On collisionality dependence of the neoclassical tearing modes
Bibliographic record
Abstract
The problem of validity of the semi-phenomenological model of collisionality dependence of the polarization current contribution into the generalized Rutherford equation for neoclassical tearing modes proposed by Wilson H R et al (1996 Plasma Phys. Control. Fusion 38 A149) and later discussed and analysed by Maraschek M et al (1999 Plasma Phys. Control. Fusion 41 L1) is considered. It is shown that the collisionality dependence of the polarization current in this model contradicts that in the theory of linear MHD instabilities. Because of this, the above model is, to some extent, ad hoc . Since this model cannot be substantiated by any theory developed up until now, it should be used with care for evaluation of the plasma behaviour in ITER. The discussed disagreement between experiments, for which interpretation of this model was used, and a recent theory of magnetic islands may serve as a stimulus for further development of the theory.
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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 | 0.001 | 0.004 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.000 |
| Science and technology studies | 0.000 | 0.002 |
| Scholarly communication | 0.001 | 0.002 |
| Open science | 0.002 | 0.001 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.003 | 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".