Formation of Nascent Product N<sub>2</sub>O from the Irradiation of O<sub>2</sub> in Icy N<sub>2</sub>
Bibliographic record
Abstract
Abstract Products O3, N, NO, NO2, N2O, c-(NO)2, and excited states of O2 were detected after the photolysis of solid O2 in icy N2 near 4 K with radiation at 200 nm. The temporal profiles of these products enable the derivation of a mechanism for the photochemical reactions in this system: dissociation of O2 first-generated O 3P that reacted with nearby N2 to yield N2O. Other products resulted from the secondary photolysis of N2O and the reactions of O with N2O. The reaction of O with O2 to form O3 was impeded by the small concentration of the latter, which requires substantial migration through the N2 lattice. However, sufficient O3 was eventually formed to enable detection either directly from O coming from O2 or indirectly through N2O. These results enhance our understanding of the evolution of the transformation of oxygen and nitrogen in irradiated ices and have possible astrophysical applications.
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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".