Scattering-Based Stochastic Process Attracting Electrons Inward under Antiparallel Gradient Magnetic Fields

Sugawara, Hirotake

doi:10.7566/jpsj.82.064501

Cited by 3 publications

(1 citation statement)

References 13 publications

(16 reference statements)

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“…Electron reflection occurred during the reciprocation at the boundary or was induced by the magnetic mirror effect. A libration of the gyrocenter by the E × B drift 27) was also observed. The electron deviated from the guiding magnetic flux lines by collisional scattering, meandering in the weak B field region around the X point, or rf-resonant acceleration 23) near the region of jBj ¼ B ECR .…”

Section: Fundamental Electron Motionmentioning

confidence: 80%

Fundamental study on filter effect of confronting divergent magnetic fields applied to low-pressure inductively coupled plasmas

Sugawara¹,

Ogino²

2016

Jpn. J. Appl. Phys.

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The electron motion under confronting divergent magnetic fields (CDMFs) applied to inductively coupled plasmas was simulated using a Monte Carlo method. The CDMFs induced by two coaxial dc coils confined electrons in one side of the separatrix of the CDMFs. However, electrons diffused across the separatrix mainly in two ways. One was the displacement of their gyrocenters due to scattering near the outer part of the separatrix. This process tended to occur for high-energy electrons with correspondingly large gyroradii. The other was passage through the weak magnetic field around the center. This process was allowed for low-energy electrons. The position-dependent selectivity about the electron energy was pointed out as a seed property for applications of the separatrix as a magnetic filter or shutter. The mechanism by which the functions of the separatrix emerge was explained from a viewpoint of electron motion under the CDMFs.

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Section: Fundamental Electron Motionmentioning

confidence: 80%

Fundamental study on filter effect of confronting divergent magnetic fields applied to low-pressure inductively coupled plasmas

Sugawara¹,

Ogino²

2016

Jpn. J. Appl. Phys.

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On Judgement of Electron Escape for Evaluation of the Magnetic Confinement Effect in Simulations of Inductively Coupled Plasmas under Confronting Divergent Magnetic Fields

Yamamoto

Sugawara

2017

IEEJ Trans. FM

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Analysis of electron heating due to partial resonance in an inductively coupled plasma under confronting divergent magnetic fields

Okazaki

Sugawara

2023

Jpn. J. Appl. Phys.

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We investigate the partial resonance as one of the mechanisms of the electron heating to sustain inductively coupled plasmas driven under confronting divergent magnetic fields having an electron confinement function. Dependence of the partial resonance on operating conditions are observed. The electron energy gain (EEG), defined as a measure for evaluation of the partial resonance, was calculated by a Monte Carlo method under various magnetic field strengths and the RF antenna positions. It is confirmed that the partial resonance is observed in the resonant region even in low electric field and strong magnetic field. As an attempt to utilize the partial resonance, we demonstrate enhancement of the EEG and resulting ionization in the resonant region by placing the RF antenna near a region where the magnetic field lines running through the resonant region reach. 

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Scattering-Based Stochastic Process Attracting Electrons Inward under Antiparallel Gradient Magnetic Fields

Cited by 3 publications

References 13 publications

Fundamental study on filter effect of confronting divergent magnetic fields applied to low-pressure inductively coupled plasmas

Fundamental study on filter effect of confronting divergent magnetic fields applied to low-pressure inductively coupled plasmas

On Judgement of Electron Escape for Evaluation of the Magnetic Confinement Effect in Simulations of Inductively Coupled Plasmas under Confronting Divergent Magnetic Fields

Analysis of electron heating due to partial resonance in an inductively coupled plasma under confronting divergent magnetic fields

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