scholarly journals Comparison of Quantitative Texture Analysis Results From Time-of-Flight and Conventional Neutron Diffraction

1980 ◽  
Vol 4 (1) ◽  
pp. 1-11 ◽  
Author(s):  
K. Feldmann ◽  
M. Betzl ◽  
A. Andreeff ◽  
K. Hennig ◽  
K. Kleinstück ◽  
...  
Keyword(s):  
Neutron Diffraction ◽  
Texture Analysis ◽  
Steel Wire ◽  
Time Of Flight ◽  
Multiphase Materials ◽  
Neutron Time ◽  
Time Of Flight Method ◽  
Low Symmetry ◽  
Good Agreement

The adaptability of time-of-flight neutron diffraction for quantitative texture analysis is demonstrated. Measurements with this technique on drawn steel wire show good agreement with the results from conventional neutron diffraction experiments. A short description of the neutron time-of-flight method is given. Its application for texture investigations especially on low-symmetry crystalline systems, multiphase materials and for in situ studies is discussed.

EPSILON-MDS – A Neutron Time-of-Flight Diffractometer for Strain Measurements

2005 ◽  
Vol 105 ◽  
pp. 67-70 ◽  
Author(s):  
Kurt Walther ◽  
Alexander Frischbutter ◽  
Christian Scheffzük ◽  
M. Korobshenko ◽  
F. Levshanovski ◽  
...  
Keyword(s):  
Neutron Diffraction ◽  
Data Acquisition ◽  
Spectral Resolution ◽  
Time Of Flight ◽  
Detector System ◽  
Geological Samples ◽  
Strain Measurements ◽  
Efficient Data ◽  
Neutron Time ◽  
Time Of Flight Method

This paper describes the modernized diffractometer EPSILON-MDS for strain measurements of geological samples by means of neutron diffraction with the time-of-flight method. The diffractometer is characterized by a long flight path in order to get a good spectral resolution and by a multi-detector system for efficient data acquisition.

Structural evolution in LiFePO4-based battery materials: In-situ and ex-situ time-of-flight neutron diffraction study

2014 ◽  
Vol 258 ◽  
pp. 356-364 ◽  
Author(s):  
I.A. Bobrikov ◽  
A.M. Balagurov ◽  
Chih-Wei Hu ◽  
Chih-Hao Lee ◽  
Tsan-Yao Chen ◽  
...  
Keyword(s):  
Neutron Diffraction ◽  
Diffraction Study ◽  
Time Of Flight ◽  
Structural Evolution ◽  
Neutron Diffraction Study ◽  
Ex Situ ◽  
Battery Materials

Time-of-flight neutron diffraction studies of clay-fluid interactions under basin conditions

Clay Minerals ◽  
2000 ◽  
Vol 35 (1) ◽  
pp. 283-290 ◽  
Author(s):  
N. T. Skipper ◽  
G. D. Williams ◽  
A. V. C. de Siqueira ◽  
C. Lobban ◽  
A. K. Soper
Keyword(s):  
Neutron Diffraction ◽  
Sedimentary Basin ◽  
Time Of Flight ◽  
Ambient Conditions ◽  
Isotopic Labelling ◽  
Fluid Systems ◽  
High Pressure High Temperature ◽  
Temperature Sample ◽  
Fluid Interactions

AbstractNeutron diffraction experiments can provide an extremely high-resolution structural picture of clay-fluid systems. Here we describe the application of time-of-flight neutron scattering to hydrated clays, including discussion of issues such as isotopic labelling, sample containment, and data analysis. Recent studies of hydrated vermiculites under ambient conditions are used as an example. We then describe a new high-pressure/high-temperature sample environment that is being used to study clay-fluid interactions, in situ under hydrostatic sedimentary basin conditions. This environment enables us to approximate conditions encountered during burial, at depths of up to 10 km.

