Memory Pulsed Neutron Logging - Avoiding Production Shutdown Losses Caused By In-field Logistical Constraints

2013 ◽  
Author(s):  
Jawdat M Bilbeisi ◽  
Hicham Abuchaker
Keyword(s):  
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.

SELF-COMPENSATED CASED-HOLE PULSED NEUTRON SPECTROSCOPY MEASUREMENTS

2020 ◽  
Author(s):  
Tong Zhou ◽  
◽  
David Rose ◽  
Jeffrey Miles ◽  
Jason Gendur ◽  
...  
Keyword(s):  
Neutron Spectroscopy ◽  
Pulsed Neutron

scholarly journals LUE-200 Accelerator—A Photo-neutron Generator For The Pulsed Neutron Source “IREN”

2020 ◽  
Vol 15 (11) ◽  
pp. T11006-T11006
Author(s):  
A. Sumbaev ◽  
V. Kobets ◽  
V. Shvetsov ◽  
N. Dikansky ◽  
P. Logatchov
Keyword(s):  
Neutron Source ◽  
Neutron Generator ◽  
Pulsed Neutron ◽  
Pulsed Neutron Source

scholarly journals Neutron activation analysis of archeological artifacts using the ISIS pulsed neutron source

AIP Advances ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 075005
Author(s):  
Carlo Cazzaniga ◽  
Antonella Scherillo ◽  
Anna Fedrigo ◽  
Davide Raspino ◽  
Francesco Grazzi ◽  
...  
Keyword(s):  
Neutron Activation Analysis ◽  
Activation Analysis ◽  
Neutron Activation ◽  
Neutron Source ◽  
Archeological Artifacts ◽  
Pulsed Neutron ◽  
Pulsed Neutron Source

scholarly journals Analysis and Mapping of Detailed Inner Information of Crystalline Grain by Wavelength-Resolved Neutron Transmission Imaging with Individual Bragg-Dip Profile-Fitting Analysis

2021 ◽  
Vol 11 (11) ◽  
pp. 5219
Author(s):  
Yosuke Sakurai ◽  
Hirotaka Sato ◽  
Nozomu Adachi ◽  
Satoshi Morooka ◽  
Yoshikazu Todaka ◽  
...  
Keyword(s):  
Crystal Orientation ◽  
Perfect Crystal ◽  
Imaging Method ◽  
Transmission Imaging ◽  
Profile Fitting ◽  
Imaging Results ◽  
Integrated Intensity ◽  
Small Change ◽  
Integrated Intensities ◽  
Pulsed Neutron

As a new method for evaluating single crystals and oligocrystals, pulsed neutron Bragg-dip transmission analysis/imaging method is being developed. In this study, a single Bragg-dip profile-fitting analysis method was newly developed, and applied for analyzing detailed inner information in a crystalline grain position-dependently. In the method, the spectrum profile of a single Bragg-dip is analyzed at each position over a grain. As a result, it is expected that changes in crystal orientation, mosaic spread angle and thickness of a perfect crystal can be evaluated from the wavelength, the width and the integrated intensity of the Bragg-dip, respectively. For confirming this effectiveness, the method was applied to experimental data of position-dependent Bragg-dip transmission spectra of a Si-steel plate consisting of oligocrystals. As a result, inner information of multiple crystalline grains could be visualized and evaluated. The small change in crystal orientation in a grain, about 0.4°, could be observed by imaging the Bragg-dip wavelengths. By imaging the Bragg-dip widths, both another grain and mosaic block in a grain were detected. Furthermore, imaging results of the integrated intensities of Bragg-dips were consistent with the results of Bragg-dip width imaging. These small crystallographic changes have not been observed and visualized by previous Bragg-dip analysis methods.

Improved Pulsed Neutron Capture Logging With Slim Carbon-Oxygen Tools: Methodology

1995 ◽  
Author(s):  
R.E. Plasek ◽  
R.A. Adolph ◽  
C. Stoller ◽  
D.J. Willis ◽  
E.E. Bordon ◽  
...  
Keyword(s):  
Neutron Capture ◽  
Pulsed Neutron

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

Commissioning of the Argonne Intense Pulsed Neutron Source (IPNS-I) Accelerator

1979 ◽  
Vol 26 (3) ◽  
pp. 3006-3008 ◽  
Author(s):  
Antanas V. Rauchas ◽  
Franklin R. Brumwell ◽  
Gerald J. Volk
Keyword(s):  
Neutron Source ◽  
Pulsed Neutron ◽  
Pulsed Neutron Source
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