Doublet asymmetry in divalent tin Mössbauer spectra
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Bibliographic record
Abstract
In randomly oriented polycrystalline samples, the probability of the two transitions for quadrupolar interactions of 119Sn is the same and therefore the two lines should have the same intensity, resulting in a symmetric doublet. Several cases taken from the divalent tin materials prepared in our laboratory depart from the expected symmetric doublet: (i) case of a non-stereoactive electron lone pair on tin: single line spectrum; (ii) case of a stereoactive lone pair resulting in highly preferred orientation: strongly asymmetric doublet, varying with the orientation of the sample in the γ-ray beam, similar to the case of a single crystal; (iii) case of a stereoactive lone pair resulting in high bonding anisotropy: asymmetric doublet, varying with temperature (Goldanskii-Karyagin effect); (iv) case of a mixture of the two kinds of tin(II), i.e., with a non-stereoactive lone pair and with a stereoactive lone pair, giving spectra varying from a very highly asymmetric doublet to a single line, without significant line broadening.
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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 | 0.001 | 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 | 0.001 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.003 | 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 it