Rapid Measurement of Texture of Metals by Time-of-Flight Neutron Diffraction at iMATERIA and its Applications

2016 ◽  
Vol 879 ◽  
pp. 1426-1430 ◽  
Author(s):  
Yusuke Onuki ◽  
Akinori Hoshikawa ◽  
Shigeo Sato ◽  
Toru Ishigaki
Keyword(s):  
Neutron Diffraction ◽  
Measurement System ◽  
Life Science ◽  
Time Of Flight ◽  
Incident Beam ◽  
High Flux ◽  
Experimental Facility ◽  
Texture Measurement ◽  
Rapid Measurement ◽  
Time Of Flight Method

The authors have developed the texture measurement system at iMATERIA, which is the neutron diffractometers built in Materials and Life Science Experimental Facility (MLF) at J-PARC, Japan. The high flux of the incident beam and Time-Of-Flight method enabled the complete texture measurement within several minutes in case of steels. Since the neutron beam can transmit most of the materials, the measured texture represents the state of whole exposed volume. The multi-histogram analysis also enables to determine phase fractions in a multiphase material as well as the texture of each phase.

scholarly journals New test of the dynamic theory of neutron diffraction by a moving grating

2018 ◽  
Vol 177 ◽  
pp. 03005
Author(s):  
Maxim Zakharov ◽  
Alexander Frank ◽  
German Kulin ◽  
Semyon Goryunov
Keyword(s):  
Experimental Data ◽  
Numerical Simulation ◽  
Neutron Diffraction ◽  
Dynamic Theory ◽  
Time Of Flight ◽  
Dynamical Theory ◽  
Zero Order ◽  
Significant Suppression ◽  
Theoretical Predictions ◽  
Good Agreement

Recently, multiwave dynamical theory of neutron diffraction by a moving grating was developed. The theory predicts that at a certain height of the grating profile a significant suppression of the zero-order diffraction may occur. The experiment to confirm predictions of this theory was performed. The resulting diffracted UCNs spectra were measured using time-of-flight Fourier diffractometer. The experimental data were compared with the results of numerical simulation and were found in a good agreement with theoretical predictions.

Application of Spectroscopic Radiography Using Pulsed Neutron Time-of-Flight Method for Material Characterization

2006 ◽  
Vol 321-323 ◽  
pp. 1663-1666 ◽  
Author(s):  
Yoshiaki Kiyanagi ◽  
Takashi Kamiyama ◽  
Toshiyuki Nagata ◽  
F. Hiraga
Keyword(s):  
Material Characterization ◽  
Time Of Flight ◽  
Neutron Imaging ◽  
Whole Body ◽  
Structure Information ◽  
Transmission Image ◽  
Neutron Time ◽  
The Difference ◽  
Pulsed Neutron ◽  
Time Of Flight Method

Neutron imaging using a pulsed neutron time-of-flight method can give an energy dependent transmission image, namely, spectroscopic image. This image includes the structure information if the sample is coherent scatterer. Here, two examples are introduced. First, we obtained the transmission image of a welded sample of SS304 and 308. Change of the crystal structure depending on the position was observed. Furthermore, we measured spatial dependent transmission of SS samples treated in different ways, surface treatment and whole body treatment. There were almost no spatial dependent change, but the cross section change was found between surface and whole body treatment samples. It was suggested that this might be due to the difference of a grain size. These results demonstrated that the spectroscopic imaging using a pulsed neutron source is a useful tool for material characterization.

Strain and Particle Size of Palladium Metal Powders by Time-of-Flight Neutron Diffraction

1989 ◽  
Vol 33 ◽  
pp. 403-407
Author(s):  
A. C. Lawson ◽  
J. W. Conant ◽  
C. L. Talcott ◽  
M. A. David ◽  
J. Vaninetti ◽  
...  
Keyword(s):  
Particle Size ◽  
Neutron Diffraction ◽  
Powder Diffraction ◽  
Time Of Flight ◽  
Metal Powders ◽  
Line Broadening ◽  
X Ray ◽  
Palladium Powder ◽  
Time Of Flight Method ◽  
Palladium Metal

AbstractWe have determined the strain and particle size for several samples of palladium powder by time-of-flight nrutron powder diffraction on two different diffractometers and by x-ray powder diffraction. The results are compared and found to be in fair agreement. The time-of-flight method gives good enough precision to reveal deficiencies in the simple models used for strain and particle size line broadening.

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