Dynamics of Beam Interaction and Damage within a Thin TEM Specimen
Bibliographic record
Abstract
Specimen heating is an unavoidable consequence of the inelastic scattering of primary electrons.For a thin-slab specimen, the temperature at the center of the beam increases with a time constant that depends on the beam radius R and to a lesser extent on the distance R 0 to the heat sink [1].The temperature rise T is typically below 10 K for beam currents of 1 nA or less; see Fig. 1.Electrostatic charging occurs for poorly conducting samples (density , thickness t), with a rise time 0 r / that ranges from fs to ms, depending on the electrical conductivity ; see Table 1.For small-radius probes, an equilibrium potential V s may be reached, resulting in hole drilling due to ion emission [2] if the local charge density exceeds about 0.1 electrons/atom, or in ionic drift or dielectric breakdown caused by the field dV/dr near the edge of the probe [3].
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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 | 0.001 |
| 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 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".