Application of Ion Sensitive Probe to High Density Plasmas in Magnum-PSI

Application of Ion Sensitive Probe to High Density Plasmas in Magnum-PSI

Feasibility of an ion sensitive probe was evaluated in high electron density (> 5 × 1019 m−3) helium plasmas produced in the Magnum-PSI device. The ion sensitive probe showed that the ion temperature was ∼ 1 eV and almost equal to the electron temperature. Increasing the neutral pressure to effic...

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Veröffentlicht in:Plasma and Fusion Research 2019/07/24, Vol.14, pp.1202135-1202135
Hauptverfasser: HAYASHI, Yuki, OHNO, Noriyasu, MEIDEN, Hennie van der, SCHOLTEN, John, KAJITA, Shin, BERG, Jonathan van den, PERILLO, Renato, VERNIMMEN, Jordy, MORGAN, Thomas
Format: Artikel
Sprache:eng
Schlagworte:
I-V characteristic
ion sensitive probe
ion temperature
Magnum-PSI
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Zusammenfassung:Feasibility of an ion sensitive probe was evaluated in high electron density (> 5 × 1019 m−3) helium plasmas produced in the Magnum-PSI device. The ion sensitive probe showed that the ion temperature was ∼ 1 eV and almost equal to the electron temperature. Increasing the neutral pressure to efficiently lead to the electron-ion recombination processes, the electron currents were collected at the ion collector. A secondary electron emission in the guard electrode might have an effect on the ion current.
ISSN:1880-6821
1880-6821
DOI:10.1585/pfr.14.1202135