Structural and dynamic single chain behaviour in a binary blend of low molecular mass poly(siloxanes) as studied by small angle neutron scattering and neutron spin echo spectroscopy

2004 ◽  
Vol 282 (8) ◽  
pp. 782-792
Author(s):  
Bernd Ewen ◽  
Heide G�tz ◽  
Ulrich Maschke
Keyword(s):  
Neutron Scattering ◽  
Molecular Mass ◽  
Small Angle ◽  
Small Angle Neutron Scattering ◽  
Spin Echo ◽  
Neutron Spin ◽  
Single Chain ◽  
Binary Blend ◽  
Neutron Spin Echo

scholarly journals Inner structure and dynamics of microgels with low and medium crosslinker content prepared via surfactant-free precipitation polymerization and continuous monomer feeding approach

Soft Matter ◽  
2019 ◽  
Vol 15 (32) ◽  
pp. 6536-6546 ◽  
Author(s):  
Tetyana Kyrey ◽  
Judith Witte ◽  
Artem Feoktystov ◽  
Vitaliy Pipich ◽  
Baohu Wu ◽  
...  
Keyword(s):  
Neutron Scattering ◽  
Small Angle ◽  
Small Angle Neutron Scattering ◽  
Spin Echo ◽  
Polymer Network ◽  
Precipitation Polymerization ◽  
Neutron Spin ◽  
Neutron Spin Echo ◽  
Structure And Dynamics ◽  
Crosslinker Content

Structure and dynamics of polymer network in microgels prepared via different polymerization routes is studied with small angle neutron scattering and neutron spin echo spectroscopy and compared for the cases of low and medium crosslinker content.

scholarly journals 2P245 Study of raft-model liposome using small-angle neutron scattering and neutron spin echo

2005 ◽  
Vol 45 (supplement) ◽  
pp. S181
Author(s):  
M. Hirai ◽  
M. Koizumi ◽  
H. Hirai ◽  
K. Kasahara ◽  
K. Yuyama ◽  
...  
Keyword(s):  
Neutron Scattering ◽  
Small Angle ◽  
Small Angle Neutron Scattering ◽  
Spin Echo ◽  
Neutron Spin ◽  
Neutron Spin Echo

Spin echo modulated small-angle neutron scattering using superconducting magnetic Wollaston prisms

2016 ◽  
Vol 49 (1) ◽  
pp. 55-63 ◽  
Author(s):  
Fankang Li ◽  
Steven R. Parnell ◽  
Hongyu Bai ◽  
Wencao Yang ◽  
William A. Hamilton ◽  
...  
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Simulations ◽  
Neutron Scattering ◽  
Small Angle ◽  
Small Angle Neutron Scattering ◽  
Spin Echo ◽  
Test Sample ◽  
Neutron Spin ◽  
Neutron Polarization ◽  
Magnetic Components

The spin echo modulated small-angle neutron scattering technique has been implemented using two superconducting magnetic Wollaston prisms at a reactor neutron source. The density autocorrelation function measured for a test sample of colloidal silica in a suspension agrees with that obtained previously by other neutron scattering methods on an identically prepared sample. The reported apparatus has a number of advantages over competing technologies: it should allow larger length scales (up to several micrometres) to be probed; it has very small parasitic neutron scattering and attenuation; the magnetic fields within the device are highly uniform; and the neutron spin transport across the device boundaries is very efficient. To understand quantitatively the results of the reported experiment and to guide future instrument development, Monte Carlo simulations are presented, in which the evolution of the neutron polarization through the apparatus is based on magnetic field integrals obtained from finite-element simulations of the various magnetic components. The Monte Carlo simulations indicate that the polarization losses observed in the experiments are a result of instrumental artifacts that can be easily corrected in future experiments.

Spin-echo small-angle neutron scattering for magnetic samples

2006 ◽  
Vol 39 (2) ◽  
pp. 252-258 ◽  
Author(s):  
Sergey V. Grigoriev ◽  
Wicher H. Kraan ◽  
M. Theo Rekveldt ◽  
Timofey Kruglov ◽  
Wim G. Bouwman
Keyword(s):  
Neutron Scattering ◽  
Small Angle ◽  
Small Angle Neutron Scattering ◽  
Spin Echo ◽  
Real Space ◽  
Magnetic Scattering ◽  
Neutron Spin ◽  
Magnetic Contribution ◽  
Nuclear Scattering ◽  
Density Correlation

A novel real-space scattering technique, spin-echo small-angle neutron scattering for magnetic samples, is described. Previously, this method has been exploited for non-magnetic samples only, in order to measure the nuclear density correlation function. Magnetic scattering is different from nuclear scattering as in the former a partial neutron spin-flip that affects the phase accumulation of the Larmor precession occurs just at the moment of scattering. Because of this intrinsic property of magnetic scattering, one can use a magnetic sample as a flipper in the spin-echo technique. This enables the separation of the magnetic contribution from other sources of scattering. Particular features of the technique are pointed out. Some model examples are considered. The similarity and the differences of magnetic SESANS with respect to the technique of three-dimensional neutron depolarization are discussed. The theoretical description is proven by experiments.

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