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Best Match Title Creator Date Created (Newest) Date Created (Oldest) Date Added (Newest) Date Added (Oldest)
Simultaneously time- and space-resolved spectroscopic characterization of laser-produced plasmas (open access)

Simultaneously time- and space-resolved spectroscopic characterization of laser-produced plasmas

The CHROMA laser facility at KMS Fusion has been used to irradiate a variety of microdot targets. These include aluminum dots and mixed bromine dots doped with K-shell (magnesium) emitters. Simultaneously time- and space-resolved K-shell and L-shell spectra have been measured and compared to dynamic model predictions. The electron density profiles are measured using holographic interferometry. Temperatures, densities, and ionization distributions are determined using K-shell and L-shell spectral techniques. Time and spatial gradients are resolved simultaneously using three diagnostics: a framing crystal x-ray spectrometer, an x-ray streaked crystal spectrometer with a spatial imaging slit, and a 4-frame holographic interferometer. Significant differences have been found between the interferometric and the model-dependent spectral measurements of plasma density. Predictions by new non-stationary L-shell models currently being developed are also presented. 14 refs., 10 figs.
Date: March 3, 1988
Creator: Charatis, G.; Young, B. K. F.; Busch, G. E.; Cerjan, C. J.; Goldstein, W. H.; Osterheld, A. L. et al.
Object Type: Article
System: The UNT Digital Library
Low-Cost Solar Array Project. Task I. Silicon material: investigation of the hydrogenation of SiCl/sub 4/. Fifth quarterly report (open access)

Low-Cost Solar Array Project. Task I. Silicon material: investigation of the hydrogenation of SiCl/sub 4/. Fifth quarterly report

Reaction kinetic measurements on the hydrochlorination of SiCl/sub 4/ and mg silicon metal in the presence of a copper catalyst were last reported as a function of reaction temperature, reactor pressure and H/sub 2//SiCl/sub 4/ ratio, 3 SiCl/sub 4/ + 2 H/sub 2/ + Si ..-->.. 4 SiHCl/sub 3/. The same reaction was repeated at a lower catalyst loading of 2 wt%. In the presence of 2 wt% cuprous chloride (based on silicon metal), the hydrochlorination reaction rate is doubled to give about the same performance as those obtained at a higher copper catalyst loading. The effect of particle size distribution of the mg silicon metal on the hydrochlorination reaction rate was studied. Reaction kinetic measurements were made on 150 x 400 mesh Si and on 32 x 65 mesh Si in addition to the standard 65 x 150 mesh Si used in previous studies. Results of these experiments show that the reaction rate is essentially independent of the silicon metal particle size. Thus, the reaction occuring on the Si metal surface is the rate-determining step. Mass transfer via diffusion of reactants and product is not rate-limiting. A plausible mechanism of the hydrochlorination reaction is discussed.
Date: July 3, 1980
Creator: Mui, J. Y. P.
Object Type: Report
System: The UNT Digital Library
Engineering of beam direct conversion for a 120-kV, 1-MW ion beam (open access)

Engineering of beam direct conversion for a 120-kV, 1-MW ion beam

Practical systems for beam direct conversion are required to recover the energy from ion beams at high efficiency and at very high beam power densities in the environment of a high-power, neutral-injection system. Such an experiment is now in progress using a 120-kV beam with a maximum total current of 20 A. After neutralization, the H/sup +/ component to be recovered will have a power of approximately 1 MW. A system testing these concepts has been designed and tested at 15 kV, 2 kW in preparation for the full-power tests. The engineering problems involved in the full-power tests affect electron suppression, gas pumping, voltage holding, diagnostics, and measurement conditions. Planning for future experiments at higher power includes the use of cryopumping and electron suppression by a magnetic field rather than by an electrostatic field. Beam direct conversion for large fusion experiments and reactors will save millions of dollars in the cost of power supplies and electricity and will dispose of the charged beam under conditions that may not be possible by other techniques.
Date: October 3, 1977
Creator: Barr, W. L.; Doggett, J. N.; Hamilton, G. W.; Kinney, J. D. & Moir, R. W.
Object Type: Article
System: The UNT Digital Library
In situ coal gasification progress on the experimental and calculational Coal Fracture Program, July--November 1974. [Goal of program is to develop physically meaningful model based on experimental data to be used in simulation coals for design of in situ coal gasification experiments] (open access)

In situ coal gasification progress on the experimental and calculational Coal Fracture Program, July--November 1974. [Goal of program is to develop physically meaningful model based on experimental data to be used in simulation coals for design of in situ coal gasification experiments]

None
Date: January 3, 1975
Creator: Larson, D. B.; Anderson, G. D.; Butkovich, T. R. & Hearst, J. R.
Object Type: Report
System: The UNT Digital Library
LOFT emergency core coolant thermal analysis Class I review (open access)

