Fullerene synthesis in the graphite electrode arc process: local plasma characteristics and correlation with yield
Bibliographic record
Abstract
In order to optimize the fullerene synthesis process based on an electric arc with graphite electrodes, an experimental study using a reactor geometry optimized for plasma spectroscopy is performed to correlate the arc properties with the fullerene formation. Emission spectroscopy studies based on the use of the Swan C2(0,0) rotational system emission spectra were carried out to determine the plasma temperature. The self-absorption effect in the d3Πg, v' = 0 → a3Πu, v'' = 0 C2 band was used for column density determination of C2 molecules and temperatures under various arc discharge conditions. Discharge parameters (pressure, arc current, electrode gap length) are optimized with respect both to the anode erosion rate and the weight percentage of toluene extractable fullerenes in the soot. Local plasma discharge conditions (temperature and density fields) are evaluated and correlated with the C60 yield. Steep temperature gradients around the arc fringes are shown to provide optimal conditions for C60 production.
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How this classification was reachedexpand
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) | 0.000 | 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 teacher head, 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".