Coulomb excitation of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>Ru</mml:mi><mml:mprescripts/><mml:none/><mml:mn>102</mml:mn></mml:mmultiscripts></mml:math> with <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi mathvariant="normal">C</mml:mi><mml:mprescripts/><mml:none/><mml:mn>12</mml:mn></mml:mmultiscripts></mml:math> and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi mathvariant="normal">O</mml:mi><mml:mprescripts/><mml:none/><mml:mn>16</mml:mn></mml:mmultiscripts></mml:math>
Bibliographic record
Abstract
The Coulomb excitation of $^{102}\mathrm{Ru}$ was performed with beams of $^{12}\mathrm{C}$ and $^{16}\mathrm{O}$ ions. The beam particles scattered at forward angles were momentum analyzed with a magnetic spectrograph. The resolution achieved enabled the populations of the ${2}_{1}^{+}$ state, the unresolved ${2}_{2}^{+}/{4}_{1}^{+}$, and ${2}_{4}^{+}/{3}_{1}^{\ensuremath{-}}$, doublets of states, and the ${3}_{2}^{\ensuremath{-}}$ state to be determined as a function of the scattering angle. These populations are compared with gosia calculations, yielding $B(E2;{2}_{1}^{+}\ensuremath{\rightarrow}{0}_{1}^{+})=41.5\ifmmode\pm\else\textpm\fi{}2.3$ W.u., $B(E2;{2}_{2}^{+}\ensuremath{\rightarrow}{0}_{1}^{+})=1.75\ifmmode\pm\else\textpm\fi{}0.11$ W.u., $B(E3;{3}_{1}^{\ensuremath{-}}\ensuremath{\rightarrow}{0}_{1}^{+})=31.5\ifmmode\pm\else\textpm\fi{}3.5$ W.u., and $B(E3;{3}_{2}^{\ensuremath{-}}\ensuremath{\rightarrow}{0}_{1}^{+})=6.8\ifmmode\pm\else\textpm\fi{}0.5$ W.u. The $B(E3;{3}_{1}^{\ensuremath{-}}\ensuremath{\rightarrow}{0}_{1}^{+})$ value is significantly larger than previously measured. The weakly populated ${2}_{3}^{+}$ state, presumed to be a member of the band built on the ${0}_{2}^{+}$ state, was observed clearly for a single angle only, and a fit to its population results in $B(E2;{2}_{3}^{+}\ensuremath{\rightarrow}{0}_{1}^{+})=0.053\ifmmode\pm\else\textpm\fi{}0.011$ W.u. Using the known $\ensuremath{\gamma}$-ray branching ratios for the ${2}_{3}^{+}$ level, the $B(E2;{2}_{3}^{+}\ensuremath{\rightarrow}{0}_{2}^{+})$ value is calculated to be $18\ifmmode\pm\else\textpm\fi{}4$ W.u., substantially less than the $B(E2;{2}_{1}^{+}\ensuremath{\rightarrow}{0}_{1}^{+})$. This suggests that the deformation of the ${0}_{2}^{+}$ state is lower than that of the ${0}_{1}^{+}$ state. The results are compared with beyond-mean-field calculations with the Gogny-D1S interaction using the symmetry-conserving configuration-mixing method.
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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 | 0.001 | 0.004 |
| Meta-epidemiology (narrow) | 0.002 | 0.001 |
| Meta-epidemiology (broad) | 0.002 | 0.002 |
| Bibliometrics | 0.002 | 0.003 |
| Science and technology studies | 0.003 | 0.001 |
| Scholarly communication | 0.005 | 0.004 |
| Open science | 0.003 | 0.003 |
| Research integrity | 0.003 | 0.005 |
| Insufficient payload (model declined to judge) | 0.387 | 0.258 |
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".