LOFT emergency core coolant thermal analysis Class I review

The LOFT Emergency Core Coolant Piping Thermal Analysis was checked to insure that the calculations made would conservatively satisfy the requirements in the LOFT technical specifications. Some of the boundary conditions used have not been shown to be conservative and require review and possible re-analysis. One of the thermal models used could not be clearly related to a specific part of the piping geometry and requires further explanation. The remainder of the models, the use of the SIMIR code and the other boundary conditions appear conservative and reflect normal thermal analysis methodology and practice. However, the use of constant, rather than temperature varying, thermal properties for some materials may introduce a slight error in these analyses.
Date: February 3, 1978
Creator: Kinnaman, T.L.
Object Type: Report
System: The UNT Digital Library
Propagation of a heavy ion beam in gas-filled reactor (open access)

Propagation of a heavy ion beam in gas-filled reactor

A heavy ion beam traversing a gas-filled reactor is stripped of its electrons along its path. The propagation of the stripping beam with possible associated instabilities has been investigated.
Date: November 3, 1977
Creator: Yu, S. S.; Buchanan, H. L.; Chambers, F. W. & Lee, E. P.
Object Type: Article
System: The UNT Digital Library
Comparison between calculation and measurement of energy deposited by 800 MeV protons (open access)

Comparison between calculation and measurement of energy deposited by 800 MeV protons

The High Energy Transport Code, HETC, was obtained from the Radiation Shielding Information Center (RSIC) at Oak Ridge National Laboratory and altered as necessary to run on a CDC 7600 using the LTSS software in use at LLNL. HETC was then used to obtain calculated estimates of energy deposited, for comparison with a series of benchmark experiments done by LLNL. These experiments used proton beams of various energies incident on well-defined composite targets in good geometry. In this report, two aspects of the comparison between calculated and experimental energy depositions from an 800 MeV proton beam are discussed. Both aspects involve the fact that workers at SAI had previously used their version of HETC to calculate this experiment and reported their comparison with the measured data. The first aspect addressed is that their calculated data and LLNL calculations do not agree, suggesting an error in the conversion process from the RSIC code. The second aspect is not independent of the first, but is of sufficient importance to merit separate emphasis. It is that the SAI calculations agree well with experiments at the detector plate located some distance from the shower plate, whereas the LLNL calculations show a clearcut discrepancy there …
Date: April 3, 1980
Creator: Loewe, W.E.
Object Type: Report
System: The UNT Digital Library
CAMAC serial highway interface for the LSI-11 (open access)

CAMAC serial highway interface for the LSI-11

A CAMAC Serial Highway Interface has been designed for the Local Control and Instrumentation System of the Mirror Fusion Test Facility. There are over 50 distinguishable systems in the facility, each of which consists of the LSI-11 computer, fiber optic communication links, and the CAMAC system. The LSI-11 computer includes a 32k memory, serial modem interface and the CAMAC Serial Highway Interface.
Date: April 3, 1980
Creator: Lau, N.H.
Object Type: Article
System: The UNT Digital Library
Defluoridation study for Boise geothermal water (open access)

Defluoridation study for Boise geothermal water

Methods of removing fluorides from water are reviewed and recommendations are made for treating geothermal water used by the Boise Geothermal Project, Boise, Idaho. The Boise geothermal water except for its high fluoride content would be high quality, suitable for primary drinking water. Fluoride ranges from about 15 to 25 mg/l in water from various wells in the Boise region where the Project plans to obtain hot water. Four techniques for removing fluorides from water have been studied extensively during the past 15 years or so. Electrodialysis and reverse osmosis are useful in reducing total dissolved solids from brackish water, but are nonspecific and are too expensive for treatment of the Boise geothermal water. Selective precipitation is a widely used technique for treating water, but would also prove expensive for the Boise geothermal water because of the relatively high solubility of fluoride salts and consequently high concentration (and cost) of precipitants required to reduce the fluorides to an acceptable level. Ion-exchange separation using activated alumina as the exchange medium appears to be the most promising technique and we recommend that some laboratory and pilot studies be conducted to establish suitability and operating boundaries.
Date: June 3, 1980
Creator: Rigdon, L.
Object Type: Report
System: The UNT Digital Library
Raft River condenser-tube examination (open access)

Raft River condenser-tube examination

In the program of development of a water treatment for the 5 MW Raft River power plants' carbon steel heat rejection system, four carbon steel tubes were analyzed in this batch. The results of visual and scanning electron microscope examination of the tubes are presented. (MHR)
Date: April 3, 1981
Creator: Suciu, D. F.
Object Type: Report
System: The UNT Digital Library
Downhole Steam Injector. [Patent Application] (open access)

Downhole Steam Injector. [Patent Application]

