1-D Modeling of the Screw-Pinch Plasma in PROTO-SPHERA

Paolo Buratti; Brunello Tirozzi; Franco Alladio; Paolo Micozzi

doi:10.3390/fluids4010042

Fluids (Mar 2019)

1-D Modeling of the Screw-Pinch Plasma in PROTO-SPHERA

Paolo Buratti,
Brunello Tirozzi,
Franco Alladio,
Paolo Micozzi

Affiliations

Paolo Buratti: ENEA, Fusion and Nuclear Safety Department, C. R. Frascati, Via E. Fermi 45, 00044 Frascati (Roma), Italy
Brunello Tirozzi: ENEA, Fusion and Nuclear Safety Department, C. R. Frascati, Via E. Fermi 45, 00044 Frascati (Roma), Italy
Franco Alladio: ENEA, Fusion and Nuclear Safety Department, C. R. Frascati, Via E. Fermi 45, 00044 Frascati (Roma), Italy
Paolo Micozzi: ENEA, Fusion and Nuclear Safety Department, C. R. Frascati, Via E. Fermi 45, 00044 Frascati (Roma), Italy

DOI: https://doi.org/10.3390/fluids4010042
Journal volume & issue: Vol. 4, no. 1
p. 42

Abstract

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A simple steady-state model for a 3-species mixture (ions, electrons, and neutrals) in a screw-pinch plasma configuration is developed. The model is applied to the central plasma column of the PROTO-SPHERA experiment. Degree of ionization, azimuthal current density, and azimuthal ion velocity are calculated. Full ionization is found at plasma temperatures above 1.5 eV, with neutrals confined in an outer shell where radial plasma flow develops and drives both azimuthal current and azimuthal flow.

Published in Fluids

ISSN: 2311-5521 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Science: Physics: Heat: Thermodynamics; Science: Physics: Descriptive and experimental mechanics
Website: http://www.mdpi.com/journal/fluids

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