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Exact calculations of nuclear-recoil energies from prompt gamma decays resulting from neutron capture (open access)

Exact calculations of nuclear-recoil energies from prompt gamma decays resulting from neutron capture

The results of an accurate determination of the recoil spectrum from (n, ..gamma..) reactions in molybdenum are presented. The recoil spectrum has been calculated from nuclear level structure data and measured branching ratios. Angular correlations between successive gammas have been accounted for using the standard theoretical techniques of Racah algebra and the density matrix formalism.
Date: July 20, 1981
Creator: Kinney, J.H.
Object Type: Report
System: The UNT Digital Library
Electrochemical photovoltaic cells/stabilization and optimization of II-VI semiconductors. First technical progress report, 15 April 1980-30 June 1980 (open access)

Electrochemical photovoltaic cells/stabilization and optimization of II-VI semiconductors. First technical progress report, 15 April 1980-30 June 1980

The overall goal of this program is to provide the basis for designing a practical electrochemical solar cell based on the II-VI compound semiconductors. Emphasis is on developing new electrolyte redox systems and electrode surface modifications which will stabilize the II-VI compounds against photodissolution without seriously degrading the long-term solar response. The bulk electrode material properties are also being optimized to provide the maximum solar conversion efficiency and greatest inherent electrode stability. Factors limiting the short circuit current of the n-CdSe/methanol/ferro-ferricyanide system to 17.5 mA/cm/sup 2/ have been identified. The principal limiting factor is apparently specific adsorption of hexacyanoferrate species on the electrode surface which occurs at higher redox couple concentrations and slows the overall charge transfer process. Ion pairing also occurs, resulting in a low mass transport rate (smaller diffusion coefficients and increased solution viscosity), and probably enhances the degree of specific adsorption. Improvements in the performance of this system will require mitigation of the interactions between the redox species and the electrode surface, e.g., via electrolytes with reduced ion-pairing tendencies or the use of electrode surface films. Photoelectrochemically generated polypyrrole films have been shown to protect CdX photoanodes from dissolution while permitting electron exchange with the electrolyte. Current …
Date: July 20, 1980
Creator: Noufi, R.; Tench, D. & Warren, L.
Object Type: Report
System: The UNT Digital Library
Current California legislative and regulatory activity impacting geothermal hydrothermal commercialization: monitoring report No. 3. Report No. 1023 (open access)

Current California legislative and regulatory activity impacting geothermal hydrothermal commercialization: monitoring report No. 3. Report No. 1023

The current legislative activity covers the following: federal funds, state financial incentives, air quality bills, transmission line access, state energy agency reorganization, and state energy taxes. Current regulatory activities of the California Energy Commission, and the Lake County Air Pollution Control District are reviewed. (MHR)
Date: July 20, 1980
Creator: unknown
Object Type: Report
System: The UNT Digital Library

[Photograph 2012.201.B0109.0196]

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Edmond trainer Jack Brooks"
Date: July 20, 1986
Creator: McDaniel, David
Object Type: Photograph
System: The Gateway to Oklahoma History
[Newspaper clipping: Academy students score high; funding falls short of mark] (open access)

[Newspaper clipping: Academy students score high; funding falls short of mark]

Photocopy of an article about students at the Texas Academy of Mathematics and Science, including information about the first class of students and the funding from the Texas Legislature.
Date: July 20, 1988
Creator: Schere, Julie
Object Type: Clipping
System: The UNT Digital Library
Board OKs TAMS expansion (open access)

Board OKs TAMS expansion

Article discussing the approved expansion of McConnell Hall, and the number of college and academy students who require campus housing.
Date: July 20, 1989
Creator: Hemby, Julie
Object Type: Clipping
System: The UNT Digital Library

[Photograph 2012.201.B0170.0466]

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Dr. David Dycus, chief of staff at Moore Municipal Hospital, checks an X-ray with his son, Dr. Scott Dycus."
Date: July 20, 1983
Creator: Albright, Bob
Object Type: Photograph
System: The Gateway to Oklahoma History

