sem_se_universal_curve — GENERATIVE sem op

• Data kinds: none → signal (an op determined by its arguments alone — it takes no image or data input)

• Call: import fullseye as fs; fs.ledger.sem_se_universal_curve(e_over_emax=None) (to call the implementation directly, import sem; sem.sem_se_universal_curve(e_over_emax=None); from the registry, opsgenerative.get("sem_se_universal_curve"))

Usage

Universal secondary-electron yield curve δ/δmax = 1.28 (E/Emax)^−0.67 [1 − exp(−1.614 (E/Emax)^1.67)].

> The detailed description below is the original text — the summary and the headings are translated.

Lin & Joy 2005(Surf. Interface Anal. 37:895)が 44 元素の実測をまとめた形。最大値は E/Emax ≈ 1 で約 1.0(式の定数のまま。正規化はしない)。e_over_emax を省くと 0.1〜30 の対数等間隔 64 点で返す(signal)。

Examples

>>> round(float(sem_se_universal_curve(1.0)), 3)

1.025

Detailed usage guide

• generative_art family guide

References (sample data, literature)

• Sample-data catalog (download URLs / licences) — 2-D uses skimage.data (BSD/public domain) plus synthetic images; 3-D lists download URLs for real data sources (Stanford, PDS, …).

• Operator provenance and references — the sources of the research/methods this op family came from.

• The canonical algorithm (author, year) and its uses are named in the family usage guide above.

Runnable examples (verified samples that actually call this op)

• poc_virtual_sem_kv_cd_bse — py -3.11 examples/poc_virtual_sem_kv_cd_bse.py

Ops the type connects to (they accept signal as input)

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Same category (sem)

sem_render · sem_electron_mc · sem_yield_curve · sem_line_profile · sem_cd_measure · sem_image · sem_se_escape_fraction · sem_charging_series

*Provenance: sem.py — GENERATIVE operator registry. This per-op note is generated by tools/opdocs.py md (do not hand-edit).*

© 2026 Kazufumi Furuse — Fullseye operator documentation. Licensed under Apache-2.0.