194 citations · 656 across the 16 of their papers we have counts for
16 papers
The human factor: results of a small-angle scattering data analysis Round Robin
Brian R. Pauw, Glen J. Smales, Andy S. Anker +46
A Round Robin study has been carried out to estimate the impact of the human element in small-angle scattering data analysis. Four corrected datasets were provided to participants…
Hyperfine interaction in cobalt by high-resolution neutron spectroscopy
Tapan Chatterji, Michaela Zamponi, Joachim Wuttke
We have investigated the ferromagnetic phase transition of elemental Co by high-resolution neutron backscattering spectroscopy. We monitored the splitting of the nuclear levels by…
Form factor (Fourier shape transform) of polygon and polyhedron
Joachim Wuttke
The Fourier transform of the indicator function of arbitrary polygons and polyhedra is computed for complex wavevectors. Using the divergence theorem and Stokes' theorem, closed ex…
SPHERES, Jülich's High-Flux Neutron Backscattering Spectrometer at FRM II
Joachim Wuttke, Alfred Budwig, Matthias Drochner +10
SPHERES (SPectrometer with High Energy RESolution) is a third-generation neutron backscattering spectrometer, located at the 20 MW German neutron source FRM II and operated by the…
Spin correlations in the extended kagome system YBaCo3FeO7
Martin Valldor, Raphaël P. Hermann, Joachim Wuttke +2
The transition metal based oxide YBaCo3FeO7 is structurally related to the mineral Swedenborgite SbNaBe4O7, a polar non-centrosymmetric crystal system. The magnetic Co3Fe sublattic…
Hydrogen Release from Sodium Alanate Observed by Time-resolved Neutron Backscattering
Aline Léon, Joachim Wuttke
Innermolecular motion in Na3AlH6 gives rise to a Lorentzian spectrum with a wavenumber-independent width of about 1 micro-eV at 180 deg C, which is probably due to rotation of AlH6…
Macromolecular Dynamics. An introductory lecture
Joachim Wuttke
This lecture has the following sections: Systems and States; Brownian Motion; Segmental Relaxation and the Glass Transition; Dynamics of a Free Chain; Entanglement and Reptation. A…
The Dynamic Transition of Protein Hydration Water
W. Doster, S. Busch, A. M. Gaspar +3
Thin layers of water on biomolecular and other nanostructured surfaces can be supercooled to temperatures not accessible with bulk water. Chen et al. [PNAS 103, 9012 (2006)] sugges…
Fourier Transform of the Stretched Exponential Function: Analytic Error Bounds, Double Exponential Transform, and Open-Source Implementation libkww
Joachim Wuttke
The C library \texttt{libkww} provides functions to compute the Kohlrausch-Williams-Watts function, i.e.\ the Laplace-Fourier transform of the stretched (or compressed) exponential…
Structural Relaxation and Mode Coupling in a Simple Liquid: Depolarized Light Scattering in Benzene
Sabine Wiebel, Joachim Wuttke
We have measured depolarized light scattering in liquid benzene over the whole accessible temperature range and over four decades in frequency. Between 40 and 180 GHz we find a sus…
Brillouin Scattering Study of Propylene Carbonate: An Evaluation of Phenomenological and Mode Coupling Analyses
Alexander Brodin, Martin Frank, Sabine Wiebel +3
Brillouin scattering spectra of the molecular glassformer propylene carbonate (PC) in the temperature range 140 K to 350 K were analyzed using both the phenomenological Cole-Davids…
Calcium Rubidium Nitrate: Mode-Coupling Scaling without Factorization
M. Goldammer, C. Losert, J. Wuttke +4
The fast dynamics of viscous calcium rubidium nitrate is investigated by depolarized light scattering, neutron scattering and dielectric loss. Fast relaxation evolves as in cal…
Vibrational States of Glassy and Crystalline Orthotherphenyl
A. Toelle, H. Zimmermann, F. Fujara +4
Low-frequency vibrations of glassy and crystalline orthoterphenyl are studied by means of neutron scattering. Phonon dispersions are measured along the main axes of a single crysta…
Propylene Carbonate Reexamined: Mode-Coupling Scaling without Factorisation ?
J. Wuttke, M. Ohl, M. Goldammer +7
The dynamic susceptibility of propylene carbonate in the moderately viscous regime above is reinvestigated by incoherent neutron and depolarised light scattering, and c…
Fast relaxation in a fragile liquid under pressure
A. Toelle, H. Schober, J. Wuttke +1
The incoherent dynamic structure factor of ortho-terphenyl has been measured by neutron time-of-flight and backscattering technique in the pressure range from 0.1 MPa to 240 MPa fo…
Wavenumber dependence of structural alpha relaxation in a molecular liquid
A. Toelle, H. Schober, J. Wuttke +1
Structural alpha relaxation in liquid orthoterphenyl is studied by means of coherent neutron time-of-flight and backscattering spectroscopy over a large temperature range. Not only…