The structure of normal and supercritical boron trifluoride and related studies
Bibliographic record
Abstract
High-density amorphous ice, prepared by compression of ice I, has been annealed isothermally for several hours at 95, 100, 105 and 115 k and structural changes have been continuously monitored using synchrotron x-ray and neutron diffraction techniques.During each anneal structural changes are indicated by changes in the first sharp diffraction peak position in the static structure factor.During each anneal the peak position is initially observed to rapidly change position toward the LDA phase, however, at each anneal temperature the transformation is observed to stop before completion of the HDA to LDA transition, resulting in several metastable intermediate phases.The structure of these intermediate phases were then temperature quenched by rapidly cooling the sample to 40 k, thus allowing detailed S(Q) and G(r) functions to be determined.It is shown that each intermediate phase is unique and the static structure factor functions cannot be reproduced by any linear combination of the measured s(Q) of HDA and LDA.These studies also represent the first comparison of data collected using synchrotron x-ray and neutron diffraction from subsections of the same sample.Using this technique we have quench recovered a total of three metastable intermediate phases, with the implication that there are and infinite number of possible states, thus indicating that the HDA to LDA transition at zero pressure is much more complicated than first thought.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.001 | 0.000 |
| Science and technology studies | 0.001 | 0.001 |
| 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 | 0.000 |
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".