Tapered-capillary pinch plasma as a candidate for bright EUV source
Bibliographic record
Abstract
Summary form only given, as follows. In connection with the development of a bright EUV source, dynamics of pinching plasma in tapered capillary tubes is investigated. The basic configuration of the experimental setup is quite similar to conventional capillary source except the shape of the capillary wall. The capillary has thin conical wall, i.e., a Laval Nozzle geometry, and into which a working gas is supersonically injected. A high current discharge makes strong but slightly declining azimuthal magnetic field, which contracts the plasma radially and also axially. If the discharge condition influencing the plasma behavior is optimized, the plasma is expected to be compressed radially and also driven axially by the B-gradient made by the phased pinching. As the first step of the research and development, temporal behaviors of the plasma are observed using a fast streak camera. As has been predicted by numerical simulations, the pinching behaviors depend on the initial gas density, capillary length and the aspect ratio of the tubes. At a proper discharge condition, the framing photos confirm the point like formation and the pinching effect in radial and also axial direction. In the presentation, prospect for future study is discussed with the preliminary experimental results.
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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 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 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".