MERIX—Next generation medium energy resolution inelastic X-ray scattering instrument at the APS

Autor: Stanislav Stoupin, Ruben Khachatryan, Michael Wieczorek, Jungho Kim, T. Roberts, C. N. Kodituwakku, Muruganathan Ramanathan, John Hill, Diego Casa, D. S. Coburn, Ayman Said, Harald Sinn, H. Yavas, B. Brajuskovic, Kurt Goetze, Mary Upton, Yu. V. Shvyd'ko, Thomas Gog, Deming Shu, Clement Burns

Publikováno v: Journal of Electron Spectroscopy and Related Phenomena. 188:140-149

MERIX (Medium Energy Resolution Inelastic X-ray Scattering) is an instrument for Resonant Inelastic X-ray Scattering (RIXS) studies, in the hard X-ray regime, designed to work with photons in the 5–12 keV range, spanning atomic resonances near the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9099ca5e8d41118829602473ef339c4a
https://doi.org/10.1016/j.elspec.2012.09.003

Signature of a polyamorphic transition in the THz spectrum of vitreous GeO2

Autor: Filippo Bencivenga, Ho-kwang Mao, Roberto Verbeni, Shibing Wang, Daniele Antonangeli, Yong Q. Cai, C. N. Kodituwakku, Alfred Q. R. Baron, Satoshi Tsutsui, Yan Li, Andrea Battistoni, Alessandro Cunsolo, Dima Bolmatov

Publikováno v: Scientific Reports
'Scientific Reports ', vol: 5, pages: 14996-1-14996-9 (2015)
Scientific Reports, 2015, 5, pp.2015. ⟨10.1038/srep14996⟩
Scientific Reports, Nature Publishing Group, 2015, 5, pp.2015. ⟨10.1038/srep14996⟩

The THz spectrum of density fluctuations, $S(Q, \omega)$, of vitreous GeO$_2$ at ambient temperature was measured by inelastic x-ray scattering from ambient pressure up to pressures well beyond that of the known $\alpha$-quartz to rutile polyamorphic

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7d9b381e227d586e691766a5b6636e84

Transverse dynamics of water across the melting point: A parallel neutron and x-ray inelastic scattering study

Autor: Matthias Frontzek, C. N. Kodituwakku, Filippo Bencivenga, Alessandro Cunsolo, Bogdan M. Leu, Ayman Said

Publikováno v: Physical Review B. 85

Joint inelastic neutron and x-ray scattering measurements have been performed on heavy water across the melting point. The spectra bear clear evidence of low- and high-frequency inelastic shoulders related to transverse and longitudinal modes, respec

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::be7531384fdc21cfa0a9e37558736726
https://doi.org/10.1103/physrevb.85.174305

Dynamical modeling of high-energy-resolution x-ray optics

Autor: Yuri P. Stetsko, C. N. Kodituwakku, Yong Q. Cai, Alexey Suvorov, Alessandro Cunsolo, Jeffrey W. Keister, D. Scott Coburn

Publikováno v: SPIE Proceedings.

Theoretical analysis of high-energy-resolution x-ray optics, such as backscattering 1-3 and four-bounce 4-5 monochromators and analyzers, has been carried out using computer modeling within the framework of the dynamical theory of x-ray diffraction.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0817b19833611d4d5db5269eabdfb369
https://doi.org/10.1117/12.892820

Torsional Oscillator and Synchrotron X-Ray Experiments on SolidHe4in Aerogel

Autor: M. H. W. Chan, Norbert Mulders, Clement Burns, J. T. West, C. N. Kodituwakku, Laurence Lurio

Publikováno v: Physical Review Letters. 101

X-ray diffraction experiments show that solid $^{4}\mathrm{He}$ grown in aerogel is highly polycrystalline, with an hcp crystal structure (as in bulk) and a crystallite size of approximately 100 nm. In contrast to the expectation that the highly diso

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c4bf4f747bebcb7d47e7e1a33ba3c434
https://doi.org/10.1103/physrevlett.101.165303