Neutral particle energy analysis and charge exchange power loss in edge-dominated spheromaks

Journal Article · Thu Aug 01 04:00:00 EDT 1991 · Physics of Fluids B; (USA)

DOI:https://doi.org/10.1063/1.859989· OSTI ID:5519353

Mayo, R M; Kirschenbaum, L S ^[1]

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1. Los Alamos National Laboratory, Los Alamos, New Mexico 87544 (US)

Neutral particle density profiles have previously been calculated for spheromak plasmas (Phys. Fluids B {bold 2} (1990) 115). Here, the formalism is extended to calculate the one-dimensional (1-D) profile of the egressing neutral energy flux to correctly treat profile and attenuation effects. If is found that the energy flux profile is strongly dependent on {ital T}{sub {ital i}},{ital T}{sub {ital e}},{ital n}{sub {ital e}} profiles and magnitudes, and regions of the plasma have been identified as localized hot spots'' for charge-exchange power loss in some cases. In addition, the total charge exchange power loss is found to be in order-of-magnitude agreement with predictions from a zero-dimensional (0-D) model and can account for the bulk of the edge-dominated spheromak power loss.

• OSTI ID: 5519353
• Journal Information: Physics of Fluids B; (USA), Journal Name: Physics of Fluids B; (USA) Vol. 3:8; ISSN 0899-8221; ISSN PFBPE
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700101* -- Fusion Energy-- Plasma Research-- Confinement
Heating
& Production
700103 -- Fusion Energy-- Plasma Research-- Kinetics
ATTENUATION
CHARGE EXCHANGE
CLOSED PLASMA DEVICES
END EFFECTS
ENERGY LOSSES
LOSSES
PLASMA
SPHEROMAK DEVICES
THERMONUCLEAR DEVICES
TOKAMAK DEVICES