ABSTRACT NUCLEAR STRUCTURE OF 112CD THROUGH STUDIES OF β DECAY
Bibliographic record
Abstract
The cadmium isotopes, especially 112Cd, have been considered exceptional ex-amples of vibrational nuclei. Previous studies of this pivotal nucleus have lacked sensitivity to weak low-energy branches, often the most important transitions to es-tablish collectivity. A high-statistics measurement of the β decays of 112Ag and 112In to 112Cd was performed using the 8π γ-ray spectrometer at the TRIUMF-ISAC facil-ity to determine the detailed nuclear structure of 112Cd. The interacting boson model is used to predict the level energies and electromagnetic transition strengths in 112Cd and compare them with experimental results. Details of the experimental data at higher energies cannot be reproduced in 112Cd, revealing a breakdown of vibrational motion at the 3-phonon level. Thus, there is a possibility that 112Cd does not behave as a vibrational nucleus and the fundamental physics describing its motion is missing. Acknowledgements During the last two years a lot of time and work has been put into completing this thesis and it has been a truly gratifying process. Many people have contributed to this thesis and I would like to thank each and every one of them. First, I would like to thank my supervisor, Dr. Paul Garrett for all of his patience and guidance, not to mention the countless hours he spent answering my endless list of questions. I also want to thank him for pushing me to speak at conferences and having confidence in me when I didn’t have any confidence in myself. I would also like to thank Carl Svensson and the rest of the Guelph Nuclear Physics
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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 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 0.000 |
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".