Advances and problems in plasma-optical mass-separation

Bardakov, V. M.; Ivanov, S. D.; Strokin, N. A.

doi:10.1063/1.4846898

Cited by 30 publications

(15 citation statements)

References 8 publications

(10 reference statements)

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“…One example is the separation region of the Plasma Optical Mass Separator with Electrostatic focusing (POMS-E) originally proposed by Morozov and Savel'ev 68 and further studied and developed by Bardakov and co-workers at Irkutsk State Technical University 69,70 . In this concept, an annular plasma beam first passes through a region with strong radial magnetic field known as the "azimuthator ".…”

Section: B Crossed-field In Non-magnetized Ion Regimementioning

confidence: 99%

“…FIG.2. Sketch of the separation process in (a) the POMS-E68,70 and (b) Smironov's azimuthal crossed-field filter71 . While ions are non-magnetized in both devices, ions are affected by the magnetic field in Smirnov's filter while they are not in the POMS-E. POMS-E takes advantage of the balance between centrifugal forces associated with an initial azimuthal velocity (vϕ H < vϕ L ) produced upstream in the azimuthator (not shown here) and a confining radial electric field (Er < 0).…”

mentioning

confidence: 99%

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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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Section: B Crossed-field In Non-magnetized Ion Regimementioning

confidence: 99%

mentioning

confidence: 99%

ExB flows for high-throughput plasma mass separation

Gueroult¹,

Zweben²,

Fisch³

et al. 2018

Preprint

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show abstract

“…This concept was performed in experimental studies [ 31 ] and in studies [ 32 , 33 ]. The other types are plasma–optical mass separators [ 34 , 35 ], in which separated particle beams with an initial rotation are injected into the radial electric field. The ratio between centrifugal and electrical forces determines the central mass.…”

Section: Introductionmentioning

confidence: 99%

The Optimal Axis-Symmetrical Plasma Potential Distribution for Plasma Mass Separation

et al. 2022

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The mass separation of chemical element mixtures is a relevant task for numerous applications in the nuclear power industry. One of the promising approaches to solve this problem is plasma mass separation. In a recent study, the efficiency of plasma mass separation in a configuration with a potential well and a homogeneous magnetic field was experimentally demonstrated. This article examines the possibility of increasing the distance between the deposition regions of charged particles with different masses by varying the profile of the electric field potential. Such correlation can be considered as the control in a system of active particles. A cylindrical coordinate system is used. The electric field is axially symmetrical, and the magnetic field is directed along the axis of the symmetry. The corresponding mathematical problem was solved in a general way. The criteria for increasing the distance between the deposition areas of the “light” and “heavy” components of the mixture have been formulated. A high sensitivity of particle trajectories to the electric field potential in the region of the pericentres of the trajectories of charged particles was detected. Recommendations for the practical implementation of the optimal spatial separation of ion fluxes are proposed.

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“…While very attractive, the practicality of this scheme remains a question. Indeed, while control has been successfully demonstrated under certain conditions [31,32], other experiments reported more contrasted results (see Ref. [13] for a more extensive discussion of end-electrodes biasing experiments in linear geometry).…”

Section: Introductionmentioning

confidence: 99%

Trade-off in perpendicular electric field control using negatively biased emissive end-electrodes

Trotabas,

Gueroult

2021

Preprint

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The benefits of thermionic emission from negatively biased electrodes for perpendicular electric field control in a magnetized plasma are examined through its combined effects on the sheath and on the plasma potential variation along magnetic field lines. By increasing the radial current flowing through the plasma thermionic emission is confirmed to improve control over the plasma potential at the sheath edge compared to the case of a cold electrode. Conversely, thermionic emission is shown to be responsible for an increase of the plasma potential drop along magnetic field lines in the quasi-neutral plasma. These results suggest that there exists a trade-off between electric field longitudinal uniformity and amplitude when using negatively biased emissive electrodes to control the perpendicular electric field in a magnetized plasma.

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Advances and problems in plasma-optical mass-separation

Cited by 30 publications

References 8 publications

ExB flows for high-throughput plasma mass separation

ExB flows for high-throughput plasma mass separation

The Optimal Axis-Symmetrical Plasma Potential Distribution for Plasma Mass Separation

Trade-off in perpendicular electric field control using negatively biased emissive end-electrodes

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