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RADIOISOTOPE AND RADIATION APPLICATIONS. Quarterly Progress Report
The study of the mechanism of free-radical formation and decay in polymeric materials was continued and extended to include an investigation of the potential application of this information to the development of novel graft copolymers. The study of postirradiation grafting techniques employing both peroxide initiation and direct grafting was continued. In addition, the effect of molecular weight on site formation was further investigated. Licenses and license applications for approximately 300 by-product material licenses were reviewed to obtain information on environmental conditions of source usage. The feasibility of testing sealed-source response to normal environments by accelerated test procedures was studied. Indications are that the approach will probably not be applicable to either vibration or abrasion stresses but may be for corrosion stresses. (auth)
Date:
October 18, 1962
Creator:
Sunderman, D.N., ed.
Object Type:
Report
System:
The UNT Digital Library
[News Script: Drop appeals]
Script from the WBAP-TV/NBC station in Fort Worth, Texas relating a news story.
Date:
October 18, 1968
Creator:
WBAP-TV (Television station : Fort Worth, Tex.)
Object Type:
Script
System:
The UNT Digital Library
[Letter from Cassandra Broadus to Pam Pedigo, October 18, 1990]
Photocopy of a letter from Cassandra Broadus, North Texas Institute for Educators on the Visual Arts, to Pam Pedigo, Pilot Point Elementary School. In regards to Pedigo and the other fourth grade teachers on their Persian Miniature and Islamic art display in the school's foyer. Broadus writes that when she visited the school the past Wednesday, Sylvia Russel shared Pedigo's Mid-East unit and how art was included into the study. NTIEVA will be working with PPISD for the next five years and Broadus wants Pedigo to be apart of the program to help teachers integrate visual arts.
Date:
October 18, 1990
Creator:
Broadus, Cassandra
Object Type:
Letter
System:
The UNT Digital Library
An Algol Compiler for the Control Data Corporation 1604. Progress Report No. 2
A summary of the progress on development of the ALGOL compiler for the Control Data Corporation 1604 Computer is presented. This computer is based on machine-independent specifications developed at ORNL. A brief description of the structure of the compiler is included along with discussions concerning language restrictions, the hardware language representation, and the required equipment configuration. An example illustrates the generated program instructions. (auth)
Date:
October 18, 1962
Creator:
Bumgarner, L. L.; Grau, A. A.; Lietzke, M. P.; Stueland, R. G. & Wolf, K. A.
Object Type:
Report
System:
The UNT Digital Library
Buildup of Fission Products in Reactor Fuel and Coolant With 'Unclad' Fuel Material
Concentrations of fission products in the fuel and in the coolant stream of a generalized reactor power plant employing unclad fuel material were calculated using actual fission-product chains and wide ranges of assumed values of escape rate from the fuel and removal rate from the coolant stream. The calculations were made on an IBM 704 digital computer. Some typical results are displayed in the form of graphs to illustrate the effects of the variables. As data on escape rates from fuel and removal rates from coolant become available, the tables and graphs developed by this study can be used to estimate the fissionproduct concentration in the coolant stream, which would in turn furnish a basis for determining the degree of coolant purification required to maintain the circulating activity below a given level. (auth)
Date:
October 18, 1961
Creator:
Cottrell, W. B. & Mann, L. A.
Object Type:
Report
System:
The UNT Digital Library
[News Clip: Court shooting]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
October 18, 1994, 12:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
Uranium production in thorium/denatured uranium fueled PWRs
Uranium-232 buildup in a thorium/denatured uranium fueled pressurized water reactor, PWR(Th), was studied using a modified version of the spectrum-dependent zero dimensional depletion code, LEOPARD. The generic Combustion Engineering System 80 reactor design was selected as the reactor model for the calculations. Reactors fueled with either enriched natural uranium and self-generated recycled uranium or uranium from a thorium breeder and self-generated recycled uranium were considered. For enriched natural uranium, concentrations of /sup 232/U varied from about 135 ppM (/sup 232/U/U weight basis) in the zeroth generation to about 260 ppM (/sup 232/U/U weight basis) at the end of the fifth generation. For the case in which thorium breeder fuel (with its relatively high /sup 232/U concentration) was used as reactor makeup fuel, concentrations of /sup 232/U varied from 441 ppM (/sup 232/U/U weight basis) at discharge from the first generation to about 512 ppM (/sup 232/U/U weight basis) at the end of the fifth generation. Concentrations in freshly fabricated fuel for this later case were 20 to 35% higher than the discharge concentration. These concentrations are low when compared to those of other thorium fueled reactor types (HTGR and MSBR) because of the relatively high /sup 238/U concentration added to …
Date:
October 18, 1977
Creator:
Arthur, W.B.
