by Honkanen, Ari-Pekka, Verbeni, Roberto, Simonelli, Laura, Sala, Marco Moretti, Al-Zein, Ali, Krisch, Michael, Monaco, Giulio and Huotari, Simo
Abstract:
Wavelength-dispersive high-resolution X-ray spectrometers often employ elastically bent crystals for the wavelength analysis. In a preceding paper [Honkanen et al. (2014). J. Synchrotron Rad. 21, 104-110] a theory for quantifying the internal stress of a macroscopically large spherically curved analyser crystal was presented. Here the theory is applied to compensate for the corresponding decrease of the energy resolution. The technique is demonstrated with a Johann-type spectrometer using a spherically bent Si(660) analyser in near-backscattering geometry, where an improvement in the energy resolution from 1.0 eV down to 0.5 eV at 9.7 keV incident photon energy was observed.
Reference:
Improving the energy resolution of bent crystal X-ray spectrometers with position-sensitive detectors (Honkanen, Ari-Pekka, Verbeni, Roberto, Simonelli, Laura, Sala, Marco Moretti, Al-Zein, Ali, Krisch, Michael, Monaco, Giulio and Huotari, Simo), In JOURNAL OF SYNCHROTRON RADIATION, INT UNION CRYSTALLOGRAPHY, volume 21, 2014.
Bibtex Entry:
@article{ ISI:000338124300016, Author = {Honkanen, Ari-Pekka and Verbeni, Roberto and Simonelli, Laura and Sala, Marco Moretti and Al-Zein, Ali and Krisch, Michael and Monaco, Giulio and Huotari, Simo}, Title = {{Improving the energy resolution of bent crystal X-ray spectrometers with position-sensitive detectors}}, Journal = {{JOURNAL OF SYNCHROTRON RADIATION}}, Year = {{2014}}, Volume = {{21}}, Number = {{4}}, Pages = {{762-767}}, Month = {{JUL}}, Abstract = {{Wavelength-dispersive high-resolution X-ray spectrometers often employ elastically bent crystals for the wavelength analysis. In a preceding paper {[}Honkanen et al. (2014). J. Synchrotron Rad. 21, 104-110] a theory for quantifying the internal stress of a macroscopically large spherically curved analyser crystal was presented. Here the theory is applied to compensate for the corresponding decrease of the energy resolution. The technique is demonstrated with a Johann-type spectrometer using a spherically bent Si(660) analyser in near-backscattering geometry, where an improvement in the energy resolution from 1.0 eV down to 0.5 eV at 9.7 keV incident photon energy was observed.}}, Publisher = {{INT UNION CRYSTALLOGRAPHY}}, Address = {{2 ABBEY SQ, CHESTER, CH1 2HU, ENGLAND}}, Type = {{Article}}, Language = {{English}}, Affiliation = {{Honkanen, AP (Corresponding Author), Dept Phys, POB 64, FI-00014 Helsinki, Finland. Honkanen, Ari-Pekka; Huotari, Simo, Dept Phys, FI-00014 Helsinki, Finland. Verbeni, Roberto; Simonelli, Laura; Sala, Marco Moretti; Al-Zein, Ali; Krisch, Michael; Monaco, Giulio, European Synchrotron Radiat Facil, F-38043 Grenoble, France. Simonelli, Laura, CELLS ALBA, Barcelona 08290, Spain. Monaco, Giulio, Univ Trento, Dept Phys, I-38123 Povo, TN, Italy.}}, DOI = {{10.1107/S1600577514011163}}, ISSN = {{0909-0495}}, EISSN = {{1600-5775}}, Keywords = {{X-ray spectrometers; position-sensitive detectors; bent analyser crystals}}, Keywords-Plus = {{DYNAMICAL THEORY; REFLECTIVITY; DIFFRACTION; SCATTERING; EXAFS}}, Research-Areas = {{Instruments & Instrumentation; Optics; Physics}}, Web-of-Science-Categories = {{Instruments & Instrumentation; Optics; Physics, Applied}}, Author-Email = {{ari-pekka.honkanen@helsinki.fi}}, ResearcherID-Numbers = {{Sala, Marco Moretti/H-1034-2014 Krisch, Michael H/U-5662-2018 Moretti, Marco/AAF-9255-2019 Zein, Ali Al/F-4393-2019 Simonelli, Laura/I-1963-2015 Monaco, Giulio/AAW-4387-2020 }}, ORCID-Numbers = {{Sala, Marco Moretti/0000-0002-9744-9976 Krisch, Michael H/0000-0001-7423-1715 Moretti, Marco/0000-0002-9744-9976 Monaco, Giulio/0000-0003-2497-6422 Huotari, Simo/0000-0003-4506-8722 Honkanen, Ari-Pekka/0000-0002-6822-3062}}, Funding-Acknowledgement = {{Academy of FinlandAcademy of Finland {[}1256211, 1254065]; University of Helsinki {[}490076]}}, Funding-Text = {{Professor M. Haase is gratefully acknowledged for preparing the LaPO<INF>4</INF> sample, loaned to us by E. Suljoti. A-PH and SH were funded by the Academy of Finland (grants 1256211 and 1254065) and University of Helsinki research funds (grant 490076). The ESRF provided beam time.}}, Number-of-Cited-References = {{22}}, Times-Cited = {{9}}, Usage-Count-Last-180-days = {{0}}, Usage-Count-Since-2013 = {{27}}, Journal-ISO = {{J. Synchrot. Radiat.}}, Doc-Delivery-Number = {{AK0SD}}, Unique-ID = {{ISI:000338124300016}}, OA = {{Green Published, Other Gold}}, DA = {{2020-12-22}}, }
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