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Why this work is in the frame
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Bibliographic record
Abstract
We study the $2S\ensuremath{-}3S$ transition of $^{6,7}\mathrm{L}\mathrm{i}$ by high-precision laser spectroscopy using two-photon Doppler-free excitation and photoionization detection. Interferometric cross referencing to metrologic Rb $3S\ensuremath{-}5D$ two-photon transitions allowed measurement of the transition isotope shift and hyperfine splitting in the $3S$ state with precision at the 30 kHz level. The results are $\mathrm{I}\mathrm{S}=11\text{ }453.734(30)\text{ }\text{ }\mathrm{M}\mathrm{H}\mathrm{z}$, ${A}_{3S}(^{6}\mathrm{L}\mathrm{i})=35.263(15)\text{ }\text{ }\mathrm{M}\mathrm{H}\mathrm{z}$, and ${A}_{3S}(^{7}\mathrm{L}\mathrm{i})=93.106(11)\text{ }\text{ }\mathrm{M}\mathrm{H}\mathrm{z}$. Combined with recent theoretical work, the isotope shift yields a new value for the change in squared nuclear charge radii $\ensuremath{\Delta}{R}^{2}=0.47(5)\text{ }{\mathrm{f}\mathrm{m}}^{2}$. This is compared with other work and some existing discrepancies are resolved.
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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 | 0.004 | 0.002 |
| Meta-epidemiology (narrow) | 0.003 | 0.005 |
| Meta-epidemiology (broad) | 0.001 | 0.006 |
| Bibliometrics | 0.001 | 0.002 |
| Science and technology studies | 0.003 | 0.004 |
| Scholarly communication | 0.002 | 0.003 |
| Open science | 0.005 | 0.005 |
| Research integrity | 0.003 | 0.004 |
| Insufficient payload (model declined to judge) | 0.056 | 0.003 |
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