On features of the radiation from an electron moving along a helix inside a cylindrical hole in a homogeneous dielectric

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dc.creatorArzumanyan, S. R.
dc.creatorGrigoryan, L. Sh.
dc.creatorKhachatryan, H. F.
dc.creatorKotanjyan, A. S.
dc.creatorSaharian, A. A.
dc.date2007-11-29
dc.date.accessioned2026-07-07T11:54:26Z
dc.date.available2026-07-07T11:54:26Z
dc.descriptionThe radiation from a charge moving along a helical trajectory inside a cylindrical hole in homogeneous dielectric medium is investigated. Prompted by availability of materials with large dielectric permittivity $ε$ and small absorption, we discuss the features of this type of radiation for media with $ε\gg 1$. It is shown that there are high peaks in the angular distribution of radiation intensity at well-defined harmonics. The conditions are specified for the cavity-to-helix radii ratio, $ρ_{1}/ρ_{0}$, under which the angle-integrated radiation intensity on some harmonics exceeds that in the empty space. Though the amplification of radiation intensity increases with increasing $ε$, the corresponding "resonant" values of $ρ_{1}/ρ_{0}$ ratio are practically independent of the dielectric permittivity of surrounding medium. It is shown that an analogous amplification of radiation takes place essentially for the same values of $ρ_{1}/ρ_{0}$ also for the radiation in a cylindrical waveguide with conducting walls. An explanation of this phenomenon is given.
dc.description8 pages, 6 figures, talk presented at RREPS07, 24-28 September, 2007, Prague, Czech Republic
dc.identifierhttps://arxiv.org/abs/0711.4673
dc.identifierhttp://arxiv.org/abs/0711.4673
dc.identifierNucl.Instrum.Meth.B266:3703-3707,2008
dc.identifierdoi:10.1016/j.nimb.2008.02.002
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/204901
dc.subjectHigh Energy Physics - Theory
dc.subjectClassical Physics
dc.titleOn features of the radiation from an electron moving along a helix inside a cylindrical hole in a homogeneous dielectric
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