A high energy x-ray and neutron scattering study of iron phosphate glasses containing uranium

2000 ◽  
Vol 87 (5) ◽  
pp. 2185-2193 ◽  
Author(s):  
M. Karabulut ◽  
G. K. Marasinghe ◽  
C. S. Ray ◽  
G. D. Waddill ◽  
D. E. Day ◽  
...  
Keyword(s):  
Neutron Scattering ◽  
Iron Phosphate ◽  
High Energy ◽  
Phosphate Glasses ◽  
X Ray ◽  
Scattering Study ◽  
Neutron Scattering Study ◽  
Iron Phosphate Glasses

The Fe–O coordination in iron phosphate glasses by x-ray diffraction with high energy photons

2003 ◽  
Vol 15 (36) ◽  
pp. 6143-6153 ◽  
Author(s):  
U Hoppe ◽  
M Karabulut ◽  
E Metwalli ◽  
R K Brow ◽  
P J v ri
Keyword(s):  
Iron Phosphate ◽  
High Energy ◽  
Phosphate Glasses ◽  
X Ray Diffraction ◽  
X Ray ◽  
Iron Phosphate Glasses

The Effects of Uranium on the Structure of Iron Phosphate Glasses

1999 ◽  
Vol 556 ◽  
Author(s):  
Yaspal Badyal ◽  
Mevlut Karabulut ◽  
Kanishka Marasinghe ◽  
Marie-Louise Saboungi ◽  
Dean Haeffner ◽  
...  
Keyword(s):  
Glass Structure ◽  
Iron Phosphate ◽  
High Energy ◽  
Structural Features ◽  
Real Space ◽  
Phosphate Glasses ◽  
Base Glass ◽  
Pair Correlations ◽  
X Ray ◽  
Iron Phosphate Glasses

AbstractBecause of their high chemical durability and waste loading capacity, iron phosphate glasses are a natural candidate for a nuclear waste disposal medium. We have studied the effects of uranium on the structure of iron phosphate glasses with both neutron and high-energy x-raydiffraction. The results of neutron scattering, which is mostly sensitive to pair correlations involving light atoms i.e. O-O, Fe-O and P-O, indicate the main structural features of the base glass are largely unaffected by the addition of UO2. The nearest-neighborbour P-O, Fe-O and O- O peaks remain at the same position in real space and their intensities scale approximately with concentration. These findings are consistent with earlier results using Raman scattering and EXAFS on the Fe-K edge, where in both cases the spectra remain similar to the base glass. The results of high-energy x-ray scattering, which is sensitive to correlations involving the heavier atoms and thus complements the neutron measurements, are also consistent with the overall picture of uranium occupying interstitial sites in the relatively undisturbed base glass structure. Combining the neutron and x-ray data for a 10 mol% UO2 glass suggests the intriguing possibility of a U6+ uranyl ion configuration although further work is needed to establish the precise local structure and valence state of uranium in these glasses.

X-ray and neutron scattering study of the Nb-O solid solutions

1998 ◽  
Vol 266 (1-2) ◽  
pp. 230-233 ◽  
Author(s):  
S. Danilkin ◽  
H. Fuess ◽  
E. Jadrowski ◽  
T. Wieder ◽  
H. Wipf
Keyword(s):  
Neutron Scattering ◽  
Solid Solutions ◽  
X Ray ◽  
Scattering Study ◽  
Neutron Scattering Study

scholarly journals Neutron scattering study of the magnetic excitations in ferromagnetic iron at high energy transfers

1984 ◽  
Vol 55 (6) ◽  
pp. 1895-1897 ◽  
Author(s):  
C.‐K. Loong ◽  
J. M. Carpenter ◽  
J. W. Lynn ◽  
R. A. Robinson ◽  
H. A. Mook
Keyword(s):  
Neutron Scattering ◽  
High Energy ◽  
Magnetic Excitations ◽  
Energy Transfers ◽  
Scattering Study ◽  
Ferromagnetic Iron ◽  
Neutron Scattering Study

The structure of potassium germanate glasses – a combined X-ray and neutron scattering study

2000 ◽  
Vol 278 (1-3) ◽  
pp. 99-114 ◽  
Author(s):  
U. Hoppe ◽  
R. Kranold ◽  
H.-J. Weber ◽  
J. Neuefeind ◽  
A.C. Hannon
Keyword(s):  
Neutron Scattering ◽  
X Ray ◽  
Scattering Study ◽  
Neutron Scattering Study ◽  
Potassium Germanate ◽  
Germanate Glasses
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