Temperature Dependent Absorption Cross-Sections Of Pftba
Bibliographic record
Abstract
We present temperature-dependent absorption cross sections of perfluorotributylamine (PFTBA). PFTBA is a fully-fluorinated liquid commonly used in electronic reliability and quality testing. PFTBA vapour can be considered a potential greenhouse gas due being radiatively active in the mid-IR spectral region and having a long atmospheric lifetime. A recent paper by Hong <em>et al</em>.<sup>1</sup> as well as comparisons with previous works for the ethylene calculationsc determined that PFTBA has the highest radiative efficiency of any compound detected in the atmosphere with a detected a mixing ratio of 0.18 parts per trillion by volume over Toronto, ON. Theoretical density functional theory (DFT) calculations are done using the B3LYP method and the 6-311G(d,p) basis set. The calculations have determined the optimized geometrical configuration and IR intensities and wavenumbers of the harmonic frequencies for both PFBAm (N(CF2CF2CF2CF3)3) and its congener (F3CN(CF2CF2CF2CF3)2). Experimental cross sections are derived from Fourier transform spectroscopy performed from 600-1450 cm<sup>−1 </sup>at a resolution of 0.02 cm<sup>−1 </sup>for room temperature and above. These experimental results are compared to compared to previous measurements of PFTBA made at room temperature by Young<sup>2</sup>.
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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) | 0.002 | 0.001 |
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".