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7,249 Matching Results
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Development of superconductors for applications in high-field, high-current-density magnets for fusion research
The development of large-bore, high-field magnets for fusion energy applications requires a system approach to both magnet and conductor design. At Lawrence Livermore National Laboratory (LLNL), the criteria used to choose superconductors include: strain tolerance, radiation tolerance, heat removal, stability, fabricability, and cost. We report on the performance of industrially produced, prototype, Ti-modified Nb/sub 3/Sn wires developed with LLNL support. Wire performance characteristics evaluated include critical current as a function of magnetic field, temperature, and applied strain. Tests were performed to determine how this performance translates to the performance of a cable-in-conduit conductor system using this wire. An alternative to Nb/sub 3/Sn superconductors is NbN, which is strain and radiation insensitive. We report preliminary efforts to produce multifilamentary NbN conductors by liquid-metal infiltration of NbN-coated, high-strength fibers. In addition, we discuss the fabrication of multifilamentary NbN conductors and their possible impact on magnet design.
Date:
September 26, 1986
Creator:
Summers, L. T. & Miller, J. R.
Object Type:
Article
System:
The UNT Digital Library
Exploding pusher targets for the SHIVA laser system
The first targets for the 20 TW SHIVA laser system were designed. They are simple glass micro-balloons, approximately 300 ..mu..m in diameter and 2 ..mu..m thick, filled with D-T gas. Using LASNEX, whose model physics was utilized successfully for ARGUS targets, we optimize for both gain and yield. The target behaves as an exploding pusher. Different simple analytic models for the physics of this mode are presented, and are tested by comparing their scaling predictions, at constant absorbed power, with those demonstrated by LASNEX. Emphasis is placed on successful prediction of the basic quantities of peak ion temperature and compression, rather than neutron yield or n tau.
Date:
September 26, 1977
Creator:
Rosen, M. D.; Larsen, J. T. & Nuckolls, J. H.
Object Type:
Article
System:
The UNT Digital Library
The q q meson states with J sup PC = 2 sup ++ and 0 sup ++
The lowest mesons made up of a light quark and a strange quark produced from a K beam show a good agreement with expectations of the quark model. This good agreement leads to the prediction of the light isoscalar and isovector states and the isoscalar s{bar s} states. Except for one mystery The X(1590) the 2{sup ++} states seems to be well described by the expected ideally mixed q{bar q} states up to 2. 0 GeV. Above 2.0 GeV a new degree of freedom seems to be excited with respect to the breakdown of the OZI rule in production of 2{sup ++} resonances that decay into {phi}{phi}. This is to be contrasted with the situation for the O{sup ++} isoscalar states which seems to show a new degree of freedom for its mesons in its ground state. One might conclude that since the O{sup ++} glueball is predicted by lattice calculations to be degenerate with the s{bar s} O{sup ++} meson, that the very unusual assortment of isoscalar O{sup ++} mesons are due to glueball mixing.
Date:
September 26, 1991
Creator:
Longacre, R. S.
Object Type:
Article
System:
The UNT Digital Library
Numerical study of boundary layer injection as a scale control method
A boundary layer injection method of controlling scale-buildup in geothermal two-phase flow nozzles is studied. The object of this study is to set an upper limit on the ratio of the injected mass flow rate to the free stream mass flow rate that is necessary to isolate the scale carrying free stream flow from the nozzle wall. In order to develop a numerical model of the boundary layer flow, assumptions are made which reduce the results to order of magnitude approximations. Two configurations of nozzles with various injection flow rates are tried. It is found by numerical experiment that a nozzle with injection through a 1 mm thick ring near the inlet, is more efficient at isolating the free stream than a porous nozzle. A mass flow rate ratio of 0.173% was necessary to achieve this effect. It may be concluded that an upper limit on the mass flow rate ratio is about 2.0% with injection through a ring near the inlet, and that boundary layer injection is a reasonable method of controlling scale-buildup. A glossary of variables, program documentation and listings are presented for programs GMD15SR8, TRACK11, and TRACK12.
Date:
September 26, 1975
Creator:
Feiereisen, W.
Object Type:
Report
System:
The UNT Digital Library
Requirements for a Network Storage Service in a supercomputer environment
Sandia National Laboratories has completed a requirements study for a networked mass storage system. The areas of user functionality, network connectivity, and performance were analyzed to determine specifications for a Network Storage Service to operate in supercomputer environment. 4 refs.
Date:
September 26, 1991
Creator:
Kelly, S.M.
Object Type:
Article
System:
The UNT Digital Library
Expansion potential for existing nuclear power station sites
This report is a preliminary analysis of the expansion potential of the existing nuclear power sites, in particular their potential for development into nuclear energy centers (NECs) of 10 (GW(e) or greater. The analysis is based primarily on matching the most important physical characteristics of a site against the dominating site criteria. Sites reviewed consist mainly of those in the 1974 through 1976 ERDA Nuclear Power Stations listings without regard to the present status of reactor construction plans. Also a small number of potential NEC sites that are not associated with existing power stations were reviewed. Each site was categorized in terms of its potential as: a dispersed site of 5 GW(e) or less; a mini-NEC of 5 to 10 GW(e); NECs of 10 to 20 GW(e); and large NECs of more than 20 GW(e). The sites were categorized on their ultimate potential without regard to political considerations that might restrain their development. The analysis indicates that nearly 40 percent of existing sites have potential for expansion to nuclear energy centers.
Date:
September 26, 1977
Creator:
Cope, D. F. & Bauman, H. F.
