Increased Relative Velocity due to Enhanced Magnetic Pressure Gradient for the Collision Experiment of High-Beta Plasmoids
Bibliographic record
Abstract
The FAT-CM device at Nihon University has been modified to expand the experimental relative velocity range of the collisional merging of high-beta plasmoids. This experiment focuses on the ensuing collisionless shockwave that is generated. The relative velocity was increased by making modifications to enhance the magnetic pressure gradient at the exit from the formation regions of the device. The purpose of this modification is to increase the relative velocity up to ∼1000 km/s at the collision of the plasmoids. This is selected to be comparable to the expansion speed of a supernova remnant that generates collisionless shocks. To generate collisionless shocks, the high-temperature and low density plasmoid generation technique is also required. After the modification, the relative velocity is nearly doubled, reaching up to 600 km/s by increasing the magnetic pressure gradient and reducing the mass of the plasmoid. The mean free path became longer than the length of a plasmoid due to increased ion temperature. The experimental range of the FAT-CM device has been expanded to the collisionless region successfully.
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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 | 0.001 |
| 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 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.002 | 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".