| Literature DB >> 32381786 |
Mauro Rovezzi1, Alistair Harris2, Blanka Detlefs3, Timothy Bohdan3, Artem Svyazhin3, Alessandro Santambrogio3, David Degler3, Rafal Baran3, Benjamin Reynier3, Pedro Noguera Crespo4, Catherine Heyman2, Hans Peter Van Der Kleij3, Pierre Van Vaerenbergh3, Philippe Marion3, Hugo Vitoux3, Christophe Lapras3, Roberto Verbeni3, Menhard Menyhert Kocsis3, Alain Manceau5, Pieter Glatzel3.
Abstract
The design and first results of a large-solid-angle X-ray emission spectrometer that is optimized for energies between 1.5 keV and 5.5 keV are presented. The spectrometer is based on an array of 11 cylindrically bent Johansson crystal analyzers arranged in a non-dispersive Rowland circle geometry. The smallest achievable energy bandwidth is smaller than the core hole lifetime broadening of the absorption edges in this energy range. Energy scanning is achieved using an innovative design, maintaining the Rowland circle conditions for all crystals with only four motor motions. The entire spectrometer is encased in a high-vacuum chamber that allocates a liquid helium cryostat and provides sufficient space for in situ cells and operando catalysis reactors.Entities:
Keywords: Johansson crystal analyzers; X-ray instrumentation; X-ray optics; tender X-rays; wavelength dispersive spectrometer
Year: 2020 PMID： 32381786 PMCID： PMC7285681 DOI： 10.1107/S160057752000243X
Source DB: PubMed Journal: J Synchrotron Radiat ISSN： 0909-0495 Impact factor: 2.616