Camera for transmission He+ ion microscopy
Bibliographic record
Abstract
The intensity of transmitted He+ ions and atoms from a focused He+ beam was measured using a direct impact onto a camera located 20 cm below the sample. The camera consisted of a 256 × 256 array of Si p-i-n diodes (pixels) each 55 × 55 μm2 in area. Static, focused beam intensity profiles show a uniform distribution, as expected from the small de Broglie wavelength (80 fm) and coherent source. From the size of the beam spot, the half-angle beam convergence angle can be directly measured and compared with theoretical predictions based on column geometries. The detector count rate was consistent with an efficiency of 75%, when compared to the current measured by electrostatic beam blanking. The intensity profile of a neutral atom component was measured to have a 17% peak or 1.3% integrated intensity at a beam energy of 25 keV, compared to the ion beam. The intensity of transmitted particles through 50 nm amorphous carbon was less than that of graphite flakes, likely affected by thickness and channeling. Transmission images as a function of time to form 20 nm holes in graphite were obtained.
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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 | 0.002 | 0.002 |
| Meta-epidemiology (narrow) | 0.002 | 0.002 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.005 | 0.002 |
| Science and technology studies | 0.002 | 0.001 |
| Scholarly communication | 0.002 | 0.002 |
| Open science | 0.002 | 0.001 |
| Research integrity | 0.002 | 0.003 |
| Insufficient payload (model declined to judge) | 0.201 | 0.040 |
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".