[Photograph 2012.201.B0156.0450]

Photograph used for a story in the Daily Oklahoman newspaper.
Date: July 20, 1985
Creator: Argo, Jim
Object Type: Photograph
System: The Gateway to Oklahoma History
Report from the polarization group of the Fermilab injector workshop (open access)

Report from the polarization group of the Fermilab injector workshop

The group considered physics, accelerator, and polarized source issues. Most of the physics study was concerned with what significant and unique experiments could be done if polarized protons could be accelerated in the main injector and eventually in the Tevatron. 12 refs., 4 figs.
Date: July 20, 1989
Creator: Berger, E.; Glass, G.; Imai, K.; Jones, L.; Lin, A.M.T.; Mane, S.R. et al.
Object Type: Article
System: The UNT Digital Library
Improved solvent extraction recovery of shale oil. [DOE patent application] (open access)

Improved solvent extraction recovery of shale oil. [DOE patent application]

An improved process for solvent extraction of organic matter from shale by two extraction steps in sequence. The extraction steps are: (1) treating a kerogen-containing shale with a solvent system comprising a combination of water and an alcohol at a temperature of about 375 to 425/sup 0/C; and (2) treating the product of (1) with a solvent system comprising a combination of an alcohol and another organic solvent at an elevated temperature, but not above about 425/sup 0/C. The organic matter is recovered by separating the liquid which results from step (2) from the shale solids.
Date: July 20, 1981
Creator: McKay, John F. & Chong, Shuang-Ling
Object Type: Patent
System: The UNT Digital Library
Perturbations to the horizontal off-energy functions in the arcs (open access)

Perturbations to the horizontal off-energy functions in the arcs

The perturbation of off-energy functions in the arcs affects the SLC performance in two ways. First of all, it introduces additional emittance blow-up in the arcs through synchrotron radiation loss. Secondly, if the perturbation is too large, the chromatic correction in the final focus cannot completely suppress the eta at IP resulting in a larger beam size. Both effects reduce the luminosity. In this report an analysis is made of the disturbances to the horizontal eta-function generated by imperfections in the arcs ad their effects are estimated.
Date: July 20, 1986
Creator: Sands, M. & Weng, W.
Object Type: Report
System: The UNT Digital Library
Shock-wave studies: modeling the giant planets (open access)

Shock-wave studies: modeling the giant planets

The giant planets - Jupiter, Saturn, Uranus, and Neptune - differ markedly from the inner, or terrestrial, planets. Observations of their average density, gravitational moments, and atmospheric composition have enabled astrophysicists to draw some conclusions as to their structure, but efforts have been hampered by a lack of accurate data on the chemical, physical, and thermodynamic properties of constituent materials at the extremely high temperatures and pressures characteristic of planetary interiors. Shock-wave experiments conducted recently at LLNL have provided more accurate equations of state and electrical conductivities for many of these materials, and these have led to improved structural models of the giant planets.
Date: July 20, 1981
Creator: Ross, M.
Object Type: Article
System: The UNT Digital Library
Materials accounting at Los Alamos National Laboratory (open access)

Materials accounting at Los Alamos National Laboratory

The materials accounting system at Los Alamos has evolved from an ''80-column'' card system to a very sophisticated near-real-time computerized nuclear material accountability and safeguards system (MASS). The present hardware was designed and acquired in the late 70's and is scheduled for a major upgrade in fiscal year 1986. The history of the system from 1950 through the DYMAC of the late 70's up to the present will be discussed. The philosophy of the system along with the details of the system will be covered. This system has addressed the integrated problems of management, control, and accounting of nuclear material successfully. 8 refs., 3 figs., 1 tab.
Date: July 20, 1985
Creator: Roberts, N. J.; Erkkila, B. H. & Kelso, H. F.
Object Type: Article
System: The UNT Digital Library
Projections for a steady-state tokamak reactor based on ITER (open access)

