Dynamics of two discrete vortices with different circulations composed of pure electron plasmas

Two-dimensional dynamics of two vortex strings with different circulations were experimentally observed. The strings were composed of pure electron plasmas and were confined in a Malmberg–Penning trap. When one of the two vortices trapped in a conventional potential well had weak circulation, the or...

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Main Authors: Soga Yukihiro, Mihara Yasuhiro, Park, Youngsoo
Format: Conference Proceeding
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ELECTRIC FIELDS
ELECTRODES
Electron plasma
ELECTRONS
ORBITS
PLASMA
POTENTIALS
Strings
TRAPPING
TRAPS
TWO-DIMENSIONAL CALCULATIONS
TWO-DIMENSIONAL SYSTEMS
VELOCITY
VORTEX THEORY
VORTICES
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creator Soga Yukihiro
Mihara Yasuhiro
Park, Youngsoo
description Two-dimensional dynamics of two vortex strings with different circulations were experimentally observed. The strings were composed of pure electron plasmas and were confined in a Malmberg–Penning trap. When one of the two vortices trapped in a conventional potential well had weak circulation, the orbits of the two vortices contradicted the point vortex theory. This disagreement stems from an unavoidable external electric field that exerts a different additional E × B drift velocity on each vortex. We resolved the discrepancy between observation and theory by applying a stepwise potential to the end electrodes, which produced a less non-ideal electric field.
doi_str_mv 10.1063/1.4923113
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source American Institute of Physics:Jisc Collections:Transitional Journals Agreement 2021-23 (Reading list)
subjects 70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ELECTRIC FIELDS
ELECTRODES
Electron plasma
ELECTRONS
ORBITS
PLASMA
POTENTIALS
Strings
TRAPPING
TRAPS
TWO-DIMENSIONAL CALCULATIONS
TWO-DIMENSIONAL SYSTEMS
VELOCITY
VORTEX THEORY
VORTICES
title Dynamics of two discrete vortices with different circulations composed of pure electron plasmas
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