Natural solution of the low-lying level structure of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mmultiscripts> <mml:mi mathvariant="normal">I</mml:mi> <mml:mprescripts/> <mml:none/> <mml:mn>114</mml:mn> </mml:mmultiscripts> </mml:math> from complementary measurements and new interpretation of the high-spin bands
Bibliographic record
Abstract
The complex low-spin structure of the proton-rich $_{\phantom{\rule{0.28em}{0ex}}\phantom{\rule{0.28em}{0ex}}53}^{114}\mathrm{I}_{61}$ nucleus has been investigated with the JUROGAM 3 germanium array coupled with the MARA mass separator using the $^{58}\mathrm{Ni}(^{64}\mathrm{Zn},\ensuremath{\alpha}3\mathrm{pn}$) fusion-evaporation reaction. The depopulation of the previously known high-spin bands to low-spin states is firmly established, fixing the excitation energies, spins and parities of the states. The present results combined with fragmentary communications and results published from the decay of separated mass-114 beams measured long time ago at ORNL and GSI, led to the conclusion that the previously known 6 s, 266 keV, $I=(7)$ isomer has to be repositioned at 134 keV and its spin-parity changed to ${4}^{+}$. Three new isomers are identified from intensity imbalance of the populating and depopulating transitions, one at 204 keV with $I={6}^{+}$ and a half-life longer than several nanoseconds, and two at 635 and 966 keV with $I={5}^{\ensuremath{-}}$ and $I={7}^{\ensuremath{-}}$, respectively, with half-lives of a few nanoseconds. The spins of one high-spin band are changed from odd to even and a new interpretation of the two resulting bands with even spins is proposed based on cranked Nilsson-Strutinsky calculations. From the comparison of the observed low-spin states with shell-model calculations it is suggested that the states of the ground-state cascade are oblate, while the other positive-parity states and the high-spin negative-parity bands are prolate.
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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 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.002 |
| Insufficient payload (model declined to judge) | 0.016 | 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".