Object Type:
Report
System:
The UNT Digital Library
Fast optical shutters for Nova, a high power fusion laser
Preliminary design and performance test results for fast optical shutters intended for use in the Nova high power fusion laser system are briefly described. Both an opening shutter to protect the pellet target from amplified spontaneous emission (ASE), and a closing shutter to protect the laser from light reflected back from the target are discussed. Faraday rotators, synchronized by a 400 Hz oscillator, provide an opening shutter mechanism with an opening time of approximately 10 ..mu..s. A plasma closing shutter, employing electrical sublimation of a foil, provide a shutter closing time of 70 ns +- 20 ns. Energy for foil sublimation is provided by discharge of a 42 J capacitor bank. Implementation of these shutter techniques in the Nova system is anticipated to improve laser output power and efficiency. (RME)
Date:
October 18, 1977
Creator:
Bradley, L. P.; Gagnon, W. L. & Carder, B. M.
Object Type:
Article
System:
The UNT Digital Library
25 megajoule energy storage and delivery system for the Shiva laser
A 25 megajoule, 20 kV capacitive energy storage and delivery system has been built and tested for Shiva--a 20 arm, 10 kJ, 20 TW neodymium glass fusion research laser. This system supplies over 3.5 megamperes to xenon flashlamps for optical pumping of the laser amplifier. About 15% of the energy is used to establish magnetic fields within Faraday rotator glass. A digital based control and diagnostics scheme is employed through the entire pulse power system. This scheme utilizes a distributed digital data bus that addresses every element through two levels of optical isolation. The interfacing of low level digital circuitry to a pulse power environment is discussed, as well as the design and performance of the total system. Cost and manufacturing details are important in a project of this size. The projected cost goal of 27 cents/joule, installed and operating, has been met. The general approach to the design, transient analysis, manufacture, and activation of this large power conditioning system is also discussed.
Date:
October 18, 1977
Creator:
Gagnon, W.L.; Rupert, P. R.; Berkbigler, L.; Carder, B. M.; Gritton, D. G.; Holloway, R. W. et al.
Object Type:
Article
System:
The UNT Digital Library
Report of Working Group on Accelerator Problems
There are many experimental elementary particle objectives which are uniquely achievable with polarized proton beams. These objectives require both higher beam energies and intensities than are presently available. The polarized ion source working group concluded that it looks quite practical to produce polarized H sources with output currents of several mA. The significance of this is best demonstrated by the fact that the ZGS operates at its space charge limit using a 6 mA H/sup -/ impolarized ion source and charge exchanger injection. Thus, polarized H/sup -/ ions offer the possibility of operating high energy synchrotrons at their ''normal'' intensity. With interesting physics to be done and the high probability of adequate intensities for both fixed target and colliding beam machines, the question to be answered is whether or not it is possible to accelerate polarized protons and/or deuterons to energies above the presently available 12 GeV/c of the ZGS and to store beams in a colliding beam machine such as the ISR or ISABELLE. This question was considered by the accelerator physics working group, and the conclusions reached are discussed.
Date:
October 18, 1977
Creator:
Cho, Y.; Montague, B. W.; Kubischta, W.; Turrin, A.; Courant, E. D. & Ratner, L.
Object Type:
Article
System:
The UNT Digital Library
Design and test of a 40-kV, 80-A, 10-msec, neutral-beam power supply series
To meet neutral-beam source requirements, a combination series switch/regulator system has been developed that can provide up to 40-kV at 80A output for 10-ms from the continuously decaying voltage of a charged capacitor bank. The system uses 100% feedback control of a series hard tube regulator. This feedback regulator is able to maintain a 40-kV output level for 100% load variations while the source voltage for the capacitor bank is drained from an initial 55-kV down to as low as 43-kV during a 10-ms pulse. In addition to controlling the output voltage, the series regulator tube also serves the dual role of a disconnect or interrupt switch at the end of each pulse and during the frequent occurrence of a neutral-beam source fault. In the interrupt mode, complete disconnect is achieved in less than 2-..mu..s after first observance of a fault condition; recovery times to normal operation of less than 10-..mu..s after fault clearance can be attained if desired.
