Pulsed neutron scattering on molten Bi + BiI3 mixtures

1981 ◽  
Vol 83 (1) ◽  
pp. 35-38 ◽  
Author(s):  
Kazuhiko Ichikawa ◽  
Takaaki Matsumoto
Keyword(s):  
Neutron Scattering ◽  
Pulsed Neutron

Local atomic structure of relaxor ferroelectric solids studied by pulsed neutron scattering

1994 ◽  
Vol 52 ◽  
pp. 554-555
Author(s):  
T. Egami ◽  
H. D. Rosenfeld ◽  
S. Teslic
Keyword(s):  
Neutron Scattering ◽  
Atomic Structure ◽  
Argonne National Laboratory ◽  
Relaxor Ferroelectrics ◽  
Relaxor Ferroelectric ◽  
Crystallographic Structure ◽  
Chemical Inhomogeneity ◽  
Distribution Analysis ◽  
Ferroelectric Transition ◽  
Pulsed Neutron

Relaxor ferroelectrics, such as Pb(Mg1/3Nb2/3)O3 (PMN) or (Pb·88La ·12)(Zr·65Ti·35)O3 (PLZT), show diffuse ferroelectric transition which depends upon frequency of the a.c. field. In spite of their wide use in various applications details of their atomic structure and the mechanism of relaxor ferroelectric transition are not sufficiently understood. While their crystallographic structure is cubic perovskite, ABO3, their thermal factors (apparent amplitude of thermal vibration) is quite large, suggesting local displacive disorder due to heterovalent ion mixing. Electron microscopy suggests nano-scale structural as well as chemical inhomogeneity.We have studied the atomic structure of these solids by pulsed neutron scattering using the atomic pair-distribution analysis. The measurements were made at the Intense Pulsed Neutron Source (IPNS) of Argonne National Laboratory. Pulsed neutrons are produced by a pulsed proton beam accelerated to 750 MeV hitting a uranium target at a rate of 30 Hz. Even after moderation by a liquid methane moderator high flux of epithermal neutrons with energies ranging up to few eV’s remain.

Comparison of Small-Angle Neutron Scattering of δ' Precipitation in an Al–Li Alloy at a High-Flux Reactor and at a Pulsed-Neutron Source

1997 ◽  
Vol 30 (5) ◽  
pp. 602-606 ◽  
Author(s):  
G. Albertini ◽  
F. Carsughi ◽  
R. Coppola ◽  
R. K. Heenan ◽  
M. Stefanon
Keyword(s):  
Neutron Scattering ◽  
Small Angle ◽  
Small Angle Neutron Scattering ◽  
Size Distribution Function ◽  
Data Sets ◽  
Flux Reactor ◽  
Average Size ◽  
Pulsed Neutron ◽  
Pulsed Neutron Source ◽  
Good Agreement

Two different small-angle neutron scattering (SANS) facilities, the D11 camera at the Institut Laue–Langevin (ILL, Grenoble, France) and the LOQ time-of-flight diffractometer at the Rutherford Appleton Laboratory (RAL, Didcot, Oxon, England), were used in the investigations of δ′-Al3Li precipitation at 463 K in Al–Li 3% alloy. The results obtained from the steady-state reactor and from the pulsed source by using two different data-acquisition techniques and two different procedures for data analysis are compared. The SANS curves for the same set of samples investigated using the two different instruments are in good agreement within the experimental uncertainties. A check was also made on the metallurgically relevant quantities, namely the average size and the size-distribution function of the δ′ precipitates at the various stages of the ageing process, obtained from the two sets of SANS curves by applying the same numerical method. Good agreement was found between the results from the two data sets.

Pulsed Neutron Scattering for the 21st Century

Physics Today ◽  
2006 ◽  
Vol 59 (5) ◽  
pp. 44-49 ◽  
Author(s):  
Thomas E. Mason
Keyword(s):  
Neutron Scattering ◽  
21St Century ◽  
Pulsed Neutron

Inelastic pulsed-neutron scattering from CsVCl3

1995 ◽  
Vol 213-214 ◽  
pp. 161-163 ◽  
Author(s):  
S. Itoh ◽  
K. Kakurai ◽  
Y. Endoh ◽  
H. Tanaka
Keyword(s):  
Neutron Scattering ◽  
Pulsed Neutron

scholarly journals The Data Acquisition System for the Neutron Scattering Instruments at the Intense Pulsed Neutron Source

1981 ◽  
Vol 28 (5) ◽  
pp. 3692-3700 ◽  
Author(s):  
R. K. Crawford ◽  
R. T. Daly ◽  
J. R. Haumann ◽  
R. L. Hitterman ◽  
C. B. Morgan ◽  
...  
Keyword(s):  
Data Acquisition ◽  
Neutron Scattering ◽  
Neutron Source ◽  
Data Acquisition System ◽  
Acquisition System ◽  
Pulsed Neutron ◽  
Pulsed Neutron Source
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