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Alexander S. Ditter
Researcher at University of Washington
Publications - 18
Citations - 305
Alexander S. Ditter is an academic researcher from University of Washington. The author has contributed to research in topics: Spectrometer & Synchrotron. The author has an hindex of 11, co-authored 16 publications receiving 251 citations. Previous affiliations of Alexander S. Ditter include Los Alamos National Laboratory.
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Journal ArticleDOI
An improved laboratory-based x-ray absorption fine structure and x-ray emission spectrometer for analytical applications in materials chemistry research
Evan P. Jahrman,William M. Holden,Alexander S. Ditter,Devon R. Mortensen,Gerald T. Seidler,Timothy T. Fister,Stosh A. Kozimor,Louis F. J. Piper,Jatinkumar Rana,Neil C. Hyatt,Martin C. Stennett +10 more
TL;DR: The design and performance of an improved XAFS and XES spectrometer based on the general conceptual design of Seidler et al. are reported, which enables a new class of routine applications that are incompatible with the mission and access model of the synchrotron light sources.
Journal ArticleDOI
The coordination chemistry of CmIII, AmIII, and AcIII in nitrate solutions: an actinide L3-edge EXAFS study
Maryline G. Ferrier,Benjamin W. Stein,Sharon E. Bone,Samantha K. Cary,Alexander S. Ditter,Alexander S. Ditter,Stosh A. Kozimor,Juan S. Lezama Pacheco,Veronika Mocko,Gerald T. Seidler +9 more
TL;DR: CmIII, AmIII, and AcIII have been characterized by solution L3-edge X-ray absorption spectroscopy as a function of nitric acid concentration and this enabled the first experimental determination of Cm and Ac nitrate distances.
Journal ArticleDOI
A Compact Dispersive Refocusing Rowland Circle X-ray Emission Spectrometer for Laboratory, Synchrotron, and XFEL Applications
William M. Holden,Oliver Hoidn,Alexander S. Ditter,Gerald T. Seidler,Joshua J. Kas,Jennifer L. Stein,Brandi M. Cossairt,Stosh A. Kozimor,Jinghua Guo,Yifan Ye,Matthew A. Marcus,Sirine C. Fakra +11 more
TL;DR: In this article, the authors present details of the design and performance of a compact x-ray emission spectrometer that uses a dispersive refocusing Rowland (DRR) circle geometry to achieve excellent performance for the 2 - 2.5 keV energy range.
Journal ArticleDOI
A compact dispersive refocusing Rowland circle X-ray emission spectrometer for laboratory, synchrotron, and XFEL applications
William M. Holden,Oliver Hoidn,Alexander S. Ditter,Gerald T. Seidler,Joshua J. Kas,Jennifer L. Stein,Brandi M. Cossairt,Stosh A. Kozimor,Jinghua Guo,Yifan Ye,Matthew A. Marcus,Sirine C. Fakra +11 more
TL;DR: Details are presented of the design and performance of a compact x-ray emission spectrometer that uses a dispersive refocusing Rowland (DRR) circle geometry to achieve excellent performance for the 2-2.5 keV range, especially for the K-edge emission from sulfur and phosphorous.
Journal ArticleDOI
Vacuum formed temporary spherically and toroidally bent crystal analyzers for x-ray absorption and x-ray emission spectroscopy.
Evan P. Jahrman,William M. Holden,Alexander S. Ditter,Stosh A. Kozimor,Scott L. Kihara,Gerald T. Seidler +5 more
TL;DR: It is demonstrated that vacuum forming of 10-cm diameter silicon wafers of various crystallographic orientations under an x-ray permeable, flexible window can easily generate spherically bent crystal analyzezers and toroidally bent crystal analyzers with ∼1-eV energy resolution and a 1-m major radius of curvature.