Date:
October 18, 1977
Creator:
North, G.G.
Object Type:
Article
System:
The UNT Digital Library
ORINC: a one-dimensional implicit approach to the inverse heat conduction problem. [PWR]
The report develops an implicit solution technique to determine both the transient surface temperature and the transient surface heat flux of electrically heated rods given the power input and an ''indicated'' internal temperature during a simulated loss-of-coolant accident. A digital computer program ORINC (ORNL Inverse Code) is developed which solves a one-dimensional, transient, lumped parameter, implicit formulation of the conduction equation at each bundle thermocouple position in the Thermal-Hydraulic Test Facility (THTF).
Date:
October 18, 1977
Creator:
Ott, L. J. & Hedrick, R. A.
Object Type:
Report
System:
The UNT Digital Library
Structure of solid surfaces and of adsorbates by low-energy electron diffraction
LEED theory has developed to the point where the diffraction beam intensities can be computed using the locations of the surface atoms as the only adjustable parameters. The position of atoms in many clean monatomic solid surfaces and the surface structures of ordered monolayers of adsorbed atoms have been determined this way. Surface crystallography studies are now extended to small hydrocarbon molecules that are adsorbed on metal surfaces. These studies are reviewed. (GHT)
Date:
October 18, 1977
Creator:
Somorjai, G.A.
Object Type:
Article
System:
The UNT Digital Library
Effects of flow on density profiles in laser irradiated plasmas
When the plasma outflow velocity relative to the critical surface is supersonic, compressional density profiles can form in the critical region. These compressions involve dissipative processes like those in collisionless shocks; associated plasma instabilities and reflected ions may inhibit energy transport and enhance laser light absorption.
Date:
October 18, 1977
Creator:
Max, C.E. & McKee, C.F.
Object Type:
Article
System:
The UNT Digital Library
The Mangum Star (Mangum, Okla.), Vol. 30, No. 18, Ed. 1 Thursday, October 18, 1917
Weekly newspaper from Mangum, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 18, 1917
Creator:
Jessee, Elmer V.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Oklahoma Leader (Guthrie, Okla.), Vol. 27, No. 44, Ed. 1 Thursday, October 18, 1917
Weekly newspaper from Guthrie, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 18, 1917
Creator:
Niblack, Leslie G.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Oklahoma State Register (Guthrie, Okla.), Vol. 27, No. 23, Ed. 1 Thursday, October 18, 1917
Weekly newspaper from Guthrie, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 18, 1917
Creator:
Golobie, John
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Mangum Star. (Mangum, Okla. Terr.), Vol. 19, No. 16, Ed. 1 Thursday, October 18, 1906
Weekly newspaper from Mangum, Oklahoma that includes local, territorial, and national news along with advertising.
Date:
October 18, 1906
Creator:
Echols, R. C.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Taloga Times-Advocate (Taloga, Okla.), Vol. 30, No. 19, Ed. 1 Thursday, October 18, 1923
Weekly newspaper from Taloga, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 18, 1923
Creator:
unknown
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Guthrie Daily Star (Guthrie, Okla.), Vol. 9, No. 191, Ed. 1 Friday, October 18, 1912
Daily newspaper from Guthrie, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 18, 1912
Creator:
Hornaday, W. H.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Cushing Independent (Cushing, Okla.), Vol. 22, No. 9, Ed. 1 Thursday, October 18, 1917
Weekly newspaper from Cushing, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 18, 1917
Creator:
unknown
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Altus Weekly News. (Altus, Okla.), Vol. 19, No. 34, Ed. 1 Thursday, October 18, 1917
Weekly newspaper from Altus, Oklahoma that includes local, county, state, and national news along with advertising.
Date:
October 18, 1917
Creator:
Orr, J. P.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Canadian Enterprise (Canadian, Indian Terr.), Vol. 4, No. 4, Ed. 1 Friday, October 18, 1907
Weekly newspaper from Canadian, Indian Territory that includes local, territorial, and national news along with advertising.
Date:
October 18, 1907
Creator:
Williams, B. W.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Marshall County Democrat. (Madill, Indian Terr.), Vol. 2, No. 5, Ed. 1 Friday, October 18, 1907
Weekly newspaper from Madill, Chickasaw Nation, Indian Territory that includes local, territorial, and national news along with advertising.
Date:
October 18, 1907
Creator:
Draper, W. G. & Looney, Joseph L.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History