On the design of a high‐speed combined high‐resolution powder diffractometer and small‐angle scattering system with time‐resolution capability based on the use of imaging plates and CCCC monochromators

1989 ◽  
Vol 60 (7) ◽  
pp. 2537-2540 ◽  
Author(s):  
Z. Barnea ◽  
R. Clapp ◽  
D. C. Creagh ◽  
T. M. Sabine ◽  
A. W. Stevenson ◽  
...  
Author(s):  
Uwe Keiderling ◽  
Charl Jafta

V4 is a small-angle neutron scatting instrument with an accessible range of scattering vector 0.01 nm-1 < Q < 8.5 nm-1. Outstanding features of the instrument are the polarized neutron option and the list mode data acquisition, allowing for time-resolved measurements with µs time resolution.


2014 ◽  
Vol 36 (1) ◽  
pp. 44-48 ◽  
Author(s):  
David J. Scott

Protein crystallography is one of the great intellectual achievements of the 20th Century, and it continues to open up new vistas of research as scientists are able to visualize in exquisite detail the molecules of Life. It has become increasingly apparent, however, that not all proteins are amenable to crystallographic analysis. These include (but are not confined to) proteins with functional flexible segments, glycoproteins and intrinsically disordered proteins. There are also proteins that, although rigid and folded, refuse to crystallize as an entire full-length construct, and hence high-resolution information has to be pieced together domain by domain. It is into this space that small-angle scattering is increasingly being used as the technique of choice with regard to attainable structural information.


Author(s):  
Henrich Frielinghaus ◽  
Artem Feoktystov ◽  
Ida Berts ◽  
Gaetano Mangiapia

The KWS-1, which is operated by JCNS, Forschungszentrum Jülich, is a small-angle neutron scattering diffractometer dedicated to high resolution measurements.


1975 ◽  
Vol 124 (1) ◽  
pp. 49-60 ◽  
Author(s):  
D. Aebischer ◽  
B. Favier ◽  
G. Greeniaus ◽  
R. Hess ◽  
A. Junod ◽  
...  

1988 ◽  
Vol 26 (4) ◽  
pp. 745-770 ◽  
Author(s):  
Shoji Suehiro ◽  
Robert W. Hendricks ◽  
J. S. Lin ◽  
Thein Kyu ◽  
Ping Young ◽  
...  

2015 ◽  
Vol 48 (6) ◽  
pp. 1818-1826 ◽  
Author(s):  
Jesper Wallentin ◽  
Robin N. Wilke ◽  
Markus Osterhoff ◽  
Tim Salditt

Simultaneous scanning Bragg contrast and small-angle ptychographic imaging of a single solar cell nanowire are demonstrated, using a nanofocused hard X-ray beam and two detectors. The 2.5 µm-long nanowire consists of a single-crystal InP core of 190 nm diameter, coated with amorphous SiO2and polycrystalline indium tin oxide. The nanowire was selected and aligned in real space using the small-angle scattering of the 140 × 210 nm X-ray beam. The orientation of the nanowire, as observed in small-angle scattering, was used to find the correct rotation for the Bragg condition. After alignment in real space and rotation, high-resolution (50 nm step) raster scans were performed to simultaneously measure the distribution of small-angle scattering and Bragg diffraction in the nanowire. Ptychographic reconstruction of the coherent small-angle scattering was used to achieve sub-beam spatial resolution. The small-angle scattering images, which are sensitive to the shape and the electron density of all parts of the nanowire, showed a homogeneous profile along the nanowire axis except at the thicker head region. In contrast, the scanning Bragg diffraction microscopy, which probes only the single-crystal InP core, revealed bending and crystalline inhomogeneity. Both systematic and non-systematic real-space movement of the nanowire were observed as it was rotated, which would have been difficult to reveal only from the Bragg scattering. These results demonstrate the advantages of simultaneously collecting and analyzing the small-angle scattering in Bragg diffraction experiments.


Sign in / Sign up

Export Citation Format

Share Document