 2017
ER -
ID: 28459680