Molecular-beam optical Stark and Zeeman study of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>A</mml:mi></mml:mrow></mml:math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow/><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msup><mml:mi>Π</mml:mi></mml:mrow></mml:math>--<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>X</mml:mi></mml:mrow></mml:math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow/><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msup><mml:msup><mml:mi>Σ</mml:mi><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>(0,0) band system of BaF
Bibliographic record
Abstract
The $A{ }^{2}\ensuremath{\Pi}\ensuremath{-}X{ }^{2}{\ensuremath{\Sigma}}^{+}$ (0,0) band system of barium monofluoride (BaF) has been recorded using high-resolution laser-induced fluorescence spectroscopy both field-free and in the presence of static magnetic and electric fields. The field-free spectra for the $^{135}\mathrm{Ba}$F, $^{137}\mathrm{Ba}$F, and $^{138}\mathrm{Ba}$F isotopologues were modeled to generate an improved set of spectroscopic constants for the $A{ }^{2}$\ensuremath{\Pi}($\ensuremath{\upsilon}$ $=$ 0) and $X{ }^{2}$\ensuremath{\Sigma}${}^{+}$($\ensuremath{\upsilon}$ $=$ 0) states. The observed optical Stark shifts for the $^{138}\mathrm{Ba}$F isotopologue were analyzed to produce the permanent electric dipole moments of 1.50(2) and 1.31(2) D for the $A{ }^{2}$\ensuremath{\Pi}${}_{1/2}$($\ensuremath{\upsilon}$ $=$ 0) and $A{ }^{2}$\ensuremath{\Pi}${}_{3/2}$ ($\ensuremath{\upsilon}$ $=$ 0) states, respectively. The observed optical Zeeman shifts for the $^{138}\mathrm{Ba}$F isotopologue were analyzed to produce a set of magnetic $g$ factors for the $A{ }^{2}$\ensuremath{\Pi}($\ensuremath{\upsilon}$ $=$ 0) and $X{ }^{2}$\ensuremath{\Sigma}${}^{+}$($\ensuremath{\upsilon}$ $=$ 0) states.
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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 | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.041 | 0.002 |
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".