debye_ring_image — DRIVE `pxrd` op

• Data kinds: any × signal × table → table

• Call: import fullseye as fs; fs.ledger.debye_ring_image(phases, weight_fractions, geometry, shape=(512, 512), size=inf, K=0.9, instrumental_fwhm=0.02, counts=20000.0, background=0.03, polarization=0.0, lorentz='powder', supersample=2, lattice_scales=None, seed=0, step=0.002, eta=0.0) (to call the implementation directly, import pxrd; pxrd.debye_ring_image(phases, weight_fractions, geometry, shape=(512, 512), size=inf, K=0.9, instrumental_fwhm=0.02, counts=20000.0, background=0.03, polarization=0.0, lorentz='powder', supersample=2, lattice_scales=None, seed=0, step=0.002, eta=0.0); from the registry, opsdrive.get("debye_ring_image"))

Usage

> This operator's description has not been translated yet. The original text follows as it is.

デバイ環の 2-D 検出器像を合成する(相ごとの寄与つき)。

相 p の単位立体角あたりの強度 `∝ vₚ (1/Vₚ²) Σ m|F|² L(2θ) × 形(体積分率 vₚ ∝ Wₚ / ρₚ`)、山の幅は Scherrer

(`size [Å]、相ごとの list も可、inf = 広がりなし)と装置の FWHM(instrumental_fwhm` [deg])をガウスで足す。

画素の値 = 強度 × 偏光 `P(2θ, χ) × 相対立体角 + 平らな背景(background` × 最大の強度、これも立体角つき)。

画素は `supersample² 点の平均(画素の幅の広がりが自然に入る)。counts が数なら最大を counts` に揃えて

Poisson の雑音(`seed)、None なら雑音なし。lattice_scales` は相ごとの格子の倍率(熱膨張・固溶の模擬)。

`eta` は山の形の Lorentz の割合(pseudo-Voigt、0 = ガウス)—— 辞書と違う形で合成して、形の取り違えの効きを測るため。

返り値(dict): `image((H, W) float、数え数)・per_phase((P, H, W)、雑音なしの相ごとの寄与)・background`

((H, W))・`names・weight_fractions・volume_fractions・two_theta(画素の中心の 2θ)・geometry`。

Raises ValueError: 相と分率の数の不一致、負の分率・総和 0、幾何の不備、像が小さすぎる。

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_pxrd_phase_peel — py -3.11 examples/poc_pxrd_phase_peel.py

Ops the type connects to (they accept `table` as input)

course_layout · course_occupancy · course_contains · world_build · world_camera · world_move · lidar_scan · rss_longitudinal_same

Same category (`pxrd`)

cif_read · cubic_prototype · powder_reflections · scherrer_size · detector_two_theta · detector_calibrate · azimuthal_integrate · diffraction_peaks

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

debye_ring_image — DRIVE pxrd op