Trace impurity transport in multi-species plasmas with large particle fluxes

Litvinova Mitra, E.; Kolmes, E. J.; Ochs, I. E.; Mlodik, M. E.; Rubin, T.; Fisch, N. J.

doi:10.1016/j.physleta.2021.127284

Trace impurity transport in multi-species plasmas with large particle fluxes

Journal Article · Wed Mar 10 00:00:00 EST 2021 · Physics Letters. A

DOI:https://doi.org/10.1016/j.physleta.2021.127284· OSTI ID:1817208

^[1]; ^[2]; Ochs, I. E. ^[2]; Mlodik, M. E. ^[2]; ^[2]; ^[2]

Hunter College, New York, NY (United States)
Princeton Univ., NJ (United States)

A burning fusion plasma has a large inwards flux of fuel and outwards flux of ash. Existing impurity transport theories do not account for a steady-state environment of such large fluxes. In this paper, we extend classical transport theory to account for a background of such fluxes. In a mainly two-ion species magnetized plasma, with oppositely directed density gradients maintained by oppositely directed sources of the two species, trace impurity ions are shown to align with the larger mass ions. This unexpected behavior is derived analytically and simulated numerically using the MITNS (Multiple-Ion Transport Numerical Solver) code. Overall, the result suggests a potential advantage of edge-fueled p-B11 fusion in extracting high-Z impurities, and possible applications in plasma-based separation methods.

View Accepted Manuscript (DOE)

Research Organization:: Hunter College, New York, NY (United States); Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)

Sponsoring Organization:: USDOE; USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: AC02-09CH11466; NA0003764

OSTI ID:: 1817208

Alternate ID(s):: OSTI ID: 1782289

Journal Information:: Physics Letters. A, Journal Name: Physics Letters. A Vol. 398; ISSN 0375-9601

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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70 PLASMA PHYSICS AND FUSION TECHNOLOGY
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Trace impurity transport in multi-species plasmas with large particle fluxes

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References (42)

Figures / Tables (8)

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