States

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
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
Status of TMX upgrade diagnostics construction (open access)

Status of TMX upgrade diagnostics construction

This report describes the status of the initial TMX Upgrade diagnostics and the state of development of additional diagnostics being prepared for later TMX Upgrade experiments. The initial diagnostic instrument set has been described in the TMX Upgrade Proposal. This set is required to get TMX Upgrade operational and to evaluate its initial performance. Additional diagnostic instruments are needed to then carry out the more detailed experiments outlined by the TMX Upgrade program milestones. The relation of these new measurements to the physics program is described in The TMX Upgrade Program Plan.
Date: July 20, 1981
Creator: Hornady, R. S.; Davis, J. C. & Simonen, T. C.
Object Type: Report
System: The UNT Digital Library
Advanced Selenide Thermoelectric Development Program. Final Report (open access)

Advanced Selenide Thermoelectric Development Program. Final Report

The primary objective of this work was to demonstrate that copper silver selenide and TAGS could be segmented. The hot junction temperature was planned to be 725/sup 0/C with the segmentation temperature at 400/sup 0/C, both temperatures were selected to prevent excessive sublimation from the hot ends of the segments, respectively. The program was planned as a cooperative effort between General Atomic company and Teledyne Energy Systems. Accordingly, General Atomic synthesized the CuAgSe that was used to fabricate the test hardware that was ultimately delivered to General Atomic for testing. Both the CuAgSe and TAGS were hot pressed in an argon atmosphere then the segments were furnace-bonded to each other. A secondary objective was to produce CuAgSe powder by rapid solidification.
Date: July 20, 1981
Creator: Seetoo, W. R.
Object Type: Report
System: The UNT Digital Library
Solar still. Final report (open access)

Solar still. Final report

Passive solar heating was used in a still in which a packed column packed with popped popcorn separates the alcohol and water vapors. The still's performance was not satisfactory, and it is concluded that passive solar heating could have been better used to preheat makeup water for the fermentation process and to maintain proper fermentation temperatures during the winter. (LEW)
Date: July 20, 1983
Creator: Adams, W.D.
Object Type: Report
System: The UNT Digital Library
Time-dependent field equations for paraxial relativistic electron beams: Beam Research Program (open access)

Time-dependent field equations for paraxial relativistic electron beams: Beam Research Program

A simplified set of field equations for a paraxial relativistic electron beam is presented. These equations for the beam electrostatic potential phi and pinch potential Phi identical to A/sub z/ - phi retain previously neglected time-dependent terms and for axisymmetric beams reduce exactly to Maxwell's equations.
Date: July 20, 1987
Creator: Sharp, W. M.; Yu, S. S. & Lee, E. P.
Object Type: Report
System: The UNT Digital Library
Improved bunch spreader modules (open access)

Improved bunch spreader modules

In order to raise the threshold beam current of instabilities in the fixed target run, it is required to increase the longitudinal emittance, and hence the bunch length. The bunch spreader used a noise generator through a sharp-cut ban pass filter (BPF) instead of a coherent signal. In that filter, the pass band frequency was near twice the synchrotron frequency 2f/sub s/. The bandwidth of the filter was fixed between 350Hz and 600Hz, though twice the synchrotron frequency changed from 500Hz to 300Hz after transition in Main Ring. The noise through the filter is applied to an RF amplitude modulator. In the Tevatron, where the synchrotron frequency f/sub s/ varies from 120Hz to 40Hz during acceleration, the noise is applied to a phase shifter at the frequency of f/sub s/. So, we need a tunable filter which tracks 2f/sub s/ in the Main Ring and f/sub s/ in the Tevatron. This note describes details of improved bunch spreader modules using a tunable filter used in both the Main Ring and the Tevatron. A brief description about this module along with a beam test done in the Main Ring is shown. 3 refs., 6 figs.
Date: July 20, 1989
Creator: Ieiri, Takao
Object Type: Report
System: The UNT Digital Library
Preliminary analysis of surface mining options for Naval Oil Shale Reserve 1 (open access)

Preliminary analysis of surface mining options for Naval Oil Shale Reserve 1

The study was undertaken to determine the economic viability of surface mining to exploit the reserves. It is based on resource information already developed for NOSR 1 and conceptual designs of mining systems compatible with this resource. Environmental considerations as they relate to surface mining have been addressed qualitatively. The conclusions on economic viability were based primarily on mining costs projected from other industries using surface mining. An analysis of surface mining for the NOSR 1 resource was performed based on its particular overburden thickness, oil shale thickness, oil shale grade, and topography. This evaluation considered reclamation of the surface as part of its design and cost estimate. The capital costs for mining 25 GPT and 30 GPT shale and the operating costs for mining 25 GPT, 30 GPT, and 35 GPT shale are presented. The relationship between operating cost and stripping ratio, and the break-even stripping ratio (BESR) for surface mining to be competitive with room-and-pillar mining, are shown. Identification of potential environmental impacts shows that environmental control procedures for surface mining are more difficult to implement than those for underground mining. The following three areas are of prime concern: maintenance of air quality standards by disruption, movement, and …
Date: July 20, 1981
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Limits to the resolution of beam size measurement from fluorescent screens due to the thickness of the phosphor (open access)

