Plasma solenoid driven by a laser beam carrying an orbital angular momentum
Artikel i vetenskaplig tidskrift, 2018

A megagauss quasistatic axial magnetic field can be produced from the interaction of an intense laser beam carrying an orbital angular momentum with an underdense plasma. Three-dimensional 'particle in cell" simulations and analytical model demonstrate that orbital angular momentum is irreversibly transferred from a tightly focused radially polarized laser beam to electrons without any dissipative effect. A theoretical model describing the individual interaction of electrons with laser shows that particles gain angular momentum during their radial and longitudinal motion in the laser field. The electron rotation and the generated axial magnetic field survive to the end of the laser-plasma interaction and continue over a long time. The agreement between particle in cell simulations and the simplified model identifies routes to increase the intensity of the solenoidal magnetic field by controlling the laser beam characteristics, such as, for example, the orbital angular momentum and/or the pulse duration.

Författare

R. Nuter

Universite Bordeaux I

Ph Korneev

Russian Academy of Sciences

National Research Nuclear University

Illia Thiele

Chalmers, Fysik, Subatomär fysik och plasmafysik

V. Tikhonchuk

Czech Academy of Sciences

Universite Bordeaux I

Physical Review E

24700045 (ISSN) 24700053 (eISSN)

Vol. 98 3 033211

Ämneskategorier

Atom- och molekylfysik och optik

Annan fysik

Fusion, plasma och rymdfysik

DOI

10.1103/PhysRevE.98.033211

Mer information

Senast uppdaterat

2018-10-18