Reference : Quantum calculation of the Vavilov-Cherenkov radiation by twisted electrons
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
http://hdl.handle.net/2268/201645
Quantum calculation of the Vavilov-Cherenkov radiation by twisted electrons
English
Ivanov, Igor mailto [Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > Inter. fondamentales en physique et astrophysique (IFPA) >]
Serbo, Valery []
Zaytsev, Vladimir []
19-May-2016
Physical Review A
American Physical Society
93
053825
Yes (verified by ORBi)
International
1050-2947
1094-1622
[en] We present a detailed quantum electrodynamical description of Vavilov-Cherenkov radiation emitted by a relativistic twisted electron in the transparent medium. Simple expressions for the spectral and spectral-angular distributions as well as for the polarization properties of the emitted radiation are obtained. Unlike the plane-wave case, the twisted electron produces radiation within the annular angular region, with enhancement towards its boundaries. Additionally, the emitted photons can have linear polarization not only in the scattering plane but also in the orthogonal direction. We find that the Vavilov-Cherenkov radiation emitted by an electron in a superposition of two vortex states exhibits a strong azimuthal asymmetry. Thus, the Vavilov-Cherenkov radiation offers itself as a convenient diagnostic tool of such electrons and complements the traditional microscopic imaging.
Researchers ; Professionals
http://hdl.handle.net/2268/201645
10.1103/PhysRevA.93.053825
https://arxiv.org/abs/1602.05099

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