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305,884 Matching Results

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Best Match Title Creator Date Created (Newest) Date Created (Oldest) Date Added (Newest) Date Added (Oldest)
/sup 16/O + /sup 40/Ca inelastic scattering and the elastic scattering wave function (open access)

/sup 16/O + /sup 40/Ca inelastic scattering and the elastic scattering wave function

The /sup 16/O + /sup 40/Ca inelastic scattering has been measured at 60-MeV incident energy, and evidence has been found in support of an explicit coupling between direct and elastic channels. The measurements were extended over a large angular range and in particular to very forward angles. The ratio of cross sections between extreme forward and backward angles proved very useful in studying the underlying reaction mechanism.
Date: January 1, 1977
Creator: Rehm, K.E.; Henning, W.; Erskine, J.R. & Kovar, D.G.
Object Type: Article
System: The UNT Digital Library
MULTI-NODE SIMULATION OF THE FFTF INTERMEDIATE HEAT EXCHANGER. (open access)

MULTI-NODE SIMULATION OF THE FFTF INTERMEDIATE HEAT EXCHANGER.

None
Date: January 1, 1966
Creator: Gerhardstein, L.H.
Object Type: Report
System: The UNT Digital Library
Microscopic and semi-classical treatments of octupole deformation in the light actinides (open access)

Microscopic and semi-classical treatments of octupole deformation in the light actinides

Microscopic and semi-classical descriptions of octupole deformation are compared. New semi-classical results, obtained with the use of a Woods-Saxon potential are presented. Comparisons with experiment are made. 21 references.
Date: January 1, 1984
Creator: Chasman, R.R.
Object Type: Article
System: The UNT Digital Library
OPERATIONAL ACCIDENTS AND RADIATION EXPOSURE EXPERIENCE WITHIN THE UNITED STATES ATOMIC ENERGY COMMISSION, 1943--1967. (open access)

OPERATIONAL ACCIDENTS AND RADIATION EXPOSURE EXPERIENCE WITHIN THE UNITED STATES ATOMIC ENERGY COMMISSION, 1943--1967.

None
Date: January 1, 1968
Creator: unknown
Object Type: Report
System: The UNT Digital Library
PROGRESS REPORT ON [ESR STUDIES ON TRAPPED SPECIES IN IRRADIATED SOLIDS]. (open access)

PROGRESS REPORT ON [ESR STUDIES ON TRAPPED SPECIES IN IRRADIATED SOLIDS].

None
Date: January 1, 1969
Creator: Hamlet, P.L.
Object Type: Report
System: The UNT Digital Library
TNS Doublet tokamak ohmic-heating power supply study (open access)

TNS Doublet tokamak ohmic-heating power supply study

Separate abstracts were prepared for each of the six included sections. (MOW)
Date: January 1, 1978
Creator: Rogers, J.D. (comp.)
Object Type: Report
System: The UNT Digital Library
Pilot plant test plan, Task IX: technical support. Industrial Low-Btu Fuel Gas Demonstration-Plant Program (open access)

Pilot plant test plan, Task IX: technical support. Industrial Low-Btu Fuel Gas Demonstration-Plant Program

The objective of the AAG pilot plant operation is to provide process data for the gasification and related sections of the demonstration plant. Since the pilot plant will not operate at the actual pressure of the demonstration plant, it is planned to perform tests at two different pressures to obtain a sound basis for pressure scale-up. Other objectives are listed briefly.
Date: January 1, 1978
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Potential for use of high-temperature superconductors in fusion reactors (open access)

Potential for use of high-temperature superconductors in fusion reactors

The present rate of development of high-temperature superconductors (HTSs) is sufficiently rapid that there may be opportunities for their use in contemporary fusion devices such as the International Thermonuclear Experimental Reactor (ITER). The most likely 1application is for delivering power to the superconducting magnets, especially in substituting for the current leads between the temperatures of 4 K and 77K. A second possible application of HTSs is as a liquid-nitrogen-cooled power bus, connecting the power supplies to the magnets, thus reducing the ohmic heating losses over these relatively long cables. A third potential application of HTSs is as an inner high-field winding of the toroidal field coils that would operate at {approx}20 K. While the use of higher temperature magnets offers significant advantages to the reactor system, it is unlikely that tested conductors of this type will be available within the ITER time frame. 23 refs., 2 figs.
Date: January 1, 1991
Creator: Hull, J.R.
Object Type: Article
System: The UNT Digital Library
CHEMICAL TECHNOLOGY DIVISION ANNUAL PROGRESS REPORT FOR PERIOD ENDING MAY 31, 1968. (open access)

CHEMICAL TECHNOLOGY DIVISION ANNUAL PROGRESS REPORT FOR PERIOD ENDING MAY 31, 1968.