Limits to the resolution of beam size measurement from fluorescent screens due to the thickness of the phosphor

This paper discusses the use of fluorescent screens for the measurement of beam profiles on non-circulating particle beams. An expression for the intensity of the beam profile as a function of phosphor thickness is given. 3 refs., 8 figs.
Date: July 20, 1988
Creator: Johnson, C. D.
Object Type: Report
System: The UNT Digital Library
Effect of non-adiabaticity of alpha particles in the axisymmetric cusp TMR (open access)

Effect of non-adiabaticity of alpha particles in the axisymmetric cusp TMR

One of the end plug configurations we have investigated for use in a tandem mirror reactor is the axisymmetric cusp. We show that because of non-adiabaticity, the containment of 3.5 MeV alpha particles in this configuration is insufficient for the attainment of acceptable plasma performance.
Date: July 20, 1981
Creator: Carlson, Gustav A. & Barr, William L.
Object Type: Report
System: The UNT Digital Library
Probabilistic analyses of failure in reactor coolant piping. [Double-ended guillotine break] (open access)

Probabilistic analyses of failure in reactor coolant piping. [Double-ended guillotine break]

LLNL is performing probabilistic reliability analyses of PWR and BWR reactor coolant piping for the NRC Office of Nuclear Regulatory Research. Specifically, LLNL is estimating the probability of a double-ended guillotine break (DEGB) in the reactor coolant loop piping in PWR plants, and in the main stream, feedwater, and recirculation piping of BWR plants. In estimating the probability of DEGB, LLNL considers two causes of pipe break: pipe fracture due to the growth of cracks at welded joints (direct DEGB), and pipe rupture indirectly caused by the seismically-induced failure of critical supports or equipment (indirect DEGB).
Date: July 20, 1984
Creator: Holman, G.S.
Object Type: Article
System: The UNT Digital Library
Texas Register, Volume 7, Number 54, Pages 2683-2720, July 20, 1982 (open access)

Texas Register, Volume 7, Number 54, Pages 2683-2720, July 20, 1982

A weekly publication, the Texas Register serves as the journal of state agency rulemaking for Texas. Information published in the Texas Register includes proposed, adopted, withdrawn and emergency rule actions, notices of state agency review of agency rules, governor's appointments, attorney general opinions, and miscellaneous documents such as requests for proposals. After adoption, these rulemaking actions are codified into the Texas Administrative Code.
Date: July 20, 1982
Creator: Texas. Secretary of State.
Object Type: Journal/Magazine/Newsletter
System: The Portal to Texas History
Texas Attorney General Opinion: LO88-85 (open access)

Texas Attorney General Opinion: LO88-85

Letter opinion issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Jim Mattox, regarding a legal question submitted for clarification.
Date: July 20, 1988
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Texas Attorney General Opinion: JM-753 (open access)

Texas Attorney General Opinion: JM-753

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Jim Mattox, regarding a legal question submitted for clarification; Whether a county may furnish rent-free office space in the county courthouse annex to a chamber of commerce
Date: July 20, 1987
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
A long polarized target for the Fermilab muon beam (open access)

A long polarized target for the Fermilab muon beam

The purpose of this short talk is to initiate a discussion on the question of whether a long polarized target should be constructed for the Fermilab muon beam. 4 refs.
Date: July 20, 1988
Creator: Spinka, H.
Object Type: Article
System: The UNT Digital Library
Texas Register, Volume 9, Number 54, Pages 3889-3794, July 20, 1984 (open access)

Texas Register, Volume 9, Number 54, Pages 3889-3794, July 20, 1984

A weekly publication, the Texas Register serves as the journal of state agency rulemaking for Texas. Information published in the Texas Register includes proposed, adopted, withdrawn and emergency rule actions, notices of state agency review of agency rules, governor's appointments, attorney general opinions, and miscellaneous documents such as requests for proposals. After adoption, these rulemaking actions are codified into the Texas Administrative Code.
Date: July 20, 1984
Creator: Texas. Secretary of State.
Object Type: Journal/Magazine/Newsletter
System: The Portal to Texas History
Housing Assistant To Low-and Moderate-Income Households (open access)

Housing Assistant To Low-and Moderate-Income Households

This report discusses the housing assistance for low and moderate income households
Date: July 20, 1982
Creator: Milgram, Grace
Object Type: Report
System: The UNT Digital Library