Abstract
Grazing Incidence Neutron Spin Echo Spectroscopy (GINSES) opens new possibilities for observing the thermally driven dynamics of macromolecules close to a rigid interface. The information about the dynamics can be retrieved as a function of scattering depth of the evanescent neutron wave, on the length scale in the range of some 10-100 nm. Using a classical neutron spin echo spectrometer with a laterally collimated beam, dynamics can be measured in grazing incidence geometry. We show examples of how the interface modifies the dynamics of microemulsions, membranes and microgels. Instrumental details and possible improvements for this technique will be presented. The key issue is the low intensity for dynamics measurements with an evanescent neutron wave. Conceptual questions how a specialised instrument could improve the experimental technique will be discussed.
Highlights
Small angle neutron scattering under grazing incidence conditions (GISANS) allows to study structural features close to a rigid interface [1][2]
Grazing incidence neutron spin echo spectroscopy: instrumentation aspects and scientific opportunities. This content has been downloaded from IOPscience
An optimized neutron beam transport and sample environment would allow to increase the intensity at the sample by a factor of about 5 compared to the situation at current Neutron Spin Echo (NSE) instruments which would allow to study a wider class of samples
Summary
Grazing incidence neutron spin echo spectroscopy: instrumentation aspects and scientific opportunities. This content has been downloaded from IOPscience. Please scroll down to see the full text. Ser. 528 012025 (http://iopscience.iop.org/1742-6596/528/1/012025) View the table of contents for this issue, or go to the journal homepage for more. Download details: IP Address: 134.94.122.242 This content was downloaded on 29/07/2014 at 09:59 Please note that terms and conditions apply
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