Gas phase trapped ion studies of collisionally formed MgC60+ complexes
Bibliographic record
Abstract
A series of experiments were performed to study the formation of MgC60+ complexes via Mg++C60 collisions, and to study the structure and stability of the resulting complexes via optical spectroscopy and mass spectrometry. Collision experiments were carried out in a linear ion trap apparatus under conditions of controlled collision energies, reactant densities, and buffer gas pressure. Ion trap mass spectrometry was used to measure the relative reaction rates for complex formation, charge transfer, and fragmentation reactions in Mg++C60 collisions. Laser-induced photodissociation was then used to study the MgC60+ complexes in order to measure their stability and identify their molecular structure. Absolute photodissociation cross sections were determined for complexes generated at low collision energies and reactant densities over the wavelength range of 1300–280 nm and were in the range from 2×10−20 cm2 to 5×10−17 cm2 in magnitude. The shape of the generated cross-section curve indicates that at low collision energies most of these complexes are exohedrals. More refined measurements of samples generated at optimum buffer gas pressures and higher collision energies demonstrated the existence of a second more slowly dissociating fraction that apparently results from the presence of endohedral complexes.
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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".