Single crystal diffuse scattering was collected on the Wombat high-intensity powder diffractometer at the OPAL reactor at the Bragg Institute. The difficulty in measuring diffuse scattering comes from its relatively low intensity compared to the Bragg peaks, a factor of 10−10 smaller. Wombat allows collection of diffuse scattering due to its high intensity and large two-dimensional detector. Di...

Ultra small angle neutron scattering (USANS) and SANS measurements, covering length scales from nanometers to micrometers, were made to investigate the structure of monolithic porous Vycor. USANS from dry Vycor showed strong very low angle scattering below scattering vector q = 0.001 Å 1 while SANS showed the typical inter-pore correlation peak at q = 0.023 Å . When the sample was saturated wit...

The intermediate valence compound YbAl3 exhibits a broad magnetic excitation in the inelastic neutron scattering spectrum with characteristic energy E1 approximately 50 meV, equal to the Kondo energy (T(K) approximately 600-700 K). In the low temperature (T < T(coh) approximately 40 K) Fermi liquid state, however, a new peak in the scattering occurs at E2 approximately 33 meV, which lies in the...

The application of neutron scattering to biological systems using the new neutron source in Munich is discussed. Structural as well as dynamical studies of biomolecules with a variety of spectrometers, diffractometers and reflectometers are explained.

Fast Proton Hopping Detection in Ice Ih by Quasi-Elastic Neutron Scattering Itay Presiado, Jyotsana Lal, Eugene Mamontov, Alexander I. Kolesnikov, and Dan Huppert* Raymond and Beverly Sackler Faculty of Exact Sciences, School of Chemistry, Tel Aviv University, Tel Aviv 69978, Israel Materials Science Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439, United ...

The lattice and molecular dynamics for the solid phases of the lowest melting-point metal, Li(NH3)4, are determined by incoherent inelastic neutron scattering. Measurements of internal molecular displacements and distortions of the Li(NH3)4 units have been modelled and assigned using density functional theory calculations for the solid and molecular system. Inelastic neutron scattering measurem...

Light halo nuclei are exotic and weakly-bound systems that have attracted much interest during the past decades [1]. In particular neutron-rich nuclei near the dripline provide a new path for studying nuclear matter and correlations at low densities. In these nuclei, the halo is often formed by one or several loosely attached (valence) neutrons with binding energies of less than 1 MeV and with ...

The gigantic reduction of the electric resistivity under the applied magnetic field, CMR effect, is now widely accepted to appear in the vicinity of the insulator to metal transition of the perovskite manganites. Recently, we have discovered the first order transition from ferromagnetic metal to insulator in La0.88Sr0.12MnO3 of the CMR manganite. This phase transition induces the tremendous inc...

The presence and effect of water on calcium carbonate nanoparticles used in engine additives, stabilized with a sulfonate surfactant, is investigated using small-angle neutron scattering, dynamic light scattering, Fourier transform infrared spectroscopy, and rheometry. These techniques provide complementary data that suggests the formation of a layer of water around the core of the particles en...