Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Larc Tröger"'
Autor:
Larc Tröger, Christian Reckleben, Peter Kappen, Bjerne S. Clausen, Jan-Dierk Grunwaldt, Karsten Hansen, Gerhard Materlik
Publikováno v:
Journal of Synchrotron Radiation. 9:246-253
A silicon drift detector (SDD) was used for ex situ and time-resolved in situ fluorescence X-ray absorption fine structure (XAFS) on low-concentrated catalyst samples. For a single-element and a seven-element SDD the energy resolution and the peak-to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cd6ff93cf4c0e3ef4486f3b6df1a2248
https://doi.org/10.1107/s0909049502005654
https://doi.org/10.1107/s0909049502005654
Autor:
Lothar Strüder, Larc Tröger, Peter Kappen, Karsten Hansen, Gerhard Materlik, Peter Lechner, Ch. Reckleben
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. :1163-1166
Spatially resolved spectroscopic measurements with a 10 and 20 μm pencil beam have been performed on a monolithic 7-element Silicon-Drift-Detector (SDD). Detailed studies are shown of the modification of the spectroscopic response at pixel edges and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::856618a0523227aceac63350de68fbea
https://doi.org/10.1016/s0168-9002(01)00586-1
https://doi.org/10.1016/s0168-9002(01)00586-1
Publikováno v:
Journal of Synchrotron Radiation. 8:105-109
Experimental data are presented which demonstrate the existence of a fine structure in extended X-ray absorption spectra due to interference effects in the initial photon state (πXAFS). Interference occurs between the incident electromagnetic wave a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::13bc9f93bcf21407b4ac87cc6cfd90d9
https://doi.org/10.1107/s0909049501000590
https://doi.org/10.1107/s0909049501000590
Publikováno v:
Journal of Catalysis. 198:56-65
The state of the copper promoter (0.17–1.5 wt%) was studied in Fe–Cr-based high-temperature shift (HTS) catalysts by in situ fluorescence XAFS combined with on-line gas analysis. The XANES spectra acquired in the fluorescence mode showed that Cu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3d206ef93d027f1d7a9b949bb290811d
https://doi.org/10.1006/jcat.2000.3071
https://doi.org/10.1006/jcat.2000.3071
Publikováno v:
Synchrotron Radiation News. 10:11-17
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c6e575e28d65c3cb846ebb8e269b08ae
https://doi.org/10.1080/08940889708260920
https://doi.org/10.1080/08940889708260920
Publikováno v:
Berichte der Bunsengesellschaft für physikalische Chemie. 101:851-858
Metal-metal interactions were studied on high performance Pt-Co-Cr catalysts used in commercial phosphoric acid fuel cell power plants by means of X-ray absorption fine-structure spectroscopy (XAFS), X-ray photoelectron spectroscopy (XPS) and seconda
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8b8f06ea4a5e92124f7c4ad66b6928bb
https://doi.org/10.1002/bbpc.19971010512
https://doi.org/10.1002/bbpc.19971010512
Publikováno v:
Le Journal de Physique IV. 7:C2-323
Differential scanning calorimetry (DSC) is a well-established method to study energetic changes in solid or liquid samples with high accuracy. We combined is situ XAFS in transmission mode (QEXAFS) with DSC. This allows to simultaneously monitor loca
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::32d1fcd071920763e70e2b6079c4f06c
https://doi.org/10.1051/jp4/1997212
https://doi.org/10.1051/jp4/1997212
Publikováno v:
Journal of Non-Crystalline Solids. 210:275-286
A commonly used expression for modeling the XAFS of highly disordered systems is shown to generate substantial systematic errors in the coordination number in many cases of practical interest. This expression is corrected and generalized. Further, a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::11c5b1354aec9c30a70ff19e1d751ccf
https://doi.org/10.1016/s0022-3093(96)00577-7
https://doi.org/10.1016/s0022-3093(96)00577-7
Publikováno v:
Journal of Synchrotron Radiation. 8:539-541
The thermal expansion behaviour of silver fcc has been described by an anharmonic Einstein model using EXAFS data in the temperature range between 10 and 300 K. The linear expansion coefficient of a bulk silver foil agrees well with X-ray diffraction
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a49341977bc1292563a1932bfc6598c3
https://doi.org/10.1107/s0909049500016666
https://doi.org/10.1107/s0909049500016666
Publikováno v:
Journal of Applied Physics. 72:4816-4819
The deposition of an intermediate buffer of praseodymium oxide (PrO2) of only monolayer thickness (about 2 A) in a two‐temperature process results in the growth of almost exclusive epitaxial a‐axis oriented YBa2Cu3O7 (YBCO) on LaAlO3 (100). Under
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d511bd52c19e71008cc8985630288eae
https://doi.org/10.1063/1.352096
https://doi.org/10.1063/1.352096