Ion acceleration in multi-species cathodic plasma jet

A general expression for ion-ion coupling in a multi-species plasma jet was obtained. The expression is valid for any value of the inter-species velocity. This expression has enabled us to review a hydrodynamic problem of expanding the cathodic plasma microjet with two ion species within the respect...

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Veröffentlicht in:Physics of plasmas 2016-05, Vol.23 (5)
Hauptverfasser: Krasov, V. I., Paperny, V. L.
Format: Artikel
Sprache:eng
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Zusammenfassung:A general expression for ion-ion coupling in a multi-species plasma jet was obtained. The expression is valid for any value of the inter-species velocity. This expression has enabled us to review a hydrodynamic problem of expanding the cathodic plasma microjet with two ion species within the respective charge states Z1  = +1 and Z2  = +2 into a vacuum. We were able to illustrate that in scenario when the initial (i.e., acquired during a process of emission from cathode's surface) difference for ion's species velocity exceeds a threshold value, the difference remains noticeable (roughly about 10% of the average jet's velocity) at a distance of a few centimeters from the emission center. At this point, it can be measured experimentally.
ISSN:1070-664X
1089-7674
DOI:10.1063/1.4952775