Object Type:
Report
System:
The UNT Digital Library
A microwiggler Free-Electron Laser at the Brookhaven Accelerator Test Facility
We report the design and status of an FEL experiment at the Brookhaven National Laboratory Accelerator Test Facility. A 50 MeV high brightness electron beam will be utilized for an oscillator experiment in the visible wavelength region. The microwiggler to be used is a superferric planar undulator with a 0.88 cm period, 60 cm length and K = 0.35. The optical cavity is a 368 cm long stable resonator with broadband dielectric coated mirrors. 8 refs., 2 figs., 4 tabs.
Date:
September 26, 1989
Creator:
Batchelor, K.; Ben-Zvi, Ilan; Fernow, R.; Gallardo, J.; Kirk, H.; Pellegrini, C. et al.
Object Type:
Report
System:
The UNT Digital Library
Monthly energy review, September 1991. [Contains glossary]
This publication presents current data on production, consumption, stocks, imports, exports, and prices of the principal energy commodities in the United States. Also included are data on international production of crude oil, consumption of petroleum products, petroleum stocks, and production of electricity from nuclear-powered facilities. 36 figs., 57 tabs.
Date:
September 26, 1991
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
[News Clip: Missing teen VOSOT]
B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
September 26, 1994, 5:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Healthcare]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
September 26, 1994, 10:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
The Oklahoma Leader (Guthrie, Okla.), Vol. 28, No. 36, Ed. 1 Thursday, September 26, 1918
Weekly newspaper from Guthrie, Oklahoma that includes local, state, and national news along with advertising.
Date:
September 26, 1918
Creator:
Niblack, Leslie G.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Oklahoma State Register (Guthrie, Okla.), Vol. 28, No. 23, Ed. 1 Thursday, September 26, 1918
Weekly newspaper from Guthrie, Oklahoma that includes local, state, and national news along with advertising.
Date:
September 26, 1918
Creator:
Golobie, John
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Mangum Star. (Mangum, Okla. Terr.), Vol. 20, No. 13, Ed. 1 Thursday, September 26, 1907
Weekly newspaper from Mangum, Oklahoma that includes local, territorial, and national news along with advertising.
Date:
September 26, 1907
Creator:
Echols, R. C.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Mangum Star. (Mangum, Okla.), Vol. 13, No. 12, Ed. 1 Wednesday, September 26, 1900
Weekly newspaper from Mangum, Oklahoma that includes local, territorial, and national news along with advertising.
Date:
September 26, 1900
Creator:
Townsend, G. B.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Mangum Star And Southwest Eagle (Mangum, Okla.), Vol. 31, No. 15, Ed. 1 Thursday, September 26, 1918
Weekly newspaper from Mangum, Oklahoma that includes local, state, and national news along with advertising.
Date:
September 26, 1918
Creator:
Jessee, Elmer V.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Weekly Oklahoma State Capital. (Guthrie, Okla.), Vol. 8, No. 23, Ed. 1 Saturday, September 26, 1896
Weekly newspaper from Guthrie, Oklahoma Territory that includes local, territorial, and national news along with advertising.
Date:
September 26, 1896
Creator:
Greer, Frank H.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Taloga Times. (Taloga, Okla.), Vol. 16, No. 10, Ed. 1 Thursday, September 26, 1912
Weekly newspaper from Taloga, Oklahoma that includes local, state, and national news along with advertising.
Date:
September 26, 1912
Creator:
Dasher, Arthur J.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Kiowa Sentinel. (Kiowa, Indian Terr.), Vol. 4, No. 37, Ed. 1 Thursday, September 26, 1907
Weekly newspaper from Kiowa, Indian Territory that includes local, territorial, and national news along with advertising.
Date:
September 26, 1907
Creator:
Vernon, John C.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Crowder City Guardian (Crowder, Oklahoma), Vol. 9, No. 1, Ed. 1 Friday, September 26, 1913
Weekly newspaper from Crowder, Oklahoma that includes local, state, and national news along with advertising.
Date:
September 26, 1913
Creator:
Barrow, A. E.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Altus Weekly News (Altus, Okla.), Vol. 19, No. 31, Ed. 1 Thursday, September 26, 1918
Weekly newspaper from Altus, Oklahoma that includes local, county, state, and national news along with advertising.
Date:
September 26, 1918
Creator:
Orr, J. P.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Cushing Independent. (Cushing, Okla.), Vol. 6, No. 42, Ed. 1 Thursday, September 26, 1907
Weekly newspaper from Cushing, Oklahoma Territory that includes local, territorial, and national news along with advertising.
Date:
September 26, 1907
Creator:
Holland, Al. H.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Sentinel Leader. (Sentinel, Okla.), Vol. 10, No. 9, Ed. 1 Friday, September 26, 1913
Weekly newspaper from Sentinel, Oklahoma that includes local, state, and national news along with advertising.
Date:
September 26, 1913
Creator:
Forster, Warren D.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Crowder City Guardian (Crowder, Indian Terr.), Vol. 2, No. 42, Ed. 1 Thursday, September 26, 1907
Weekly newspaper from Crowder, Indian Territory that includes local, territorial, and national news along with advertising.
Date:
September 26, 1907
Creator:
Barrow, A. E.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Guymon Herald. (Guymon, Okla.), Vol. 22, No. 29, Ed. 1 Thursday, September 26, 1912
Weekly newspaper from Guymon, Oklahoma that includes local, state, and national news along with advertising.
Date:
September 26, 1912
Creator:
Zimmerman, Warren
Object Type:
Newspaper
System:
The Gateway to Oklahoma History