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Record W2755625641 · doi:10.1139/cjp-2017-0160

Profils de raies spectrales dans les plasmas magnétisés : effet Stark motionnel

2017· article· fr· W2755625641 on OpenAlexvenueno aff
K. Touati, K. Chenini, Mohammed Tayeb Meftah

Bibliographic record

VenueCanadian Journal of Physics · 2017
Typearticle
Languagefr
FieldPhysics and Astronomy
TopicMagnetic confinement fusion research
Canadian institutionsnot available
Fundersnot available
KeywordsPhysicsHumanitiesArt

Abstract

fetched live from OpenAlex

En reprenant les travaux antérieurs de Nguyen-Hoe et ses collaborateurs sur la raie Lyman-α et en introduisant les effets de la structure interne de l’émetteur, les effets dus au champ de Lorentz (effet Stark motionnel) et les effets dus au mouvement de l’émetteur (effet Doppler), nous avons développé un modèle qui nous a permis d’obtenir des profils de raies comparables à ceux observés au bord du Tokamak Tore Supra. Dans cette région du bord de Tokamak, la température est relativement inférieure à celle du plasma du cœur. Donc l’hypothèse qui consiste à considérer que la vitesse de l’émetteur est purement thermique, et égale à (kBT/M)1/2, n’est plus valable dans ces conditions. Nous avons donc considéré, pour la première fois, que la vitesse des émetteurs est distribuée selon la distribution de Maxwell. Un meilleur accord global a été obtenu entre le spectre calculé et l’observation. Les profils de raies expérimentaux ont été modélisés à l’aide des profils théoriques en tenant compte des effets Doppler, Stark et Zeeman. Cette analyse montre qu’il est nécessaire de prendre en compte au moins deux populations d’atomes de deutérium distinctes. Notre modèle a permis donc le diagnostic des différentes populations de neutres de deutérium ainsi que la détermination simultanée de plusieurs paramètres du plasma.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame machine prediction

Teacher imitation

Not 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.

metaresearch head score (Codex)0.001
metaresearch head score (Gemma)0.001
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Bench or experimental · Consensus signal: Bench or experimental
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.003
Threshold uncertainty score0.009

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0010.001
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.001
Scholarly communication0.0010.001
Open science0.0010.000
Research integrity0.0000.001
Insufficient payload (model declined to judge)0.0030.000

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.

Opus teacher head0.026
GPT teacher head0.260
Teacher spread0.235 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designBench or experimental
Domainnot available
GenreEmpirical

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".

Quick stats

Citations2
Published2017
Admission routes1
Has abstractyes

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