None
Date: January 1, 1968
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Decontamination of Savannah River Plant H-Area hot-canyon crane (open access)

Decontamination of Savannah River Plant H-Area hot-canyon crane

Decontamination techniques applicable to the remotely operated bridge cranes in canyon buildings at the Savannah River Plant (SRP) were identified and were evaluated in laboratory-scale tests. High pressure Freon blasting was found to be the most attractive process available for this application. Strippable coatings were selected as an alternative technique in selected applications. The ability of high pressure Freon blasting plus two strippable coatings (Quadcoat 100 and Alara 1146) to remove the type of contamination expected on SRP cranes was demonstrated in laboratory-scale tests. Quadrex HPS was given a contract to decontaminate the H-Area hot canyon crane. Decontamination operations were successfully carried out within the specified time-frame window. The radiation level goals specified by SRP were met and decontamination was accomplished with 85% less personnel exposure than estimated by SRP before the job started. This reduction is attributed to the increased efficiency of the new decontamination techniques used. 6 refs., 1 tab.
Date: January 1, 1985
Creator: Rankin, W N & Sims, J R
Object Type: Article
System: The UNT Digital Library
TWO-MILE ACCELERATOR PROJECT. Quarterly Status Report, January 1--March 31, 1969. (open access)

TWO-MILE ACCELERATOR PROJECT. Quarterly Status Report, January 1--March 31, 1969.

None
Date: January 1, 1969
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Analysis of the results of the Midland PRA (open access)

Analysis of the results of the Midland PRA

This paper presents the results of a limited review of the Midland PRA (MPRA), aimed at facilitating regulatory analyses and at providing insights into safety related plant failures. In particular, stress was laid on the root causes of accident sequences, particularly their failure modes, viz., hardware, human, maintenance, test, and repair. Because this information was difficult to extract in this detailed and sophisticated PRA (and in certain others) a special algorithm was developed to display the leading sequences contributing to core damage and/or to public risk in terms of the above generic failure modes. This was done in a hierarchical fashion to allow tracing the important accident sequences to the systems failures. The weighted core damage frequency (CDF) values of the sequences considered then provided a (quantitative) ranked importance listing of these failure modes, led by hardware failures (in 78%) and human factors (in 37%), etc. Multiple maintenance situations (reflecting on test and maintenance specifications) were also evaluated, but played only a small role (less than or equal to3%). Similar tabulations were also made of the (weighted) importance of the support systems (such as the electric power system, the component cooling water systems, etc.) and of the role of the …
Date: January 1, 1986
Creator: Bozoki, G. & Teichmann, T.
Object Type: Article
System: The UNT Digital Library
Office of Waste Isolation progress report, December 1977 (open access)

Office of Waste Isolation progress report, December 1977

This document reports progress on the OWI's portion of the National Waste Terminal Storage (NWTS) program. It comprises project reports on work performed by organizations under subcontract to OWI, by DOE contractors, by OWI consultants, and by other federal agencies participating in the NWTS program. They are made under the headings technical projects, facility projects, planning and analysis, and regulatory affairs. (DLC)
Date: January 31, 1976
Creator: Zerby, C.D.
Object Type: Report
System: The UNT Digital Library
DEEP SEA RADIOISOTOPE-FUELED THERMOELECTRIC GENERATOR POWER SUPPLY SYSTEM. SNAP-21B PROGRAM, PHASE I. Final Summary Report. (open access)

DEEP SEA RADIOISOTOPE-FUELED THERMOELECTRIC GENERATOR POWER SUPPLY SYSTEM. SNAP-21B PROGRAM, PHASE I. Final Summary Report.

