We report on neutron scattering studies of a rare earth intermetallic compound ErNi2Ge2. Polarized neutron scattering experiments revealed that the magnetic ordered moment m lies in ab-plane. Taking account of a lack of the third higher harmonic reflection, ErNi2Ge2 is considered to have a helical magnetic structure. The magnetic scattering profiles along the [100]∗and the [110]∗-directions are...

Neutron scattering research in the United States is poised for a spectacular leap after the Spallation Neutron Source (SNS) is commissioned in 2006. With the power of its source and the performance of its instruments, the SNS will improve measurement efficiencies by typically two orders of magnitude. Analyzing data is an essential but non-trivial step in neutron scattering research. The product...

We seek a measure of the neutron density of Pb from analyses of intermediate energy nucleon elastic scattering. The pertinent model for such analyses is based on coordinate space nonlocal optical potentials obtained from model nuclear ground state densities. Those potentials give predictions of integral observables and of angular distributions which show sensitivity to the neutron density. When...

We seek a measure of the neutron density of 208Pb from analyses of intermediate energy nucleon elastic scattering. The pertinent model for such analyses is based on coordinate space nonlocal optical potentials obtained from model nuclear ground state densities. Those potentials give predictions of integral observables and of angular distributions which show sensitivity to the neutron density. W...

Neutron spectroscopy and diffuse neutron scattering on herbertsmithite [ZnCu(3)(OH)(6)Cl(2)], a near-ideal realization of the s=1/2 kagome antiferromagnet, reveal the hallmark property of a quantum spin liquid: instantaneous short-ranged antiferromagnetic correlations in the absence of a time-averaged ordered moment. These dynamic antiferromagnetic correlations are weakly dependent of neutron-e...

The work reported in this thesis concerns, not only the synthesis of mesoporous MCM-41 materials, but also their characterisation and analysis by a number of techniques. The methods used most frequently were small angle X-ray and neutron scattering. These procedures, especially when used in conjunction, are very powerful, giving much structural information in a critical size range. Other techni...

We present a full set of procedures to evaluate the experimental corrections needed to derive physically meaningful quantities from the measured neutron intensities in inelastic neutron-scattering experiments. Multiple-scattering corrections are evaluated by means of a Monte Carlo code, in which a combination of experimental data and the Synthetic Model is used to account for neutron-molecule i...