Ring-averaged ion velocity distribution function probe for laboratory magnetized plasma experiment

Eiichirou Kawamori, Jinting Chen, Chiahsuan Lin, Zongmau Lee

研究成果: Article

摘要

Ring-averaged velocity distribution function of ions at a fixed guiding center position is a fundamental quantity in the gyrokinetic plasma physics. We have developed a diagnostic tool for the ring averaged velocity distribution function of ions for laboratory plasma experiments, which is named as the ring-averaged ion distribution function probe (RIDFP). The RIDFP is a set of ion collectors for different velocities. It is designed to be immersed in magnetized plasmas and achieves momentum selection of incoming ions by the selection of the ion Larmor radii. To nullify the influence of the sheath potential surrounding the RIDFP on the orbits of the incoming ions, the electrostatic potential of the RIDFP body is automatically adjusted to coincide with the space potential of the target plasma with the use of an emissive probe and a voltage follower. The developed RIDFP successfully measured the equilibrium ring-averaged velocity distribution function of a laboratory magnetized plasma, which was in accordance with the Maxwellian distribution having an ion temperature of 0.2 eV.

原文English
文章編號103507
期刊Review of Scientific Instruments
88
發行號10
DOIs
出版狀態Published - 2017 十月 1

指紋

Velocity distribution
Distribution functions
velocity distribution
distribution functions
ion distribution
Plasmas
probes
rings
Ions
ions
Experiments
Maxwell-Boltzmann density function
Larmor radius
plasma physics
ion temperature
sheaths
accumulators
electrostatics
orbits
momentum

All Science Journal Classification (ASJC) codes

  • Instrumentation

引用此文

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Ring-averaged ion velocity distribution function probe for laboratory magnetized plasma experiment. / Kawamori, Eiichirou; Chen, Jinting; Lin, Chiahsuan; Lee, Zongmau.

於: Review of Scientific Instruments, 卷 88, 編號 10, 103507, 01.10.2017.

研究成果: Article

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