Degree Department

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L-shell photoabsorption spectroscopy for solid metals: Ti, V, Cr, Fe, Ni, Cu (open access)

L-shell photoabsorption spectroscopy for solid metals: Ti, V, Cr, Fe, Ni, Cu

Synchrotron radiation measurements of near-threshold and broad-range (400--1500 eV) absolute photoabsorption cross sections were made for five transition metals with {plus minus}10% overall uncertainties. Fine structure details of 2p-3d autoionizing resonances are shown with better than 1.0 eV resolution for solid metals: Ti, V, Cr, Fe, Ni, and Cu. Fine structure similar to what we measured can be produced using a multi-configuration Dirac Fock (MCDF) model if a statistical distribution is assumed for the initial atomic states. Calculations were performed in intermediate coupling with configuration interactions by Mau H. Chen. The results are compared with other experimental work and theoretical methodologies. 18 refs., 7 figs.
Date: September 13, 1989
Creator: Del Grande, N.K. (Lawrence Livermore National Lab., CA (USA))
Object Type: Article
System: The UNT Digital Library

[Photograph 2012.201.B0121.0206]

Photograph used for a story in the Oklahoma Times newspaper. Caption: "Dawn Camp, right, serves punch to Cindy and David Fetter."
Date: September 13, 1983
Creator: unknown
Object Type: Photograph
System: The Gateway to Oklahoma History

Faculty Recital: 1989-09-13 - Jean Mainous, piano; Norma Davidson, violin

Access: Use of this item is restricted to the UNT Community
A faculty and guest artist recital performed at the UNT College of Music Recital Hall.
Date: September 13, 1989
Creator: Mainous, Jean & Davidson, Norma
Object Type: Sound
System: The UNT Digital Library

[Photograph 2012.201.B0102.0058]

Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "Sharing a pizza with Pi Beta Phi province president, Sally Bowers, center, are Oklahoma City alums Catherine Butler, left, and Millon Wilson."
Date: September 13, 1981
Creator: Wilson, George R.
Object Type: Photograph
System: The Gateway to Oklahoma History

[Photograph 2012.201.B0144.0383]

Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "Mr. and Mrs. Robert Coatright pose in a seating area in their master bedroom, which can be seen on the upcoming Crown Heights-Edgemere Home Tour."
Date: September 13, 1984
Creator: Southerland, Paul
Object Type: Photograph
System: The Gateway to Oklahoma History

[Photograph 2012.201.B0174.0377]

Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date: September 13, 1985
Creator: unknown
Object Type: Photograph
System: The Gateway to Oklahoma History

[Photograph 2012.201.B0151.0554]

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Browsing through the exhibit are Mrs. Jack Dahlgren , Betty Price and Jack Dahlgren , from left,...."
Date: September 13, 1985
Creator: Gooch, Steve
Object Type: Photograph
System: The Gateway to Oklahoma History

[Photograph 2012.201.B0146.0017]

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Monty Courtney, right, president of the Edmond Chamber of Commerce, and code enforcement officer Joe Felkner, left, talk with Edmond resident Iona Guilford about some of the city programs designed to residents."
Date: September 13, 1985
Creator: Hellstern, Paul
Object Type: Photograph
System: The Gateway to Oklahoma History

[Photograph 2012.201.B0171.0170]

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Jonathan Hoch shows his paintings to Nick Gutierrez an observer at the center."
Date: September 13, 1985
Creator: Argo, Jim
Object Type: Photograph
System: The Gateway to Oklahoma History

[Photograph 2012.201.B0142.0313]

Photograph used for a story in the Daily Oklahoman newspaper.
Date: September 13, 1985
Creator: unknown
Object Type: Photograph
System: The Gateway to Oklahoma History

[Photograph 2012.201.B0316B.0008]

Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date: September 13, 1984
Creator: Southerland, Paul
Object Type: Photograph
System: The Gateway to Oklahoma History

[Photograph 2012.201.B0309B.0053]

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Jay Brumfield (left), director of Alumni Affairs for the University of Kentucky, Ellen Braseltop and Bill Jackson, president of the Oklahoma Club of the University of Kentucky Alumni Association, catch up on university news."
Date: September 13, 1980
Creator: Grier, Bob
Object Type: Photograph
System: The Gateway to Oklahoma History

[Photograph 2012.201.B0338.0807]

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "At right, Libby Howell, Liz Mobely and Judy Hilliard pose by the cakes for the reunion."
Date: September 13, 1986
Creator: Wilson, George R.
Object Type: Photograph
System: The Gateway to Oklahoma History
Microwave Tokamak Experiment (MTX) ohmic heating system (open access)

