Investigating the structure of neutron rich calcium isotopes
Bibliographic record
Abstract
The behavior of neutron and proton rich nuclei that lie far from the region of stability is a matter of great scientific interest.This is because not only do these nuclei play important roles in stellar nucleosynthesis events such as the r-process, but they also allow us to observe changes in the nuclear shell structure, which helps shape our understanding of the nuclear interaction.This behavior is often attributable to the existence of shell closures, that occur at a few specific numbers of protons and neutrons.Forming a complete understanding of such shell closures requires knowledge regarding the orbital occupancies of these nuclei.Through an experiment conducted at TRIUMF, Canada's particle accelerator center, the orbital occupancies of neutron rich Calcium isotopes have been probed.These nuclei, with a conventional closed proton shell of Z = 20, draw interest with new neutron shells signaled at N=32 and 34.An overview of the experimental process and subsequent analysis will be detailed throughout the following discussion.The overview of the experiment will detail the conditions and methods used, while the discussion of the analysis will review the steps undertaken towards the construction of 50 Ca(d,d) 50 Ca Q-Value spectra.
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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 | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.002 |
| Science and technology studies | 0.003 | 0.002 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 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 teacher head, 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".