Performance of Multilayer Monochromators for Hard X-Ray Imaging with Coherent Synchrotron Radiation

Journal Article · Fri Sep 09 00:00:00 EDT 2011 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3625308· OSTI ID:21608315

Dietsch, R; Holz, T; Kraemer, M; Weissbach, D ^[1]; Rack, A; Weitkamp, T; Morawe, Ch; Cloetens, P; Ziegler, E ^[2]; Riotte, M; Rack, T ^[3]; Siewert, F ^[4]; Meduna, M ^[5]

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1. AXO DRESDEN GmbH, Winterbergstr. 28, 01277 Dresden (Germany)
2. European Synchrotron Radiation Facility, BP 220, 38043 Grenoble (France)
3. Karlsruhe Institute of Technology - ANKA, Pf. 3640, 76021 Karlsruhe (Germany)
4. Helmholtz Zentrum Berlin/BESSY-II, Albert-Einstein-Str. 1, 12489 Berlin (Germany)
5. Masaryk University, Kotlarska 267/2, 61137 Brno (Czech Republic)

We present a study in which multilayers of different periodicity (from 2.5 to 5.5 nm), composition (W/Si, Mo/Si, Pd/B{sub 4}C, Ru/B{sub 4}C), and numbers of layers have been compared. Particularly, we chose mirrors with similar intrinsic quality (roughness and reflectivity) to study their performance (flatness and coherence of the outgoing beam) as monochromators in synchrotron radiography. The results indicate that material composition is the dominating factor for the performance. This is important to consider for future developments in synchrotron-based hard x-ray imaging methods. In these techniques, multilayer monochromators are popular because of their good tradeoff between spectral bandwidth and photon flux density of the outgoing beam, but sufficient homogeneity and preservation of the coherent properties of the reflected beam are major concerns. The experimental results we collected may help scientists and engineers specify multilayer monochromators and can contribute to better exploitation of the advantages of multilayer monochromators in microtomography and other full-field imaging techniques.

• OSTI ID: 21608315
• Journal Information: AIP Conference Proceedings, Vol. 1365, Issue 1; Conference: 10. international conference on X-ray microscopy, Chicago, IL (United States), 15-20 Aug 2010; Other Information: DOI: 10.1063/1.3625308; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
BORON CARBIDES
FLUX DENSITY
HARD X RADIATION
LAYERS
MIRRORS
MONOCHROMATORS
PERFORMANCE
PERIODICITY
PHOTON BEAMS
PHOTONS
REFLECTIVITY
ROUGHNESS
SYNCHROTRON RADIATION
SYNCHROTRONS
TOMOGRAPHY
ACCELERATORS
BEAMS
BORON COMPOUNDS
BOSONS
BREMSSTRAHLUNG
CARBIDES
CARBON COMPOUNDS
CYCLIC ACCELERATORS
DIAGNOSTIC TECHNIQUES
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
IONIZING RADIATIONS
MASSLESS PARTICLES
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
RADIATIONS
SURFACE PROPERTIES
VARIATIONS
X RADIATION