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 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 | 0.007 | 0.004 |
| Meta-epidemiology (narrow) | 0.006 | 0.010 |
| Meta-epidemiology (broad) | 0.003 | 0.009 |
| Bibliometrics | 0.002 | 0.005 |
| Science and technology studies | 0.009 | 0.007 |
| Scholarly communication | 0.006 | 0.008 |
| Open science | 0.010 | 0.011 |
| Research integrity | 0.007 | 0.010 |
| Insufficient payload (model declined to judge) | 0.025 | 0.008 |
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; both teacher heads agree on what is shown here.
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".