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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