Issue |
EPL
Volume 125, Number 6, March 2019
|
|
---|---|---|
Article Number | 65002 | |
Number of page(s) | 6 | |
Section | Physics of Gases, Plasmas and Electric Discharges | |
DOI | https://doi.org/10.1209/0295-5075/125/65002 | |
Published online | 02 May 2019 |
Twisted Volkov states in a plasma
1 IPFN, Instituto Superior Técnico, Universidade de Lisboa - Av. Rovisco Pais 1, 1049-001 Lisboa, Portugal
2 Instituto de Física, Universidade Federal Fluminense - 24210-340 Niterói, RJ, Brazil
(a) titomend@tecnico.ulisboa.pt
(b) serbeto@if.uff.br
Received: 15 February 2019
Accepted: 21 March 2019
This work considers quantum electron states in the field of twisted waves in a plasma. We consider electromagnetic and electrostatic waves. They can be associated with intense laser pulses carrying orbital angular momentum, and to the resulting twisted wakefields. Klein-Gordon and Dirac equations are considered. We show that twisted Volkov states of electrons in electromagnetic and electrostatic waves in a plasma can be excited, and discuss their main properties. These results support the idea that acceleration of helical electron beams in plasmas is possible.
PACS: 52.38.Kd – Laser-plasma acceleration of electrons and ions / 41.75.Jv – Laser-driven acceleration / 03.65.Pm – Relativistic wave equations
© EPLA, 2019
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