Characteristics of an ion beam in the figuring process on an optical ultra-low expansion glass surface
Why this work is in the frame
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Bibliographic record
Abstract
In this study, an ion source figured out the surface of a glass-ceramic material with an ultra-low thermal expansion coefficient for space optical elements. The investigation of the single-point, line, and square figuring patterns assessed the detailed characteristics of the ion beam. At a fixed ion beam current and processing time, a beam voltage of 600 V led to the greatest removal depth with the narrowest full width at half-maximum (FWHM). The surface roughness under different beam voltages was also examined and discussed. Line figuring with an ion beam voltage of 600 V and a one-dimensional sample moving speed of 0.25 mm/s exhibited a maximum depth removal rate of 19.71 nm/min after being polished 15 times. Two-dimensional square figuring was performed to polish a plane mirror with a diameter of 60 mm, and it successfully reduced its surface’s peak-to-valley value to 18 nm due to the melting heat phenomenon of the glass-ceramic material in ion beam figuring (IBF).
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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 | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 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) | 0.000 | 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