Scaling of rotation and isotope separation in a vacuum-arc centrifuge

Prasad, R.R.; Krishnan, M.

doi:10.1016/0168-583x(87)90734-8

Cited by 13 publications

(3 citation statements)

References 7 publications

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“…The interaction of the radial component of current with the externally supplied axial magnetic field sets the plasma into rotation at frequencies typically between 3ϫ10 4 and 4 ϫ10 5 rad/s. [5][6][7] Except for some recent experiments where an initial gas filling was utilized, 8 the chamber is evacuated before the discharge and the plasma in the VAC consists of multiply charged metal ions and electrons, with almost no neutral particles. 3 The rotating plasma streams through the anode grid and is deposited on the far end plate.…”

Section: Introductionmentioning

confidence: 99%

Performance of a vacuum arc centrifuge with a nonuniform magnetic field

Hole

Simpson

1997

Physics of Plasmas

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The effect of a variable magnetic field on behavior in the rotation region of a vacuum arc centrifuge is analyzed using a first order perturbation of the fluid equations describing the plasma. It is found that the plasma contracts and rotates more rapidly as it moves into an increasing magnetic field. Under conditions typical of current devices, the separative performance is predicted to improve significantly.

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Section: Introductionmentioning

confidence: 99%

Performance of a vacuum arc centrifuge with a nonuniform magnetic field

Hole

Simpson

1997

Physics of Plasmas

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“…with φ the electric potential 50 . Since separation in plasma centrifuges is directly related to the rotation velocity 51 , the ability to control the electric field and, as a result, the rotation profile, is highly desirable. The need for electric field and rotation profile control in magnetized plasma has grown even stronger in the last decade as the emergence of new separation needs 25 led to the development of new filter concepts.…”

Section: A Crossed-field In Magnetized Ion Regimementioning

confidence: 99%

ExB flows for high-throughput plasma mass separation

Gueroult¹,

Zweben²,

Fisch³

et al. 2018

Preprint

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High-throughput plasma separation based on atomic mass holds the promise for offering unique solutions to a variety of high-impact societal applications. Through the mass differential effects they exhibit, crossed-field configurations can in principle be exploited in various ways to separate ions based on atomic mass. Yet, the practicality of these concepts is conditioned upon the ability to drive suitable crossed-field flows for plasma parameters compatible with high-throughput operation. Limited current predictive capabilities have not yet made it possible to confirm this possibility. Yet, past experimental results suggest that end-electrodes biasing may be effective, at least for certain electric field values. A better understanding of cross-field conductivity is needed to confirm these results and confirm the potential of crossed-field configurations for high-throughput separation.

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“…The VAC is usually a pulsed device, with drive currents of about 1 kA lasting for several milliseconds. It is the interaction of the radial current and the axial magnetic field that sets the plasma into rotation, typically at frequencies between 30 and 400 krad s −1 [5][6][7]. The configuration of the anode mesh determines the radial field profile at that location, and has a large effect on the behaviour of the plasma downstream in the rotation region [7].…”

Section: Introductionmentioning

confidence: 99%

Analytical description of a collisional plasma column in a vacuum arc centrifuge

Hole¹,

Simpson²

2001

J. Phys. D: Appl. Phys.

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In this work the effects of electron-ion collisions in the plasma column of a vacuum arc centrifuge are modelled using a perturbation technique. It is found that the model agrees reasonably with an earlier fluid simulation, in which ion viscosity effects were also included. Using the perturbed solutions, the axial evolution of the steady-state separation profile is resolved, showing that the effect of electron-ion collisions is to improve separative performance with increasing axial position. The conditions under which separative performance are optimized are suggested. The non-uniformity in the axial magnetic field of a vacuum arc centrifuge caused by plasma rotation is also investigated. It is found that the non-uniformity is weak for standard operating conditions.

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Scaling of rotation and isotope separation in a vacuum-arc centrifuge

Cited by 13 publications

References 7 publications

Performance of a vacuum arc centrifuge with a nonuniform magnetic field

Performance of a vacuum arc centrifuge with a nonuniform magnetic field

ExB flows for high-throughput plasma mass separation

Analytical description of a collisional plasma column in a vacuum arc centrifuge

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