Short wavelength temperature gradient driven modes in tokamaks
Why this work is in the frame
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Bibliographic record
Abstract
Stability analysis of tokamaks based on a fully kinetic, electromagnetic integral equation code indicates the existence of a temperature gradient driven instability in the short wavelength regime (k⊥ρi)2>1. The mode propagates in the ion diamagnetic direction (ion mode with ωr<0) and requires that both ηi and ηe exceed thresholds. Circulating (untrapped) electrons are not adiabatic and parallel electron dynamics provides destabilization. Trapped electrons are not essential for the mode. Toroidicity has a stabilizing influence and the growth rate does not vanish in the slab limit. The growth rate is approximately proportional to |s| where s is the magnetic shear parameter. The mode is subject to finite α (ballooning parameter) stabilization as the conventional ηi mode in the long wavelength regime (k⊥ρi)2<1.
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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) | 0.011 | 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