An improved downhole steam injector has an angled water orifice to swirl the water through the device for improved heat transfer before it is converted to steam. The injector also has a sloped diameter reduction in the steam chamber to throw water that collects along the side of the chamber during slant drilling into the flame for conversion to steam. In addition, the output of the flame chamber is beveled to reduce hot spots and increase efficiency, and the fuel-oxidant inputs are arranged to minimize coking.
Date: June 3, 1981
Creator: Donaldson, A. B. & Hoke, E.
Object Type: Patent
System: The UNT Digital Library
[News Clip: Lancaster] captions transcript

[News Clip: Lancaster]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: May 3, 1994, 5:00 p.m.
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[News Clip: Standerford] captions transcript

[News Clip: Standerford]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: January 3, 1994, 6:00 p.m.
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[News Clip: Kess relief] captions transcript

[News Clip: Kess relief]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: February 3, 1994, 5:00 p.m.
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[News Clip: Shooting/burglary] captions transcript

[News Clip: Shooting/burglary]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: March 3, 1994, 6:00 p.m.
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[News Clip: Historical] captions transcript

[News Clip: Historical]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: May 3, 1994, 6:00 p.m.
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[News Clip: Aylor] captions transcript

[News Clip: Aylor]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: August 3, 1994, 6:00 p.m.
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[News Clip: Espy] captions transcript

[News Clip: Espy]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: October 3, 1994, 10:00 p.m.
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
Near Term Hybrid Passenger Vehicle Development Program. Phase I, Final report. Appendix D: sensitivity analysis (open access)

Near Term Hybrid Passenger Vehicle Development Program. Phase I, Final report. Appendix D: sensitivity analysis

This report on the Sensitivity of Mission Analysis and Trade-off Studies provides an analysis of the sensitivity of the results of previous mission analysis and performance specification studies to the possible variations of the values of significant parameters as projected to the year 1985. These parameters include vehicle usage by purpose, driving cycles, trip lengths, ownership projections, and life-cycle costs. Tabulated data are included from calculations with variations in these parameters. (LCL)
Date: July 3, 1979
Creator: Traversi, M.
Object Type: Report
System: The UNT Digital Library
Radiation levels from fission products released to the pressure suppression tank (open access)

Radiation levels from fission products released to the pressure suppression tank

This LTR discusses radiation levels associated with a LOCE where the blowdown is directed to the pressure suppression tank.
Date: March 3, 1978
Creator: Maringas, N.
Object Type: Report
System: The UNT Digital Library
Neutron scattering analysis with microscopic optical model potentials (open access)

Neutron scattering analysis with microscopic optical model potentials

A review of microscopic optical model potentials used in the analysis of neutron scattering and analyzing power data below 100 MeV (5 {le}E{sub n}{le}100 MeV) is presented. The quality of the fits to the data over a wide massd ({sup 6}Li-{sup 239}Pu) and energy range is discussed. It is shown that reasonably good agreement with the data is obtained with only three parameters, {lambda}{sub V}, {lambda}{sub W}, and {lambda}{sub SO}, which show a smooth mass and energy dependence. These parameters are normalizing constants to the real (V), and imaginary (W) central potentials and the real spin-orbit (V{sub SO}) potential. 14 refs., 7 figs.
Date: September 3, 1991
Creator: Hansen, L. F.
Object Type: Article
System: The UNT Digital Library
Recent developments in the Virasoro master equation (open access)

Recent developments in the Virasoro master equation

The Virasoro master equation collects all possible Virasoro constructions which are quadratic in the currents of affine Lie g. The solution space of this system is immense, with generically irrational central charge, and solutions which have so far been observed are generically unitary. Other developments reviewed include the exact C-function, the superconformal master equation and partial classification of solutions by graph theory and generalized graph theories. 37 refs., 1 fig., 1 tab.
Date: September 3, 1991
Creator: Halpern, M.B.
Object Type: Article
System: The UNT Digital Library
Results from exploratory drill hole UE2ce, Northwest Yucca Flat, Nevada Test Site, near the NASH Event (open access)

Results from exploratory drill hole UE2ce, Northwest Yucca Flat, Nevada Test Site, near the NASH Event

Exploratory drill hole UE2ce was drilled in January 1977 to determine geologic and geophysical characteristics of this site. This report presents geophysical logs, lithology, geologic structure, water table measurements, and physical properties for this drill hole. The data are then extrapolated to the NASH site, an event in U2ce, 55.6 m due north of UE2ce.
Date: March 3, 1982
Creator: Pawloski, G.A.
Object Type: Report
System: The UNT Digital Library
Atomic data needs for beam transport in gas (open access)

Atomic data needs for beam transport in gas

Determination of the parameters Z/sub eff/, electrical conductivity, plasma density, and the plasma temperature is essential in the study of heavy ion beam transport in gas. The calculation of these parameters require input from atomic physics. This note is an attempt to make these needs known to atomic physicists.
Date: November 3, 1977
Creator: Yu, S. S.
Object Type: Article
System: The UNT Digital Library