A position-sensitive detector for neutron diffraction topography

1988 ◽  
Vol 21 (1) ◽  
pp. 28-33 ◽  
Author(s):  
J. Baruchel ◽  
K. Kuroda ◽  
P. Liaud ◽  
A. Michalowicz ◽  
D. Sillou
Keyword(s):  
Neutron Diffraction ◽  
Thermal Neutron ◽  
Spatial Resolution ◽  
Detection Efficiency ◽  
Position Sensitive Detector ◽  
Sensitive Area ◽  
Sensitive Detector ◽  
Position Sensitive

The first test of a position-sensitive photomultiplier in a thermal neutron diffraction topography experiment is reported: a spatial resolution was obtained of ≃200 μm in FWHM over a sensitive area of size ≃8 × 8 mm (≃1600 pixels) and a detection efficiency of the order of 15% when using a 0.25 mm thick ZnS–LiF (NE 426) scintillator. The advantages of this detector, its foreseeable improvements, and the scientific problems it could help to solve are discussed.

scholarly journals Evaluation of the divergence of a thermal neutron beam using a Position Sensitive Detector

2005 ◽  
Vol 35 (3b) ◽  
Author(s):  
Gevaldo L. de Almeida ◽  
Maria Ines Silvani ◽  
Rosanne C. A. A. Furieri ◽  
Marcelo J. Gonçalves ◽  
Ricardo Tadeu Lopes
Keyword(s):  
Thermal Neutron ◽  
Neutron Beam ◽  
Position Sensitive Detector ◽  
Sensitive Detector ◽  
Position Sensitive ◽  
Thermal Neutron Beam

scholarly journals Improvement of a gaseous position sensitive detector for use in thermal neutron tomographic systems

2004 ◽  
Vol 34 (3a) ◽  
pp. 756-759
Author(s):  
Marcelo J. Gonçalves ◽  
Ricardo T. Lopes ◽  
Maria Ines Silvani ◽  
Gevaldo L. de Almeida ◽  
Rosanne C. A. A. Furieri
Keyword(s):  
Thermal Neutron ◽  
Position Sensitive Detector ◽  
Sensitive Detector ◽  
Position Sensitive

scholarly journals Apparatus for Dynamical Texture Measurements by Neutron Diffraction Using a Position Sensitive- Detector

1983 ◽  
Vol 5 (4) ◽  
pp. 239-251 ◽  
Author(s):  
D. Juul Jensen ◽  
J. K. Kjems
Keyword(s):  
Neutron Diffraction ◽  
Position Sensitive Detector ◽  
Sensitive Detector ◽  
Neutron Spectrometer ◽  
Hot Air ◽  
New Apparatus ◽  
Position Sensitive ◽  
Set Up ◽  
Counting Statistics ◽  
Kinetics Of

A new apparatus for dynamical texture measurements using neutron diffraction has been developed. A variable wavelength neutron spectrometer has been modified to incorporate a linear position-sensitive detector. The sample is orientated by a fully automatic Euler goniometer, and it can be heated by a stream of hot air at rates up to 200℃/min. A quarter of a complete pole figure can be recorded in 14 minutes with an accuracy, determined by counting statistics, of 2–3%. The experimental set-up is described in the present paper and the performance, including sources of systematical errors, is discussed. Finally the viability of this apparatus is demonstrated by studies of the recrystallization kinetics of 95% cold rolled copper.

scholarly journals Texture Analysis by Neutron Diffraction Using a Linear Position Sensitive Detector

1989 ◽  
Vol 10 (4) ◽  
pp. 375-387 ◽  
Author(s):  
G. Will ◽  
W. Schäfer ◽  
P. Merz
Keyword(s):  
Neutron Diffraction ◽  
Texture Analysis ◽  
Profile Analysis ◽  
Position Sensitive Detector ◽  
Sensitive Detector ◽  
X Ray ◽  
Position Sensitive ◽  
Hematite Ore ◽  
Position Sensitive Detectors ◽  
Low Symmetry

Neutron diffraction in connection with a position-sensitive detector is a most powerful technique in texture analysis comparable in time with conventional X-ray laboratory technique. Neutrons measure the global texture of the sample allowing volumes up to several cm3. By using position-sensitive detectors and applying the mathematical procedures of profile analysis multiphase and low symmetry materials can be investigated without serious difficulties. Neutron diffraction experiments operating in transmission record complete diffraction profiles; overlapping lines are unscrambled by profile analysis. Technical and physical specifications of the dedicated detector JULIOS, installed on the texture diffractometer of Bonn University, are given. A hematite ore has been studied by this technique and the results are given.

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