Spectroscopy and lifetime measurements in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>Te</mml:mi><mml:mprescripts/><mml:none/><mml:mrow><mml:mn>134</mml:mn><mml:mo>,</mml:mo><mml:mn>136</mml:mn><mml:mo>,</mml:mo><mml:mn>138</mml:mn></mml:mrow></mml:mmultiscripts></mml:math> isotopes and implications for the nuclear structure beyond <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>N</mml:mi><mml:mo>=</mml:mo><mml:mn>82</mml:mn></mml:mrow></mml:math>
Bibliographic record
Abstract
We report on spectroscopic information and lifetime measurements of even-even neutron-rich Te isotopes. Excited states were populated in fast-neutron induced fission of $^{238}\mathrm{U}$ at the ALTO facility of IJCLab with the LICORNE neutron source and detected using the hybrid $\ensuremath{\nu}$-ball spectrometer. We provide first results on lifetimes of the ${6}_{1}^{+}$ state in $^{136}\mathrm{Te}$ and the (${6}_{1}^{+}$), (${4}_{1}^{+}$), and (${2}_{1}^{+}$) states in $^{138}\mathrm{Te}$ and discuss the results in the context of large-scale shell-model calculations. The level schemes of $^{136}\mathrm{Te}$ and $^{138}\mathrm{Te}$ are revised in terms of lifetimes of their ${2}_{1}^{+},{4}_{1}^{+}$ states and updated information on the $({4}_{2}^{+})$ state in $^{136}\mathrm{Te}$ is presented. In addition, previously reported data on spectroscopy and lifetimes in $^{134}\mathrm{Te}$ are reexamined. This work provides new insights into the evolution of collectivity for Te isotopes with $N=82,84,86$.
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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 | 0.005 | 0.004 |
| Meta-epidemiology (narrow) | 0.004 | 0.006 |
| Meta-epidemiology (broad) | 0.002 | 0.006 |
| Bibliometrics | 0.001 | 0.004 |
| Science and technology studies | 0.006 | 0.006 |
| Scholarly communication | 0.005 | 0.005 |
| Open science | 0.007 | 0.008 |
| Research integrity | 0.004 | 0.006 |
| Insufficient payload (model declined to judge) | 0.072 | 0.005 |
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".