The permanent electric dipole moments of the B 2Σ+ and X 2Σ+ states of lanthanum imide, LaNH
Bibliographic record
Abstract
The optical Stark effect has been measured for the B̃ 2Σ+−X̃ 2Σ+, 301, and 201(P′=3/2) bands of lanthanum imide, LaNH, prepared in a supersonic molecular beam. The permanent electric dipole moment, μ, for the X̃ 2Σ+ state was determined to be 2.53±0.06 D from measurements of the second-order Stark shifts in the B̃ 2Σ+−X̃ 2Σ+, 301 band. (ν3 is the La–N stretching vibration, of symmetry σ+.) The dipole moment in the B̃ 2Σ+ state is too small to be determined from the Stark shifts in this band, but could be determined from the first-order Stark splittings in the P′=3/2 component of the B̃ 2Σ+, 21 bending fundamental (of upper state π symmetry); it was found to be 0.3±0.2 D. A comparison is made with LaO and other isovalent molecules involving Group IIIA atoms.
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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 | 0.000 | 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) | 0.001 | 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".