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545 Matching Results
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The Dynamic Response of Thick-Liquid Shielding in Z-IFE Reactors
A major concern in the design of thick-liquid protected inertial fusion reactors of all types is the dynamic response of the shielding liquid to the pulsed explosions. Induced liquid motion can stress and damage solid chamber structures such as the firstwall. In a z-pinch based inertial fusion (Z-IFE) reactor this issue becomes particularly critical due to the relatively large proposed target yields of several GJ. In this paper we summarize an analysis of the liquid response taking into account ablation of target facing surfaces, pocket venting, and neutron isochoric heating. The impact of varying several reactor parameters is also discussed.
Date:
October 5, 2005
Creator:
Abbott, R P
Object Type:
Article
System:
The UNT Digital Library
Timpson & Tenaha News (Timpson, Tex.), Vol. 21, No. 40, Ed. 1 Thursday, October 5, 2006
Weekly newspaper from Timpson, Texas that includes local, state, and national news along with advertising.
Date:
October 5, 2006
Creator:
Alexander, Nancy
Object Type:
Newspaper
System:
The Portal to Texas History
Impact of spectral transition zone in reference ENIGMA configuration.
The gas-cooled fast reactor (GFR) is one of six advanced nuclear energy systems being studied under the auspices of the Gen IV International Forum (GIF). In a bilateral International Nuclear Energy Research Initiative (I-NERI) project French and U.S. national laboratories, industry, and universities are collaborating on the development of the GFR. This effort is led by the ANL in the U.S. and the CEA in France. Some of the attractions of the GFR include: (1) Hard spectrum and core breeding ratio, BR {approx} 1. These features allow minimal waste production, improved transmutation capability, optimal and flexible use of natural resources, potentially better economy (because of use of higher power density relative to current thermal gas-cooled systems), and improved non-proliferation (no fertile blanket); (2) Temperature resistant fuel and structure elements that are favorable to tight fission product confinement and system operation at high temperature; (3) High temperature and transparent helium (He) gas coolant that allows a high thermodynamic conversion efficiency, other energy applications (e.g., hydrogen production), and ease of in-service inspection and repair; and (4) Possible direct energy conversion cycle leading to a simpler design, increased conversion efficiency, and lower investment costs. The French strategy for advanced systems includes the development …
Date:
October 5, 2005
Creator:
Aliberti, G.; Palmiotti, G.; Taiwo, T. A. & Tommasi, J.
Object Type:
Report
System:
The UNT Digital Library
Filtered cathodic arc deposition with ion-species-selectivebias
A dual-cathode arc plasma source was combined with acomputer-controlled bias amplifier such as to synchronize substrate biaswith the pulsed production of plasma. In this way, bias can be applied ina material-selective way. The principle has been applied to the synthesismetal-doped diamond-like carbon films, where the bias was applied andadjusted when the carbon plasma was condensing, and the substrate was atground when the metal was incorporated. In doing so, excessive sputteringby too-energetic metal ions can be avoided while the sp3/sp2 ratio can beadjusted. It is shown that the resistivity of the film can be tuned bythis species-selective bias. The principle can be extended tomultiple-material plasma sources and complex materials
Date:
October 5, 2006
Creator:
Anders, Andre; Pasaja, Nitisak; Sansongsiri, Sakon & Lim, SunnieH.N.
Object Type:
Article
System:
The UNT Digital Library
Stress Corrosion Cracking Model for High Level Radioactive-Waste Packages
A stress corrosion cracking (SCC) model has been adapted for performance prediction of high level radioactive-waste packages to be emplaced in the proposed Yucca Mountain repository. For waste packages of the proposed Yucca Mountain repository, the outer barrier material is the highly corrosion-resistant Alloy UNS-N06022 (Alloy 22), the environment is represented by aqueous brine films present on the surface of the waste package from dripping or deliquescence of soluble salts present in any surface deposits, and the tensile stress is principally from weld induced residual stress. SCC has historically been separated into ''initiation'' and ''propagation'' phases. Initiation of SCC will not occur on a smooth surface if the surface stress is below a threshold value defined as the threshold stress. Cracks can also initiate at and propagate from flaws (or defects) resulting from manufacturing processes (such as welding); or that develop from corrosion processes such as pitting or dissolution of inclusions. To account for crack propagation, the slip dissolution/film rupture (SDFR) model is adopted to provide mathematical formulae for prediction of the crack growth rate. Once the crack growth rate at an initiated SCC is determined, it can be used by the performance assessment to determine the time to through-wall …
Date:
October 5, 2004
Creator:
Andresen, P.; Gordon, G. & Lu, S.
Object Type:
Report
System:
The UNT Digital Library
Altus Times (Altus, Okla.), Vol. 105, No. 172, Ed. 1 Sunday, October 5, 2003
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 5, 2003
Creator:
Andrews, Mike
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 106, No. 160, Ed. 1 Tuesday, October 5, 2004
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 5, 2004
Creator:
Andrews, Mike
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Great Salt Plains State Park
Photograph of a scene during the pelican migration season, at the Great Salt Plains State Park.
Date:
October 5, 2000
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Great Salt Plains State Park
Photograph of a scene during the pelican migration season, at the Great Salt Plains State Park.
Date:
October 5, 2000
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Great Salt Plains State Park
Photograph of a scene during the pelican migration season, at the Great Salt Plains State Park.
Date:
October 5, 2000
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Great Salt Plains State Park
Photograph of a scene during the pelican migration season, at the Great Salt Plains State Park.
Date:
October 5, 2000
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Great Salt Plains State Park
Photograph of a scene during the pelican migration season, at the Great Salt Plains State Park.
Date:
October 5, 2000
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Great Salt Plains State Park
Photograph of a bird watching scene at the Great Salt Plains State Park.
Date:
October 5, 2000
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Great Salt Plains State Park
Photograph of a scene during the pelican migration season, at the Great Salt Plains State Park.
Date:
October 5, 2000
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Great Salt Plains State Park
Photograph of a bird watching scene at the Great Salt Plains State Park.
Date:
October 5, 2000
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Great Salt Plains State Park
Photograph of a scene during the pelican migration season, at the Great Salt Plains State Park.
Date:
October 5, 2000
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Great Salt Plains State Park
Photograph of a scene during the pelican migration season, at the Great Salt Plains State Park.
Date:
October 5, 2000
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Great Salt Plains State Park
Photograph of a scene during the pelican migration season, at the Great Salt Plains State Park.
Date:
October 5, 2000
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Great Salt Plains State Park
Photograph of a scene during the pelican migration season, at the Great Salt Plains State Park.
Date:
October 5, 2000
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Great Salt Plains State Park
Photograph of a scene during the pelican migration season, at the Great Salt Plains State Park.
Date:
October 5, 2000
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Great Salt Plains State Park
Photograph of a scene during the pelican migration season, at the Great Salt Plains State Park.
Date:
October 5, 2000
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Great Salt Plains State Park
Photograph of a scene during the pelican migration season, at the Great Salt Plains State Park.
Date:
October 5, 2000
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Great Salt Plains State Park
Photograph of a scene during the pelican migration season, at the Great Salt Plains State Park.
Date:
October 5, 2000
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Great Salt Plains State Park
Photograph of a scene during the pelican migration season, at the Great Salt Plains State Park.
Date:
October 5, 2000
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History