Microwave Tokamak Experiment (MTX) ohmic heating system

The ohmic heating system for the Microwave Tokamak Experiment (MTX) at Lawrence Livermore National Laboratory (LLNL) provides both the voltage for the initial breakdown phase and the energy to drive the plasma current to a value of 400 kA or greater. Providing this voltage and flux swing requires a one-turn loop voltage of about 25 volts (11 kV across the coil) and a magnetic flux swing of 2 volt- seconds. This voltage and flux swing are accomplished by charging the ohmic heating coils to 20 kA, at which point the current is commutated off into a resistor generating the 11 kV across the coil. When the current passes through zero, another power supply drives the current in the opposite polarity to 20 kA, thus completing the full 2 volt-second flux swing. This paper describes the design features and performance of the ohmic heating circuit, with emphasis on the commutation circuit. In addition, the paper describes the use of the ohmic heating system for discharge cleaning and the changeover procedure. 3 refs., 4 figs., 1 tab.
Date: September 13, 1989
Creator: Jackson, M.C. (Lawrence Livermore National Lab., CA (USA))
Object Type: Article
System: The UNT Digital Library
Floating data acquisition system for microwave calorimeter measurements on MTX (open access)

Floating data acquisition system for microwave calorimeter measurements on MTX

A microwave calorimeter has been designed for making 140-GHz absorption measurements on the MTX. Measurement of the intensity and spatial distribution of the FEL-generated microwave beam on the inner wall will indicate the absorption characteristics of the plasma when heated with a 140 GHz FEL pulse. The calorimeter works by monitoring changes of temperature in silicon carbide tiles located on the inner wall of the tokamak. Thermistors are used to measure the temperature of each tile. The tiles are located inside the tokamak about 1 cm outside of the limiter radius at machine potential. The success of this measurement depends on our ability to float the data acquisition system near machine potential and isolate it from the rest of the vault ground system. Our data acquisition system has 48 channels of thermistor signal conditioning, a multiplexer and digitizer section, a serial data formatter, and a fiber-optic transmitter to send the data out. Additionally, we bring timing signals to the interface through optical fibers to tell it when to begin measurement, while maintaining isolation. The receiver is an HP 200 series computer with a serial data interface; the computer provides storage and local display for the shot temperature profile. Additionally, the …
Date: September 13, 1989
Creator: Sewall, N.R. & Meassick, S. (Lawrence Livermore National Lab., CA (USA))
Object Type: Article
System: The UNT Digital Library
Sensitivity and uncertainty investigations for Hiroshima dose estimates and the applicability of the Little Boy mockup measurements (open access)

Sensitivity and uncertainty investigations for Hiroshima dose estimates and the applicability of the Little Boy mockup measurements

This paper describes sources of uncertainty in the data used for calculating dose estimates for the Hiroshima explosion and details a methodology for systematically obtaining best estimates and reduced uncertainties for the radiation doses received. (ACR)
Date: September 13, 1983
Creator: Bartine, D. E. & Cacuci, D. G.
Object Type: Article
System: The UNT Digital Library

[Photograph 2012.201.B0305B.256]

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Martha Jones and Phyllis Jones attend the gathering."
Date: September 13, 1983
Creator: unknown
Object Type: Photograph
System: The Gateway to Oklahoma History

[Photograph 2012.201.B0335.0344]

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "At the reception are, from left, Dick Clements, Eleanor Kirkpatrick and Mary Clements."
Date: September 13, 1985
Creator: Gooch, Steve
Object Type: Photograph
System: The Gateway to Oklahoma History

[Photograph 2012.201.B0308B.0040]

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Gwen Janssen and her Siren Alert."
Date: September 13, 1981
Creator: unknown
Object Type: Photograph
System: The Gateway to Oklahoma History

[Photograph 2012.201.B0246.0139]

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Gail Haley"
Date: September 13, 1986
Creator: unknown
Object Type: Photograph
System: The Gateway to Oklahoma History

[Photograph 2012.201.B0259.0546]

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Looking south, the view from NW 56 Street Bridge shows work progressing on the West Bypass."
Date: September 13, 1985
Creator: Miller, Joe
Object Type: Photograph
System: The Gateway to Oklahoma History

[Photograph 2012.201.B0267.0946]

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Marjorie picks out her birthday present."
Date: September 13, 1984
Creator: Argo, Jim
Object Type: Photograph
System: The Gateway to Oklahoma History

[Photograph 2012.201.B0259.0544]

Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date: September 13, 1985
Creator: Miller, Joe
Object Type: Photograph
System: The Gateway to Oklahoma History

[Photograph 2012.201.B0325.0222]

Photograph used for a story in the Oklahoma Times newspaper. Caption: "Opening-day mistakes made footballs on the ground familiar sight at Stillwater and Norman."
Date: September 13, 1980
Creator: Hoke, Doug
Object Type: Photograph
System: The Gateway to Oklahoma History