Modeling and small-angle neutron scattering spectra of chromatin supernucleosomal structures at genome scale

2011 ◽  
Vol 110 (10) ◽  
pp. 102217 ◽  
Author(s):  
Andrey V. Ilatovskiy ◽  
Dmitry V. Lebedev ◽  
Michael V. Filatov ◽  
Mikhail Grigoriev ◽  
Michael G. Petukhov ◽  
...  
Keyword(s):  
Neutron Scattering ◽  
Small Angle ◽  
Small Angle Neutron Scattering ◽  
Scattering Spectra ◽  
Genome Scale

Butterfly Patterns: an Anomaly Common to the Neutron Scattering Spectra of Elongated Rubbers, Melts and Gels:

1991 ◽  
Vol 248 ◽  
Author(s):  
J. Bastide ◽  
F. Boue ◽  
R. Oeser ◽  
E. Mendes ◽  
F. Zielinski ◽  
...  
Keyword(s):  
Neutron Scattering ◽  
Small Angle ◽  
Small Proportion ◽  
Small Angle Neutron Scattering ◽  
Scattered Intensity ◽  
Extension Ratio ◽  
Scattering Spectra ◽  
First Time ◽  
Direction Opposite ◽  
Q Values

AbstractA totally unexpected phenomenon has been observed for the first time a few years ago when studying, by small angle neutron scattering, rubbery networks containing a small proportion of uncrosslinked labelled (deuterated) chains [1].When such a system is elongated, the scattered intensity strongly increases with the extension ratio λ for q vectors parallel to the stretching direction (and for low q values). Conversely, in the direction perpendicular to the elongation axis, the scattered intensity slightly decreases at low q for small extension ratios and then remains approximately constant when λ is further increased. The changes which are observed occur therefore in a direction opposite to the “conventional” one, i.e. that corresponding to chains effectively linked by at least two chemical junctions to the network and thus oriented on an average along the direction of stretching.

Microstructure of a Slag-Cement Paste Determined by Small-Angle Neutron Scattering

1997 ◽  
Vol 506 ◽  
Author(s):  
L.P. Aldridge ◽  
W.K. Bertram ◽  
T.M. Sabine ◽  
A Ioffe
Keyword(s):  
Neutron Scattering ◽  
Multiple Scattering ◽  
Cement Paste ◽  
Small Angle ◽  
Small Angle Neutron Scattering ◽  
Granulated Blast Furnace Slag ◽  
Scattering Spectra ◽  
Average Size ◽  
Furnace Slag

ABSTRACTSmall angle neutron scattering from hydrating cement paste was compared to that from a paste made of a blend of cement and ground granulated blast furnace slag. The scattering measurements were used to determine the average size of the scattering particles during hydration. Their rate of growth was monitored in-situ over the first 40 hours of hydration. There was little difference in the scattering spectra, showing that the scattering particles in paste containing slag blend or cement were of similar size. At the beginning of hydration the particle radii were about 250 nn and after 14 days they had grown to over 600nm.Estimates of particle sizes are critically dependent on the amount of multiple scattering. Therefore the amount of multiple scattering of the sample must be taken into account before making comparisons between the sizes of particles of different matrices.

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