Journal Article

PUBDB-2025-03898

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Ultimate sensitivity in X-ray diffraction: angular moments versus shot noise

Modregger, P.Extern* ; Wittwer, F. ; Khaliq, A. ; Pyrlik, N.Extern*DESY* ; Ball, J. A. D. ; Garrevoet, J.DESY* ; Falkenberg, G.DESY* ; Liehr, A. ; Stuckelberger, M.XFEL.EU*DESY*

2025
Munksgaard Copenhagen

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Please use a persistent id in citations: doi:10.1107/S1600576725006715

Report No.: arXiv:2502.17977

Abstract: The sensitivity of x-ray diffraction experiments towards Bragg peak parameters constitutes a crucial performance attribute of experimental setups. Frequently, diffraction peaks are characterized by model-free angular moment analysis, which offers a greater versatility compared to traditional model-based peak fitting. Here, we have determined the ultimate sensitivity of angular moments for diffraction data that is limited by photon shot noise. We report experimentally achieved sensitivities of the first moment below $1/1000$th of a detector pixel and below $1\mu$rad. We have demonstrated the validity of our theoretical predictions by an excellent agreement with experimental results from three different setups. The provided formulas for the uncertainties of angular moments allow for the rapid determination of experimentally achieved sensitivities from single diffraction frames.

Note: Es fehlt die Genehmigung!!!

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Contributing Institute(s):

1. FS-PETRA (FS-PETRA)
2. DOOR-User (DOOR ; HAS-User)
3. externe Institute im Bereich Photon Science (USiegen)

Research Program(s):

1. 632 - Materials – Quantum, Complex and Functional Materials (POF4-632) (POF4-632)
2. 6G3 - PETRA III (DESY) (POF4-6G3) (POF4-6G3)
3. 05K22PS2 - Schnelle Röntgennanodiffraktion (BMBF-05K22PS2) (BMBF-05K22PS2)
4. FS-Proposal: I-20231255 (I-20231255) (I-20231255)

Experiment(s):

1. PETRA Beamline P06 (PETRA III)

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Database coverage:
; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; DEAL Wiley ; Ebsco Academic Search ; Essential Science Indicators ; IF >= 5 ; JCR ; Nationallizenz ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Preprint Modregger, P. (Corresponding author)Extern* ; Wittwer, F.XFEL.EU*DESY* ; Khaliq, A.Extern* ; Pyrlik, N.Extern*DESY* ; Ball, J. A. D.Extern* ; Garrevoet, J.DESY* ; Falkenberg, G.DESY* ; Liehr, A.Extern* ; Stuckelberger, M.XFEL.EU*DESY*
Ultimate Sensitivity in X-ray Diffraction: Angular Moments vs. Shot Noise
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