Advanced X-ray polarimeter design for nuclear resonant scattering

This work presents the improvements in the design and testing of polarimeters based on channel-cut crystals for nuclear resonant scattering experiments at the 14.4 keV resonance of (57)Fe. By using four asymmetric reflections at asymmetry angles of α(1) = −28°, α(2) = 28°, α(3) = −28° and α(4) = 28°...

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Detalles Bibliográficos
Autores principales: Marx-Glowna, Berit, Uschmann, Ingo, Schulze, Kai S., Marschner, Heike, Wille, Hans-Christian, Schlage, Kai, Stöhlker, Thomas, Röhlsberger, Ralf, Paulus, Gerhard G.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: International Union of Crystallography 2021
Materias:
Research Papers
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7842219/
https://www.ncbi.nlm.nih.gov/pubmed/33399560
http://dx.doi.org/10.1107/S1600577520015295
Descripción
Sumario:This work presents the improvements in the design and testing of polarimeters based on channel-cut crystals for nuclear resonant scattering experiments at the 14.4 keV resonance of (57)Fe. By using four asymmetric reflections at asymmetry angles of α(1) = −28°, α(2) = 28°, α(3) = −28° and α(4) = 28°, the degree of polarization purity could be improved to 2.2 × 10(−9). For users, an advanced polarimeter without beam offset is now available at beamline P01 of the storage ring PETRA III.

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