Large-scale electron vortex structure formation in a plasma lens

Chekh, Yu. N.; Goncharov, A. A.; Protsenko, I. M.
January 2006
Technical Physics Letters;Jan2006, Vol. 32 Issue 1, p51
Academic Journal
The first experimental data on the observation of electron vortices in an electrostatic plasma lens at a considerable radial gradient of electron density are reported. It is established that anharmonic potential waves of large amplitude appear and propagate in the azimuthal direction. The results of measurements of the electric field distribution show that electron bunches formed as a result of instability development contain trapped particles, which rotate at a large velocity around the centers of bunches, thus creating vortices. The main factor leading to limitation of the maximum amplitude of vortices in a strong magnetic field has been experimentally established.


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