powder_reflections — DRIVE `pxrd` op

• Data kinds: table × scalar → table

• Call: import fullseye as fs; fs.ledger.powder_reflections(phase, wavelength, two_theta_max=90.0, lorentz='powder', lattice_scale=1.0, include_extinct=False, rel_cutoff=1e-10) (to call the implementation directly, import pxrd; pxrd.powder_reflections(phase, wavelength, two_theta_max=90.0, lorentz='powder', lattice_scale=1.0, include_extinct=False, rel_cutoff=1e-10); from the registry, opsdrive.get("powder_reflections"))

Usage

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

相の粉末反射の一覧: 面間隔 d、Bragg の 2θ、多重度、|F|²、強度(Lorentz 因子つき、偏光なし)。

全ての (h, k, l) を `2θ <= two_theta_max` まで列挙し、構造因子

`F = Σ occ f₀(s) exp(−B s²) exp(2πi h·x)` を計算して、同じ d・同じ |F|² の反射を 1 本にまとめる(多重度 m)。

粉末では同じ d の反射は区別できないので、d が同じで |F|² の違う族(立方晶の 333 と 511 など)は別の行のまま同じ 2θ に並ぶ。

`lattice_scale は格子定数を全部その倍率にする(熱膨張・固溶の模擬。:func:phase_fractions` の格子の追い込みが使う)。

`include_extinct=True で |F|² が最大の rel_cutoff 倍未満の(消滅した)反射も残す(extinct=True` の印つき)。

強度 = `m |F|² L(2θ)(lorentz: "powder" = 1/(sin² θ cos θ)、"none"`)。偏光は

:func:azimuthal_integrate が割り戻す前提で入れない。

返り値(dict): `hkl(代表、(n, 3) int)・d [Å]・two_theta [deg]・multiplicity・F2・intensity`・

`extinct(bool)、2θ の昇順。name・volume・density` も写す。

Raises ValueError: 相の形でない、波長が非正、`two_theta_max` が (0, 180) の外、Lorentz の綴り違い。

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 · scherrer_size · debye_ring_image · 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).*

powder_reflections — DRIVE pxrd op