A high-throughput energy-dispersive tender X-ray spectrometer for shot-to-shot sulfur measurements
Year: 2019
Type: article
Abstract: An X-ray emission spectrometer that can detect the sulfur Kα emission lines with large throughput and a high energy resolution is presented. The instrument is based on a large d-spacing perfect Bragg analyzer that diffracts the sulfur Kα emission at close to backscattering angles. This facilitates the application of efficient concepts routinely employed in hard X-ray spectrometers towards the tender X-ray regime. The instrument described in this work is based on an energy-dispersive von Hamos geometry that is well suited for photon-in photon-out spectroscopy at X-ray free-electron laser and synchrotron sources. Comparison of its performance with previously used instrumentation is presented through measurements using sulfur-containing species performed at the LCLS. It is shown that the overall signal intensity is increased by a factor of ∼15. Implementation of this approach in the design of a tender X-ray spectroscopy endstation for LCLS-II is also discussed.
Source: Journal of Synchrotron Radiation
Authors: Baxter Abraham, Stanislaw Nowak, Clemens Weninger, Rebecca Armenta, Jim Defever, David Day, Gabriella Carini, Kazutaka Nakahara, Alessandro Gallo, Silke Nelson, Dennis Nordlund, Thomas Kroll, Mark S. Hunter, Tim van Driel, Diling Zhu, Tsu-Chien Weng, Roberto Alonso-Mori, Dimosthenis Sokaras
Language: English
Subfield: Radiation
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $3,400
Funder: Office of Science
Awards: G419881185, G495301720
OpenAlex ID: W2928006475