Temperature Dependence of the Deuterium Concentration in SiC Codeposits
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Bibliographic record
Abstract
Silicon carbide is a low-Z material seen as a possible alternative to graphite for some plasma-facing components in magnetic confinement fusion reactors. This work focuses on measurements of deuterium content of SiC codeposits created by ion beam sputter deposition at temperatures ranging from 300 – 900 K. Various surface analysis techniques are used to analyze deposits of SiC as well as C and thermal desorption spectroscopy is used to measure deuterium content. The temperature dependence very closely followed the trends observed for plasma-created codeposits, with the D content decreasing above 400 K. The D content of such deposits was also found to be very similar to the D content of carbon deposits created in the same way. This suggests that the tritium retention associated with SiC first wall materials would be very similar to that of a graphite first wall.
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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 | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.005 | 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 it