Absolute Cross Sections for the Electron-Induced Formation of Unsaturated Hydrocarbons from Solid Cyclopropane
Bibliographic record
Abstract
Electron-stimulated reactions in solid films of cyclopropane, condensed on Ar spacers deposited on a Pt substrate, were induced and monitored simultaneously using a high-resolution electron-energy-loss spectrometer. Absolute cross sections for the formation of propene, including similar unsaturated species, were independently determined as σ p = (7.2± 3.9) × 10 -17 cm 2 and σ p = (9.6 ± 4.8) × 10 -17 cm 2 at an incident electron energy of 15 eV using both characteristic electronic and vibrational energy losses, respectively. The cross section obtained as a function of the film thickness of cyclopropane deposited on a fixed 5-layer spacer of Ar was found to increase above 3-layer coverage. This suggests that intermolecular reactions are not only involved, but also increase the production rate of unsaturated compounds in multilayer films.
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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) | 0.003 | 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".