Drift and separation in collisionality gradients

Ochs, I. E.; Rax, J. M.; Gueroult, R.; Fisch, N. J.

doi:10.1063/1.4994327

Title: Drift and separation in collisionality gradients

Journal Article · Thu Jul 20 00:00:00 EDT 2017 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4994327· OSTI ID:1395004

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Princeton Univ., NJ (United States). Dept. of Astronomical Sciences; Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
Univ. of Paris XI, Palaiseau (France). Dept. of Physics
Centre National de la Recherche Scientifique (CNRS), Toulous (France). Plasma Lab. and Energy Conversion

Here we identify a single-particle drift resulting from collisional interactions with a background species, in the presence of a collisionality gradient and background net flow. We also analyze this drift in different limits, showing how it reduces to the well known impurity pinch for high-Zi impurities. We find that in the low-temperature, singly ionized limit, the magnitude of the drift becomes mass-dependent and energy-dependent. Furthermore, by solving for the resulting diffusion-advection motion, we propose a mass-separation scheme that takes advantage of this drift, and analyze the separative capability as a function of collisionally dissipated energy.

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Research Organization:: Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC02-09CH11466

OSTI ID:: 1395004

Alternate ID(s):: OSTI ID: 1372125

Journal Information:: Physics of Plasmas, Vol. 24, Issue 8; ISSN 1070-664X

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 7 works

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Cited By (4)

Strategies for advantageous differential transport of ions in magnetic fusion devices Kolmes, E. J.; Ochs, I. E.; Fisch, N. J. Physics of Plasmas, Vol. 25, Issue 3 https://doi.org/10.1063/1.5023931	journal	March 2018
Plasma mass separation Zweben, S. J.; Gueroult, R.; Fisch, N. J. Physics of Plasmas, Vol. 25, Issue 9 https://doi.org/10.1063/1.5042845	journal	September 2018
E × B configurations for high-throughput plasma mass separation: An outlook on possibilities and challenges Gueroult, Renaud; Zweben, Stewart J.; Fisch, Nathaniel J. Physics of Plasmas, Vol. 26, Issue 4 https://doi.org/10.1063/1.5083229	journal	April 2019
Strategies for Advantageous Differential Transport of Ions in Magnetic Fusion Devices Kolmes, E. J.; Ochs, I. E.; Fisch, N. J. arXiv https://doi.org/10.48550/arxiv.1801.06591	text	January 2018

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