Fourier transform and multiplexed intrapulse quantum cascade laser spectrometer measurements of NO<sub>2</sub> and its dimer N<sub>2</sub>O<sub>4</sub>
Bibliographic record
Abstract
A quantitative comparison has been made between the spectra recorded using an infrared Fourier transform (FT) spectrometer, and those based upon the use of chirped pulse quantum cascade (QC) lasers. The system chosen for this comparison is the chemical equilibrium between NO 2 and its dimer N 2 O 4 . It is studied by making spectroscopic measurements of the dimerization of nitrogen dioxide (NO 2 ). The intrapulse QC laser spectrometer used long duration pulses of wavelengths near 7.84, 7.46, and 6.14 μm, and a path length of 62 m, and the Université libre de Bruxelles (Brussels, Belgium) FTspectrometer used a path length of 21.1 cm. In the direct comparison of pairs of spectral regions allowed by the dual pulse system, it was possible to compare the 7.84 μm region, where both the spectra of the monomer and dimer are observed, with the 7.46 and 6.14 μm regions in which only monomer lines are detected. In the 7.84 μm region the NO 2 absorption lines could be detected only when the dimer N 2 O 4 is formed in the monomer NO 2 in the QC laser spectra.
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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) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| 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".