Interchange, rotational, and ballooning stability of long-thin axisymmetric systems with finite-orbit effects

Cohen, B. I.; Freis, R.P.; Newcomb, William A.

doi:10.1063/1.865673

Cited by 29 publications

(37 citation statements)

References 39 publications

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“…4,5,8,9,11,12,14 The particle simulation has introduced no approximations in the basic laws of mechanics and electricity. So the FLR is expected to stabilize the interchange instability completely in the real magnetically confined plasma.…”

Section: Discussionmentioning

confidence: 99%

“…6,7 The FLR effects on an interchange instability are also important in an open system such as a tandem mirror. [8][9][10][11][12] The generalized Ohm's law and gyroviscosity in the extended MHD equation were derived theoretically. 5,13 Recently, it has been reported that the complete FLR stabilization of the interchange mode may not be attainable by the gyroviscosity or generalized Ohm's law alone in the frame work of extended MHD.…”

Section: Introductionmentioning

confidence: 99%

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Ion finite Larmor radius effects on the interchange instability in an open system

et al. 2013

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A particle simulation of an interchange instability was performed by taking into account the ion finite Larmor radius (FLR) effects. It is found that the interchange instability with large FLR grows in two phases, that is, linearly growing phase and the nonlinear phase subsequent to the linear phase, where the instability grows exponentially in both phases. The linear growth rates observed in the simulation agree well with the theoretical calculation. The effects of FLR are usually taken in the fluid simulation through the gyroviscosity, the effects of which are verified in the particle simulation with large FLR regime. The gyroviscous cancellation phenomenon observed in the particle simulation causes the drifts in the direction of ion diamagnetic drifts.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Ion finite Larmor radius effects on the interchange instability in an open system

et al. 2013

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“…and for the extra hot electrons in the end-cell core which are needed to stabilize the core, u> = (*/*_) (27) where ijj is the magnetic flux at the core plasma surface.…”

Section: Iii1 Hhd Equilibrium and Stabilitymentioning

confidence: 99%

Options for axisymmetric operation of MFTF-B

Fenstermacher¹,

Devoto²,

Thomassen³

1986

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“…1 was assessed by the FLORA MHD stability code 7 and with codes written using the Mathematica platform. The distance from the outer edge of the 0.42 m radius plasma to the flibe "wall" is taken to be 0.18 m and 0.75 m of flibe to the 30-mm thick steel wall followed by another 0.5 m of slowly flowing flibe.…”

Section: Configuration-equilibriamentioning

confidence: 99%

Axisymmetric Tandem Mirror Magnetic Fusion Energy Power Plant with Thick Liquid-Walls

Moir

Rognlien

2007

Fusion Science and Technology

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A fusion power plant is described that utilizes a new version of the tandem mirror device including spinning liquid walls. The magnetic configuration is evaluated with an axisymmetric equilibrium code predicting an average beta of 60%. The geometry allows a flowing molten salt, (flibe-Li 2 BeF 4 ), which protects the walls and structures from damage arising from neutrons and plasma particles. The free surface between the liquid and the burning plasma is heated by bremsstrahlung radiation, line radiation, and by neutrons. The temperature of the free surface of the liquid is calculated, and then the evaporation rate is estimated from vapor-pressure data. The allowed impurity concentration in the burning plasma is taken as 1% fluorine, which gives a 17% reduction in the fusion power owing to D/T fuel dilution, with F line-radiation causing minor power degradation. The end leakage power density of 0.6 MW/m 2 is readily handled by liquid jets. The tritium breeding is adequate with natural lithium. A number of problem areas are identified that need further study to make the design more selfconsistent and workable; however, the simple geometry and the use of liquid walls promise the cost of power competitive with that from fission and coal.

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Interchange, rotational, and ballooning stability of long-thin axisymmetric systems with finite-orbit effects

Cited by 29 publications

References 39 publications

Ion finite Larmor radius effects on the interchange instability in an open system

Ion finite Larmor radius effects on the interchange instability in an open system

Options for axisymmetric operation of MFTF-B

Axisymmetric Tandem Mirror Magnetic Fusion Energy Power Plant with Thick Liquid-Walls

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