Electron beam-plasma interaction: Linear theory and Vlasov-Poisson simulations
Why this work is in the frame
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Bibliographic record
Abstract
The problem of a weak (nb∕ne∼10−3) electron beam interaction with plasma is investigated by means of linear dispersion theory and electrostatic Vlasov simulations. In the case of a warm electron beam only Langmuir-type modes in a finite wavelength band are excited. Cold beams undergo rapid heating, after which the long-wavelength Langmuir and electron-acoustic modes are damped. As the waves decelerate and heat the beam, new modes with larger wave numbers and smaller phase velocities are excited, while the fastest-growing modes saturate at a finite level. The superposition of these modes with frequencies near electron plasma frequency ωpe and broad k spectrum results in long quasiregular wave packets. The wave packets propagate slowly with group velocities typically 30 times smaller than the phase velocities and are weakly damped by the background electrons.
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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 it