Numerical validation of axial plasma momentum lost to a lateral wall induced by neutral depletion

Yoshinori Takao, Kazunori Takahashi

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14 Citations (Scopus)

Abstract

Momentum imparted to a lateral wall of a compact inductively coupled plasma thruster is numerically investigated for argon and xenon gases by a particle-in-cell simulation with Monte Carlo collisions (PIC-MCC). Axial plasma momentum lost to a lateral wall is clearly shown when axial depletion of the neutrals is enhanced, which is in qualitative agreement with the result in a recent experiment using a helicon plasma source [Takahashi et al., Phys. Rev. Lett. 114, 195001 (2015)]. The PIC-MCC calculations demonstrate that the neutral depletion causes an axially asymmetric profile of the plasma density and potential, leading to axial ion acceleration and the non-negligible net axial force exerted to the lateral wall in the opposite direction of the thrust.

Original languageEnglish
Article number113509
JournalPhysics of Plasmas
Volume22
Issue number11
DOIs
Publication statusPublished - 2015 Nov 1

ASJC Scopus subject areas

  • Condensed Matter Physics

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