Smith-Purcell radiation from periodic beams; Optics Express; Vol. 25, iss. 21

Smith-Purcell radiation from periodic beams

Detalles Bibliográficos
Parent link:Optics Express
Vol. 25, iss. 21.— 2017.— [P. 26310-26328]
Autor Corporativo: Национальный исследовательский Томский политехнический университет (ТПУ) Физико-технический институт (ФТИ) Кафедра прикладной физики (№ 12) (ПФ)
Outros autores: Sergeeva D. Yu. Darjya Yurjevna, Potylitsyn A. P. Alexander Petrovich, Tishchenko A. A. Aleksey Aleksandrovich, Strikhanov M. N. Mikhail Nikolaevich
Summary:Title screen
Smith-Purcell effect is well known as a source of monochromatic electromagnetic radiation. In this paper we present the generalized theory of Smith-Purcell radiation from periodic beams. The form-factors describing both coherent and incoherent regimes of radiation are calculated. The radiation characteristics are investigated in two practically important frequency ranges, THz and X-ray, for two modulation profiles, most frequently used in practice – a train of microbunches and a Gaussian-shaped one, characterized by sinusoidal modulation with an arbitrary modulation depth. On the base of the theory developed we show that a modulated electron beam consisting of a set of bunches makes it possible to improve significantly the spectral line monochromaticity of the light emitted, reaching values better than 1% for short gratings. We demonstrate as well that Smith-Purcell radiation can be used for non-destructive diagnostics of the depth of modulation for partially modulated beams. These findings not only open up a new way to manipulate the light emission using Smith-Purcell effect but also promise a profound impact for other radiation sources based on charged particle beams, such as undulator radiation in FELs, next-generation X-ray radiation source based on inverse Compton scattering, in a wide range from THz to X-rays.
Режим доступа: по договору с организацией-держателем ресурса
Idioma:inglés
Publicado: 2017
Subjects:
электронный ресурс
труды учёных ТПУ
Acceso en liña:https://doi.org/10.1364/OE.25.026310
Formato: Electrónico Capítulo de libro
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=656605

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