Basic and Applied Science Research at the Los Alamos Neutron Science Center

2005 ◽  
Author(s):  
Paul W. Lisowski
Keyword(s):  
Science Research ◽  
Applied Science ◽  
Science Center ◽  
Los Alamos

LANSCE: Los Alamos Neutron Science Center

2017 ◽  
Author(s):  
Karen Elizabeth Kippen
Keyword(s):  
Science Center ◽  
Los Alamos

scholarly journals Through-Thickness Microstructure Characterization in a Centrifugally Cast Austenitic Stainless Steel Nuclear Reactor Primary Loop Pipe Using Time-of-Flight Neutron Diffraction

2021 ◽  
Vol 5 (2) ◽  
pp. 12
Author(s):  
Matthew M. Schmitt ◽  
Daniel J. Savage ◽  
James J. Wall ◽  
John D. Yeager ◽  
Chanho Lee ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Neutron Diffraction ◽  
Time Of Flight ◽  
Radial Distance ◽  
Ultrasonic Waves ◽  
Science Center ◽  
Los Alamos ◽  
Inspection Method ◽  
Centrifugally Cast

The US code of Federal Regulations mandates regular inspection of centrifugally cast austenitic stainless steel pipe, commonly used in primary cooling loops in light-water nuclear power plants. These pipes typically have a wall thickness of ~8 cm. Unfortunately, inspection using conventional ultrasonic techniques is not reliable as the microstructure strongly attenuates ultrasonic waves. Work is ongoing to simulate the behavior of acoustic waves in this microstructure and ultimately develop an acoustic inspection method for reactor inspections. In order to account for elastic anisotropy in the material, the texture in the steel was measured as a function of radial distance though the pipe wall. Experiments were conducted on two 10 × 12.7 × 80 mm radial sections of a cast pipe using neutron diffraction scans of 2 mm slices using the HIPPO time-of-flight neutron diffractometer at the Los Alamos Neutron Science Center (LANSCE, Los Alamos, NM, USA). Strong textures dominated by a small number of austenite grains with their (100) direction aligned in the radial direction of the pipe were observed. ODF analysis indicated that up to 70% of the probed volume was occupied by just three single-grain orientations, consistent with grain sizes of almost 1 cm. Texture and phase fraction of both ferrite and austenite phases were measured along the length of the samples. These results will inform the development of a more robust diagnostic tool for regular inspection of this material.

scholarly journals SPIDER: A new instrument for fission fragment research at the Los Alamos Neutron Science Center

2013 ◽  
Vol 62 ◽  
pp. 05002 ◽  
Author(s):  
Fredrik Tovesson ◽  
Charles Arnold ◽  
Rick Blakeley ◽  
Adam Hecht ◽  
Alexander Laptev ◽  
...  
Keyword(s):  
Fission Fragment ◽  
Science Center ◽  
Los Alamos ◽  
New Instrument

scholarly journals Studies of fission fragment properties at the Los Alamos Neutron Science Center (LANSCE)

2017 ◽  
Vol 146 ◽  
pp. 04010 ◽  
Author(s):  
Fredrik Tovesson ◽  
Dmitriy Mayorov ◽  
Dana Duke ◽  
Brett Manning ◽  
Verena Geppert-Kleinrath
Keyword(s):  
Fission Fragment ◽  
Science Center ◽  
Los Alamos

scholarly journals Proposal for a Fusion Prototype Neutron Source at the Los Alamos Neutron Science Center

2019 ◽  
Author(s):  
Eric John Pitcher ◽  
Yuri Konstantinovich Batygin ◽  
Stuart Andrew Maloy
Keyword(s):  
Neutron Source ◽  
Science Center ◽  
Los Alamos

The Applied Science Center for Archaeology

1963 ◽  
Vol 29 (2) ◽  
pp. 237-239
Author(s):  
Froelich Rainey
Keyword(s):  
Trace Elements ◽  
Applied Science ◽  
Science Center ◽  
Precise Location ◽  
New Techniques ◽  
University Museum ◽  
The University ◽  
Further Development

AbstractThe Applied Science Center for Archaeology of the University Museum in Philadelphia is now experimenting with devices that will facilitate the task of precise location and even discovery of cultural strata. The Geohm resistometer and the proton magnetometer are both being used satisfactorily, and further development of a new sonic device has begun. The Center has also been studying new techniques for the determination of trace elements in metals and ceramics, and the thermoluminescence method for dating pottery and other fired objects. In cooperation with the already established radiocarbon laboratory, a project is underway to acquire and date tree samples of very great age. The Center is also gathering and cross-indexing information on completed analyses carried out with the various dating devices and techniques. This information is drawn from both published and unpublished materials.

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