Sökning: WFRF:(Ayyer Kartik) >
Photon statistics a...
Photon statistics and signal to noise ratio for incoherent diffraction imaging
-
- Trost, Fabian (författare)
- Deutsch Elektronen Synchrotron DESY, Ctr Free Electron Laser Sci, Notkestr 85, D-22607 Hamburg, Germany.
-
- Ayyer, Kartik (författare)
- Max Planck Inst Struct & Dynam Matter, Luruper Chaussee 149, D-22761 Hamburg, Germany.;Ctr Free Electron Laser Sci, Luruper Chaussee 149, D-22761 Hamburg, Germany.;Univ Hamburg, Hamburg Ctr Ultrafast Imaging, Luruper Chaussee 149, D-22761 Hamburg, Germany.
-
- Chapman, Henry (författare)
- Uppsala universitet,Molekyl- och kondenserade materiens fysik,Deutsch Elektronen Synchrotron DESY, Ctr Free Electron Laser Sci, Notkestr 85, D-22607 Hamburg, Germany.;Univ Hamburg, Hamburg Ctr Ultrafast Imaging, Luruper Chaussee 149, D-22761 Hamburg, Germany.;Univ Hamburg, Dept Phys, Luruper Chaussee 149, Hamburg, Germany.
-
Deutsch Elektronen Synchrotron DESY, Ctr Free Electron Laser Sci, Notkestr 85, D-22607 Hamburg, Germany Max Planck Inst Struct & Dynam Matter, Luruper Chaussee 149, D-22761 Hamburg, Germany.;Ctr Free Electron Laser Sci, Luruper Chaussee 149, D-22761 Hamburg, Germany.;Univ Hamburg, Hamburg Ctr Ultrafast Imaging, Luruper Chaussee 149, D-22761 Hamburg, Germany. (creator_code:org_t)
- 2020-08-24
- 2020
- Engelska.
-
Ingår i: New Journal of Physics. - : IOP Publishing. - 1367-2630. ; 22:8
- Relaterad länk:
-
https://doi.org/10.1...
-
visa fler...
-
https://urn.kb.se/re...
-
https://doi.org/10.1...
-
visa färre...
Abstract
Ämnesord
Stäng
- Intensity interferometry is a well known method in astronomy. Recently, a related method called incoherent diffractive imaging (IDI) was proposed to apply intensity correlations of x-ray fluorescence radiation to determine the 3D arrangement of the emitting atoms in a sample. Here we discuss inherent sources of noise affecting IDI and derive a model to estimate the dependence of the signal to noise ratio (SNR) on the photon counts per pixel, the temporal coherence (or number of modes), and the shape of the imaged object. Simulations in two- and three-dimensions have been performed to validate the predictions of the model. We find that contrary to coherent imaging methods, higher intensities and higher detected counts do not always correspond to a larger SNR. Also, larger and more complex objects generally yield a poorer SNR despite the higher measured counts. The framework developed here should be a valuable guide to future experimental design.
Ämnesord
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
Nyckelord
- incoherent diffractive imaging
- SNR analysis for IDI
- intensity correlation imaging
- x-ray free-electron laser
- Hanbury-Brown and Twiss
- coherence
- x-ray imaging
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
Hitta via bibliotek
Till lärosätets databas