First identification of rotational band structures in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>Re</mml:mi><mml:mn>91</mml:mn><mml:none/><mml:mprescripts/><mml:mn>75</mml:mn><mml:mn>166</mml:mn></mml:mmultiscripts></mml:math>
Bibliographic record
Abstract
Excited states in the odd-odd, highly neutron-deficient nucleus $^{166}\mathrm{Re}$ have been investigated via the $^{92}\mathrm{Mo}(^{78}\mathrm{Kr},\phantom{\rule{0.16em}{0ex}}3p1n)^{166}\mathrm{Re}$ reaction. Prompt $\ensuremath{\gamma}$ rays were detected by the JUROGAM II $\ensuremath{\gamma}$-ray spectrometer, and the recoiling fusion-evaporation products were separated by the recoil ion transport unit (RITU) gas-filled recoil separator and implanted into the Gamma Recoil Electron Alpha Tagging spectrometer located at the RITU focal plane. The tagging and coincidence techniques were applied to identify the $\ensuremath{\gamma}$-ray transitions in $^{166}\mathrm{Re}$, revealing two collective, strongly coupled rotational structures, for the first time. The more strongly populated band structure is assigned to the $\ensuremath{\pi}{h}_{11/2}[514]9/{2}^{\ensuremath{-}}\ensuremath{\bigotimes}\ensuremath{\nu}{i}_{13/2}[660]1/{2}^{+}$ Nilsson configuration, while the weaker structure is assigned to be built on a two-quasiparticle state of mixed $\ensuremath{\pi}{h}_{11/2}[514]9/{2}^{\ensuremath{-}}\ensuremath{\bigotimes}\ensuremath{\nu}[{h}_{9/2}{f}_{7/2}]3/{2}^{\ensuremath{-}}$ character. The configuration assignments are based on the electromagnetic characteristics and rotational properties, in comparison with predictions from total Routhian surface and particle-rotor model calculations.
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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 | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.008 | 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 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".