Projections for a steady-state tokamak reactor based on ITER

The extensions of the physics and engineering guidelines for the ITER device needed for acceptable operating points for a steady-state tokamak power reactor are examined. Non-inductive current drive is provided in steady state by high-energy neutral-beam injection in the plasma core, lower-hybrid slow waves in the outer regions of the plasma and (30%) bootstrap current. Three different levels of extension of the ITER physics/engineering guide-lines, with differing assumptions on the possible plasma beta, elongation and aspect ratio, are considered for power-reactor applications. Plasma gain, Q/sub p/ = fusion power/input power, in excess of 20 and average neutron wall fluxes from 2.3 to 3.6 MW/m/sup 2/ are predicted in devices with major radii varying from 7.0 to 6.0 m and aspect ratios from 2.9 to 4. 3. Peak divertor heat fluxes range up to 12.2 MW/m/sup 2/ which is somewhat higher than the current ITER design limit of 10 MW/m/sup 2/ with a magnetically swept divertor. These designs were selected on the basis of improvements in physics/engineering consistent with time scales for development of future reactors. The design re-optimization on the basis of cost-of-electricity (COE) was then examined using a reactor systems model. This analysis generally verified the original estimates for …
Date: July 20, 1989
Creator: Devoto, R. S.; Barr, W. L.; Bulmer, R. H.; Campbell, R. B.; Fenstermacher, M. E.; Lee, J. D. et al.
Object Type: Report
System: The UNT Digital Library

[Photograph 2012.201.B0353.0282]

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Water, water everywhere, and all the boards did shrink' -- excpet for the surf boards with sails attached."
Date: July 20, 1981
Creator: Beuhner, Jeff
Object Type: Photograph
System: The Gateway to Oklahoma History

[Photograph 2012.201.B0259.0452]

Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date: July 20, 1987
Creator: unknown
Object Type: Photograph
System: The Gateway to Oklahoma History

[Photograph 2012.201.B0245.1034]

Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date: July 20, 1982
Creator: unknown
Object Type: Photograph
System: The Gateway to Oklahoma History

[Photograph 2012.201.B0255.0522]

Photograph used for a story in the Oklahoma Times newspaper. Caption: "Workers will renew their efforts Tuesday to airlift eight two-ton air conditioning units to the Penn Square Center roof after several efforts like this one this morning fell short because hot, humid air decreased the helicopter's lifting capability."
Date: July 20, 1981
Creator: Klock, Roger
Object Type: Photograph
System: The Gateway to Oklahoma History

[Photograph 2012.201.B0245.0637]

Photograph used for a story in the Daily Oklahoman newspaper.
Date: July 20, 1983
Creator: Howell, Paul S.
Object Type: Photograph
System: The Gateway to Oklahoma History

[Photograph 2012.201.B0270.0612]

Photograph used for a story in the Oklahoma Times newspaper. Caption: "The general store also has a second-floor ice cream parlor."
Date: July 20, 1982
Creator: Klock, Roger
Object Type: Photograph
System: The Gateway to Oklahoma History

[Photograph 2012.201.B0259.0454]

Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date: July 20, 1987
Creator: unknown
Object Type: Photograph
System: The Gateway to Oklahoma History

[Photograph 2012.201.B0250.0235]

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "By a replica of I'Arc do Triomphe in Paris waiting to greet guests to the Soiree Dansante are Alyse Harrison, Leslie Mankin and Ashley Tway."
Date: July 20, 1982
Creator: McDaniel, David
Object Type: Photograph
System: The Gateway to Oklahoma History

[Photograph 2012.201.B0254.0390]

Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "Sean Heath leans into his follow-through Monday."
Date: July 20, 1987
Creator: Beckel, Jim
Object Type: Photograph
System: The Gateway to Oklahoma History

[Photograph 2012.201.B0245.0585]

Photograph used for a story in the Daily Oklahoman newspaper.
Date: July 20, 1983
Creator: Argo, Jim
Object Type: Photograph
System: The Gateway to Oklahoma History