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Title: Inductive Sustainment of Oblate FRCs with the Assistance of Magnetic Diffusion, Shaping and Finite-Lamor Radius Stabilization

Abstract

Oblate field-reversed configurations FRCs have been sustained for >300 µs, or >15 magnetic diffusion times, through the use of an inductive solenoid. These argon FRCs can have their poloidal flux sustained or increased, depending on the timing and strength of the induction. An inward pinch is observed during sustainment, leading to a peaking of the pressure profile and maintenance of the FRC equilibrium. The good stability observed in argon (and krypton) does not transfer to lighter gases, which develop terminal co-interchange instabilities. The stability in argon and krypton is attributed to a combination of external field shaping, magnetic diffusion, and finite-Larmor radius effects.

Authors:
; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
953702
Report Number(s):
PPPL-4337
TRN: US1000191
DOE Contract Number:  
DE-ACO2-76CHO-3073
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ARGON; DIFFUSION; FIELD-REVERSED THETA PINCH DEVICES; GASES; INDUCTION; KRYPTON; MAINTENANCE; STABILITY; STABILIZATION

Citation Formats

Gerhardt, S., Belova, E. V., Yamada, M., Ji, H., Inomoto, M., Jacobson, C. M., Maqueda, R., McGeehan, B., and Y., Ren. Inductive Sustainment of Oblate FRCs with the Assistance of Magnetic Diffusion, Shaping and Finite-Lamor Radius Stabilization. United States: N. p., 2008. Web. doi:10.2172/953702.
Gerhardt, S., Belova, E. V., Yamada, M., Ji, H., Inomoto, M., Jacobson, C. M., Maqueda, R., McGeehan, B., & Y., Ren. Inductive Sustainment of Oblate FRCs with the Assistance of Magnetic Diffusion, Shaping and Finite-Lamor Radius Stabilization. United States. doi:10.2172/953702.
Gerhardt, S., Belova, E. V., Yamada, M., Ji, H., Inomoto, M., Jacobson, C. M., Maqueda, R., McGeehan, B., and Y., Ren. Thu . "Inductive Sustainment of Oblate FRCs with the Assistance of Magnetic Diffusion, Shaping and Finite-Lamor Radius Stabilization". United States. doi:10.2172/953702. https://www.osti.gov/servlets/purl/953702.
@article{osti_953702,
title = {Inductive Sustainment of Oblate FRCs with the Assistance of Magnetic Diffusion, Shaping and Finite-Lamor Radius Stabilization},
author = {Gerhardt, S. and Belova, E. V. and Yamada, M. and Ji, H. and Inomoto, M. and Jacobson, C. M. and Maqueda, R. and McGeehan, B. and Y., Ren},
abstractNote = {Oblate field-reversed configurations FRCs have been sustained for >300 µs, or >15 magnetic diffusion times, through the use of an inductive solenoid. These argon FRCs can have their poloidal flux sustained or increased, depending on the timing and strength of the induction. An inward pinch is observed during sustainment, leading to a peaking of the pressure profile and maintenance of the FRC equilibrium. The good stability observed in argon (and krypton) does not transfer to lighter gases, which develop terminal co-interchange instabilities. The stability in argon and krypton is attributed to a combination of external field shaping, magnetic diffusion, and finite-Larmor radius effects.},
doi = {10.2172/953702},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2008},
month = {7}
}