Spectroscopic investigation of sensitized-Cs (6<sup>2</sup> <i>P</i><sub>3/2</sub>6<sup>2</sup><i>P</i><sub>1/2</sub>) laser retrofluorescence in a pure optically thick vapour near a dissipative surface
Bibliographic record
Abstract
A low-power, monochromatic, tunable diode laser is used to selectively populate the cesium 6 2 P 3/2 (F e = 2, 3, 4, 5) hyperfine-structure levels in a pure optically thick vapour in the presence of a dissipative surface. The integrated retrofluorescence intensities for the 852 nm (6 2 P 3/2 → 6 2 S 1/2 ), 894 nm (6 2 P 1/2 → 6 2 S 1/2 )> and 455 nm (7 2 P 3/2 → 6 2 S 1/2 ) lines have been measured and analyzed. When the laser frequency is scanned through the [6 2 S 1/2 (F g ) → 6 2 P 3/2 (F e )] hyperfine resonance line, the sensitized retrofluorescence spectral signal corresponding to the 894 nm line has a profile significantly different from the retrofluorescence signal at the 852 nm line, but rather similar to the profiles of the lines associated with the energy-pooling collisions. The population of the 6 2 P 1/2 atomic level in an optically thick vapour cannot be explained only by the fine-structure excitation transfer process [Cs (6 2 P 3/2 ) + Cs (6 2 S 1/2 ) ↔ Cs (6 2 P 1/2 ) + Cs (6 2 S 1/2 )] usually accepted in an optically thin vapour. We have investigated inelastic collisions in the populating mechanisms of 6 2 P 1/2 level starting from the 6 2 P 3/2 level exited by the monochromatic laser taking into account the presence of an electrically conductive surface. It appears from our experimental and theoretical investigations that, the spectral properties of the laser-induced Cs 894 nm sensitized retrofluorescence in a pure optically thick vapour near a dissipative surface cannot be explained by both the conventional mechanism and cascade collisions. The satisfactory interpretation of the experimental results is an open problem of atomic spectroscopy.PACS Nos.: 32.30, 32.50, 32.70, 32.80, 34.10, 34.50, 42.62
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How this classification was reachedexpand
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) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.002 |
| Insufficient payload (model declined to judge) | 0.000 | 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 teacher head, 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".