Kinetic modeling of an atmospheric pressure argon plasma in contact with a floating collector
Bibliographic record
Abstract
Summary form only given, as follows. The problem of an atmospheric pressure argon plasma in contact with a floating collector is considered through the framework of the kinetic Boltzmann equation. A BGK collision term where only weak deviations from the Maxwellian velocity distribution are allowed is considered for the electron equation. This collision term for the ion is more comprehensive and accounts for large potential deviations from the Maxwellian distribution. Due to the relatively low mean energies expected, only the momentum transfer collisions are considered. The normalized Boltzmann equations are solved self-consistently with Poisson's equation using the method of fractional steps with cubic spline interpolation. The results show that the sheath region extends about 25 Debye lengths from the floating collector surface and that the sheath voltage drop is /spl sim/6.5 V. The electron current density peaks at a distance of /spl sim/9 Debye lengths while the ion current remains essentially constant from the plasma edge to the collector up to a distance of /spl sim/9 Debye lengths, and then sharply drops to zero at the collector surface. Both currents at the collector are similar in magnitude giving rise to a zero collection current. The electron velocity distribution remains very close to a Maxwellian throughout the x-space while the ion distribution shows a smooth transition from a Maxwellian at the plasma edge to a distribution showing strong ion accelerations towards negative velocities near the collector surface. Further work is in progress to extend the kinetic model to include a thermionic electron beam and aims at a kinetic description of the cathode region of high-pressure arc discharges.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".