scholarly journals Data Analysis and Background Subtraction in Neutron Spin Echo Spectroscopy

2021 ◽  
Vol 8 ◽  
Author(s):  
Ingo Hoffmann
Keyword(s):  
Data Analysis ◽  
Dynamic Range ◽  
Time Window ◽  
Spin Echo ◽  
Neutron Spin ◽  
Large Dynamic Range ◽  
Single Measurement ◽  
Complex Samples ◽  
Neutron Spin Echo ◽  
Intermediate Scattering Function

With the constantly improving performance of neutron spin echo (NSE) spectrometers it becomes possible to perform measurements on increasingly complex samples and to study more and more delicate effects. To properly study such effects, proper background correction becomes increasingly important. In this paper, we will review different methods to subtract the buffer from NSE measurements and study the effect of small errors in the subtraction of the background. In the large dynamic range of modern neutron spin-echo spectrometers multiple effects become visible in a single measurement. Specifically, for vesicles both membrane undulations and translational diffusion have an effect on the intermediate scattering function in the NSE time window and here, we will investigate how taking this into account differently affects the results obtained from data analysis.

scholarly journals Understanding near-surface polymer dynamics by a combination of grazing-incidence neutron scattering and virtual experiments

2021 ◽  
Vol 54 (1) ◽  
Author(s):  
Tetyana Kyrey ◽  
Marina Ganeva ◽  
Judith Witte ◽  
Regine von Klitzing ◽  
Stefan Wellert ◽  
...  
Keyword(s):  
Data Analysis ◽  
Spin Echo ◽  
Grazing Incidence ◽  
Incidence Geometry ◽  
Polymer Dynamics ◽  
Neutron Spin ◽  
Time Range ◽  
Near Surface ◽  
Virtual Experiments ◽  
Neutron Spin Echo

Neutron spin-echo spectroscopy is a unique experimental method for the investigation of polymer dynamics. The combination of neutron spin-echo spectroscopy with grazing-incidence geometry (GINSES) opens the possibility to probe the dynamics of soft-matter materials in the vicinity of the solid substrate in the time range up to 100 ns. However, the usage of the GINSES technique has some peculiarities and, due to the novelty of the method and complexity of the scattering geometry, difficulties in further data analysis occur. The current work discusses how virtual experiments within the distorted-wave Born approximation using the BornAgain software can improve GINSES data treatment and aid the understanding of polymer dynamics in the vicinity of the solid surface. With two examples, poly(N-isopropyl acrylamide) brushes and poly(ethylene glycol) microgels on Si surfaces, the simulation as well as the application of the simulation to the GINSES data analysis are presented. The approach allowed a deeper insight to be gained of the background effect and scattering contribution of different layers.

Study on the temperature-dependent coupling among viscosity, conductivity and structural relaxation of ionic liquids

2015 ◽  
Vol 17 (29) ◽  
pp. 19126-19133 ◽  
Author(s):  
Tsuyoshi Yamaguchi ◽  
Takuya Yonezawa ◽  
Shinobu Koda
Keyword(s):  
Ionic Liquids ◽  
Structural Relaxation ◽  
Spin Echo ◽  
Neutron Spin ◽  
Temperature Dependent ◽  
Frequency Dependent ◽  
Neutron Spin Echo ◽  
Dependent Viscosity

The frequency-dependent viscosity and conductivity of three imidazolium-based ionic liquids were measured at several temperatures in the MHz region, and the results are compared with the intermediate scattering functions determined by neutron spin echo spectroscopy.

Development of new neutron spin echo spectrometer based on neutron spin interferometry

2002 ◽  
Vol 311 (1-2) ◽  
pp. 102-105 ◽  
Author(s):  
S Tasaki ◽  
T Ebisawa ◽  
M Hino ◽  
T Kawai ◽  
D Yamazaki ◽  
...  
Keyword(s):  
Spin Echo ◽  
Neutron Spin ◽  
Neutron Spin Echo

HMI holds workshop on neutron spin echo spectroscopy

Neutron News ◽  
2001 ◽  
Vol 12 (2) ◽  
pp. 4-5
Author(s):  
Thomas Gutberlet ◽  
Catherine Pappas
Keyword(s):  
Spin Echo ◽  
Neutron Spin ◽  
Neutron Spin Echo

Proton Dynamics in Hydrated BaZr0.9M0.1O2.95 (M = Y and Sc) Investigated with Neutron Spin–Echo

2016 ◽  
Vol 120 (26) ◽  
pp. 13963-13969 ◽  
Author(s):  
Daria Noferini ◽  
Michael M. Koza ◽  
Peter Fouquet ◽  
Gøran J. Nilsen ◽  
Moureen C. Kemei ◽  
...  
Keyword(s):  
Spin Echo ◽  
Neutron Spin ◽  
Neutron Spin Echo ◽  
Proton Dynamics

scholarly journals Bending elastic properties of a block copolymer-rich lamellar phase doped by a surfactant: a neutron spin-echo study

Soft Matter ◽  
2014 ◽  
Vol 10 (36) ◽  
pp. 6926-6930 ◽  
Author(s):  
H. Egger ◽  
G. H. Findenegg ◽  
O. Holderer ◽  
R. Biehl ◽  
M. Monkenbusch ◽  
...  
Keyword(s):  
Block Copolymer ◽  
Elastic Properties ◽  
Spin Echo ◽  
Lamellar Phase ◽  
Neutron Spin ◽  
Neutron Spin Echo

Measurement of Vortex Motion in a Type-II Superconductor: A Novel Use of the Neutron Spin-Echo Technique

2000 ◽  
Vol 85 (16) ◽  
pp. 3488-3491 ◽  
Author(s):  
E. M. Forgan ◽  
P. G. Kealey ◽  
S. T. Johnson ◽  
A. Pautrat ◽  
Ch. Simon ◽  
...  
Keyword(s):  
Spin Echo ◽  
Vortex Motion ◽  
Neutron Spin ◽  
Type Ii ◽  
Neutron Spin Echo ◽  
Type Ii Superconductor ◽  
Spin Echo Technique

Neutron spin echo studies of SrCr8Ga 4O19

1998 ◽  
Vol 177-181 ◽  
pp. 701-702 ◽  
Author(s):  
Y.J. Uemura ◽  
B.D. Gaulin ◽  
M. Mekata ◽  
I. Mirebeau ◽  
S. Pouget ◽  
...  
Keyword(s):  
Spin Echo ◽  
Neutron Spin ◽  
Neutron Spin Echo
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