AMR ATTIA__________________________________________________________________________
Neutron Diffraction
Amr Attia
Department of physics ,Faculty of Science
South Valley University, Egypt
Neutron Physics and application in materials science
and Nuclear Physics - group
presented at the
2n Summer School in DUBNA
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2n summer school in DUBNA.
slide 1
June 4, 2010
AMR ATTIA__________________________________________________________________________
Outlines
•
•
•
•
•
•
What's the Neutron diffraction ?
Applications of Neutron Diffraction.
What's the H R F D?
research program
Standard results.
Acknowledgement.
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2n summer school in DUBNA.
slide 2
June 4, 2010
AMR ATTIA__________________________________________________________________________
What's the Neutron diffraction ?
•
Neutron diffraction is a method by which
neutrons are used to determine the atomic
and/or magnetic structure of a material. It can
be equally well applied to study crystalline
solid, gasses, liquids or amorphous materials
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2n summer school in DUBNA.
slide 3
June 4, 2010
AMR ATTIA__________________________________________________________________________
Applications of Neutron Diffraction
chemistry
biochemistry
geological sciences
engineering
life sciences
materials science
archeology
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2n summer school in DUBNA.
slide 4
June 4, 2010
AMR ATTIA__________________________________________________________________________
What's the HRFD?
• High resolution Fourier diffractometer HRFD
is a unique instrument for carrying out neutron
diffraction
experiments
requiring
the
interplanar spacing resolution on the level of
0.001.
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2n summer school in DUBNA.
slide 5
June 4, 2010
AMR ATTIA__________________________________________________________________________
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2n summer school in DUBNA.
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June 4, 2010
AMR ATTIA__________________________________________________________________________
research program
• Structural experiments :Investigation of phase
transitions in powders and single crystals
• Measurement of residual internal stresses in
bulk samples
__________________________________________________________
2n summer school in DUBNA.
slide 7
June 4, 2010
AMR ATTIA__________________________________________________________________________
Standard results
Al2O3 NIST standard
alo631
Normalized intensity
Al2O3
HRFD
0.7
0.8
0.9
1.0
4
0
-4
0.6
0.8
1.0
1.2
1.4
1.6
d, Å
1.8
2.0
2.2
2.4
2.6
__________________________________________________________
2n summer
school in DUBNA.
slide 8
June 4, 2010
8
Rietv
AMR ATTIA__________________________________________________________________________
Na2Al2Ca3F14
Normalized intensity
nac-hrpt
HRPT
NAC, =1.886 Å
20
40
60
80
100
2, grad.
120
140
160
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2n summer school in DUBNA.
slide 9
June 4, 2010
AMR ATTIA__________________________________________________________________________
Acknowledgement
• Before all and above all, thanks to Allah.
• I wish to express my deep gratitude and
thanks to Dr/ Ivan Bobrikov
__________________________________________________________
2n summer school in DUBNA.
slide 10
June 4, 2010
AMR ATTIA__________________________________________________________________________
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2n summer school in DUBNA.
slide 11
June 4, 2010