Anomalous neutron scattering and coupling of protons to the environment at different temperatures

2004 ◽  
Vol 350 (1-3) ◽  
pp. E1035-E1038 ◽  
Author(s):  
T Abdul-Redah ◽  
C.A Chatzidimitriou-Dreismann
Keyword(s):  
Neutron Scattering ◽  
Different Temperatures

Atomic dynamics in molten AlCu alloys of different compositions and at different temperatures by cold neutron scattering

2013 ◽  
Vol 412 ◽  
pp. 50-60 ◽  
Author(s):  
U. Dahlborg ◽  
M. Besser ◽  
M.J. Kramer ◽  
J.R. Morris ◽  
M. Calvo-Dahlborg
Keyword(s):  
Neutron Scattering ◽  
Cold Neutron ◽  
Different Temperatures

scholarly journals Sintering characteristics of nanocrystalline TiO2—A study combining small angle neutron scattering and nitrogen absorption–BET

1991 ◽  
Vol 6 (10) ◽  
pp. 2193-2198 ◽  
Author(s):  
W. Wagner ◽  
R.S. Averback ◽  
H. Hahn ◽  
W. Petry ◽  
A. Wiedenmann
Keyword(s):  
Neutron Scattering ◽  
Small Angle ◽  
Pore Volume ◽  
Small Angle Neutron Scattering ◽  
Ceramic Materials ◽  
Sample Volume ◽  
Nitrogen Absorption ◽  
Nanocrystalline Tio2 ◽  
Different Temperatures ◽  
Sintering Characteristics

Small angle neutron scattering (SANS) was employed to characterize the pore structure of nanophase TiO2 ceramic materials compacted at different temperatures. Nanophase samples, produced by inert gas condensation, were compacted at 25, 290, 413, and 550 °C using a pressure of ≍1 GPa. The pore size distribution of the sample compacted at room temperature was very broad, with sizes ranging from ≍3–30 nm and pores comprising 38% of the sample volume. Compaction at 290 and 413 °C reduced the pore volume to 25% and 20%, respectively, by eliminating pores at both the small and large ends of the distribution. Compaction at 550 °C resulted in a pore volume that was less than 8%. Complications in the SANS analysis arising from the scattering from grain boundaries are discussed. The results from SANS are compared with those derived from nitrogen absorption, BET, measurements.

Hydrogen Motion In Lanthanum Hydrides By Means Of Quasielastic Neutron Scattering

1998 ◽  
Vol 513 ◽  
Author(s):  
C. Karmonik ◽  
T. J. Udovic ◽  
J. J. Rush
Keyword(s):  
Neutron Scattering ◽  
Long Range ◽  
Powder Diffraction ◽  
Octahedral Site ◽  
Translational Diffusion ◽  
Neutron Powder Diffraction ◽  
Neutron Spectra ◽  
Different Temperatures ◽  
Quasielastic Neutron ◽  
Quasielastic Neutron Scattering

ABSTRACTThe hydrogen dynamics in LaHx was studied for different concentrations x ≥ 2.5 at different temperatures by quasielastic neutron scattering. The neutron spectra show the existence of both long-range translational diffusion and localized motion. The prefactor of the jump rate for the first process exhibits a maximum around x= 2.75. The radius for the second motion is in agreement with neutron powder diffraction measurements which support a localized motion of H confined in an octahedral site.

scholarly journals Thermal neutron scattering data for liquid molten salt LiF-BeF2

2020 ◽  
Vol 239 ◽  
pp. 14004
Author(s):  
Jia Wang ◽  
Hongzhou Song ◽  
Yun Bai ◽  
Weili Sun
Keyword(s):  
Neutron Scattering ◽  
Thermal Neutron ◽  
Molten Salt ◽  
Ab Initio Molecular Dynamics ◽  
Scattering Data ◽  
Effective Width ◽  
Diffusion Type ◽  
Type Spectrum ◽  
Different Temperatures ◽  
Thermal Neutron Scattering

Ab initio molecular dynamics (AIMD) methods were used to calculate the density of states (DOS) for liquid molten salt Li2BeF4 (LiF-BeF2) in different temperatures. The Egelstaff and Schofield effective width model was used to obtain the diffusion-type spectrum of the DOS and the corresponding partial s (α, β). Finally, the thermal neutron scattering data for liquid molten salt LiF-BeF2 were given.

Neutron scattering investigations of lattice dynamics and structure of superconducting ceramics La2−xSrxCuO4−δ at different temperatures

1988 ◽  
Vol 156 (2) ◽  
pp. 259-264 ◽  
Author(s):  
A.V. Belushkin ◽  
E.A. Goremychkin ◽  
I. Natkaniec ◽  
I.L. Sashin ◽  
W. Zajac ◽  
...  
Keyword(s):  
Neutron Scattering ◽  
Lattice Dynamics ◽  
Superconducting Ceramics ◽  
Different Temperatures
Sign in / Sign up

Export Citation Format

Share Document