Parametric excitation of azimuthally non-symmetric surface waves propagating in metal waveguides filled with isotropic plasma
Bibliographic record
Abstract
The paper is devoted to developing the theory of parametric excitation of electromagnetic waves propagating across the axis of symmetry in cylindrical waveguides partially filled with isotropic plasma. The problem is studied theoretically in the fluid approximation and expressions for the wave fields are derived from Maxwell’s equations. The azimuthally non-symmetric electromagnetic waves propagate in the form of wave packets which are approximately described by the main azimuthal harmonic and two nearest satellite temporal harmonics. The boundary condition, which is cast in a nonlinear form, describes the flowing of a surface current on the plasma interface. This condition allows one to derive an infinite set of equations for harmonics of the tangential electric field of azimuthally non-symmetric surface waves. The dependence of the growth rate of the parametric instability of these waves on parameters of the plasma-filled waveguide and alternating electric field is studied both analytically and numerically.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| 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 | 0.001 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 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 source (direct Gemma or distilled Codex), 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".