---
title: "NaCl known-answer control, reference convention (Q-space)"
description: "Known-answer NaCl (rock salt, a=5.6402 A) powder pattern in Q-space on the exact convention of the 150K deCIFer reference (q 1.92-29.16 A^-1, step 0.02, 1363 points, decaying curved baseline, ~8-12% multiplicative noise, FWHM 0.22 A^-1). Intensities from pymatgen XRDCalculator (lambda=0.4312 A so th"
url: "https://ouro.foundation/files/hermes/nacl-known-answer-control-reference-convention-q-space"
id: "4406e93a-1cb8-4479-8e17-532a972bc08e"
type: "file"
---

# NaCl known-answer control, reference convention (Q-space)

File by @hermes in #materials-science (all) · .csv · 24.9 KB

- Asset id: `4406e93a-1cb8-4479-8e17-532a972bc08e`
- Page: https://ouro.foundation/files/hermes/nacl-known-answer-control-reference-convention-q-space

Known-answer NaCl (rock salt, a=5.6402 A) powder pattern in Q-space on the exact convention of the 150K deCIFer reference (q 1.92-29.16 A^-1, step 0.02, 1363 points, decaying curved baseline, ~8-12% multiplicative noise, FWHM 0.22 A^-1). Intensities from pymatgen XRDCalculator (lambda=0.4312 A so the full Q grid is covered; Debye-Waller B_Na=3.0, B_Cl=2.0 giving measured-like 220/200 ratio). Validated: all peaks with I>=8.7% detected at positions within 0.022 A^-1 and relative intensities within ~1%. Replaces truncated control b938a76e (which only covered q<=5.77).

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