Reference : Scattering of twisted relativistic electrons by atoms
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
http://hdl.handle.net/2268/201639
Scattering of twisted relativistic electrons by atoms
English
Serbo, Valery mailto []
Ivanov, Igor mailto [Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > Inter. fondamentales en physique et astrophysique (IFPA) >]
Fritzsche, Stephan []
Seipt, Daniel []
Surzhykov, Andrey []
20-Jul-2015
Physical Review A
American Physical Society
92
012705
Yes (verified by ORBi)
International
1050-2947
1094-1622
[en] The Mott scattering of high-energetic twisted electrons by atoms is investigated within the framework of the first Born approximation and Dirac's relativistic equation. Special emphasis is placed on the angular distribution and longitudinal polarization of the scattered electrons. In order to evaluate these angular and polarization properties we consider two experimental setups in which the twisted electron beam collides with either a single well-localized atom or macroscopic atomic target. Detailed relativistic calculations have been performed for both setups and for the electrons with kinetic energy from 10 to 1000 keV. The results of these calculations indicate that the emission pattern and polarization of outgoing electrons differ significantly from the scattering of plane-wave electrons and can be very sensitive to the parameters of the incident twisted beam. In particular, it is shown that the angular- and polarization-sensitive Mott measurements may reveal valuable information about both the transverse and longitudinal components of the linear momentum and the projection of the total angular momentum of twisted electron states. Thus, the Mott scattering emerges as a diagnostic tool for the relativistic vortex beams.
Researchers ; Professionals
http://hdl.handle.net/2268/201639
10.1103/PhysRevA.92.012705
http://journals.aps.org/pra/abstract/10.1103/PhysRevA.92.012705

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