None
Date: January 1, 1966
Creator: Benson, D.; Panneman, R. & Yanisch, V. Jr.
Object Type: Report
System: The UNT Digital Library
Fission Product Energy Release and Inventory From $sup 239$Pu Fast Fission. (open access)

Fission Product Energy Release and Inventory From $sup 239$Pu Fast Fission.

None
Date: January 1, 1967
Creator: Battat, M. E.; Dudziak, D. J. & Hicks, H. R.
Object Type: Report
System: The UNT Digital Library
Evaluation of Carbon Transport Phenomena in HTGR Systems. (open access)

Evaluation of Carbon Transport Phenomena in HTGR Systems.

None
Date: January 1, 1968
Creator: Burnette, R. D.; Bell, W. E.; Zumwalt, L. R. & Perry, C. A.
Object Type: Report
System: The UNT Digital Library
ELECTRON PARAMAGNETIC RESONANCE STUDIES OF RADIATION EFFECTS IN SOLIDS AND CHEMICAL COMPOUNDS. Technical Progress Report, June 1, 1968--May 31, 1969. (open access)

ELECTRON PARAMAGNETIC RESONANCE STUDIES OF RADIATION EFFECTS IN SOLIDS AND CHEMICAL COMPOUNDS. Technical Progress Report, June 1, 1968--May 31, 1969.

None
Date: January 1, 1969
Creator: Kim, Y W
Object Type: Report
System: The UNT Digital Library
Relation between finite element methods and nodal methods in transport theory (open access)

Relation between finite element methods and nodal methods in transport theory

This paper examines the relationship between nodal methods and finite-element methods for solving the discrete-ordinates form of the transport equation in x-y geometry. Specifically, we will examine the relation of three finite-element schemes to the linear-linear (LL) and linear-nodal (LN) nodal schemes. The three finite-element schemes are the linear-continuous-diamond-difference (DD) scheme, the linear-discontinuous (LD) scheme, and the quadratic-discontinuous (QD) scheme. A brief derivation of the (LL) and (LN) nodal schemes is given in the third section of this paper. The approximations that cause the LL scheme to reduce to the DD, LD, and QD schemes are then indicated. An extremely simple method of deriving the finite-element schemes is then introduced.
Date: January 1, 1985
Creator: Walters, W. F.
Object Type: Article
System: The UNT Digital Library
Kaon-nucleus interactions (open access)

Kaon-nucleus interactions

The recent progress in hypernuclear physics, in particular the studies of ..lambda.. and ..sigma.. states via the strangeness-exchange (K/sup -/,..pi../sup -/) reaction, are reviewed. Prospects for future investigations with (proposed) intense kaon beams are also evaluated, for instance the production of high spin hypernuclei via the (..pi../sup +/,K/sup +/) reaction, and the formation of strangeness S = -2 hypernuclei (..lambda lambda.. or Xi/sup -/) by means of the (K/sup -/,K/sup +/) process. A very brief resume of elastic, inelastic and charge exchange reactions induced by the interaction of K/sup +/ mesons with nuclei is given.
Date: January 1, 1980
Creator: Dover, C B
Object Type: Article
System: The UNT Digital Library
Use of principal components analysis and three-dimensional atmospheric-transport models for reactor-consequence evaluation (open access)

Use of principal components analysis and three-dimensional atmospheric-transport models for reactor-consequence evaluation

This work explores the use of principal components analysis coupled to three-dimensional atmospheric transport and dispersion models for evaluating the environmental consequences of reactor accidents. This permits the inclusion of meteorological data from multiple sites and the effects of topography in the consequence evaluation; features not normally included in such analyses. The technique identifies prevailing regional wind patterns and their frequencies for use in the transport and dispersion calculations. Analysis of a hypothetical accident scenario involving a release of radioactivity from a reactor situated in a river valley indicated the technique is quite useful whenever recurring wind patterns exist, as is often the case in complex terrain situations. Considerable differences were revealed in a comparison with results obtained from a more conventional Gaussian plume model using only the reactor site meteorology and no topographic effects.
Date: January 1, 1982
Creator: Gudiksen, P. H.; Walton, J. J.; Alpert, D. J. & Johnson, J. D.
Object Type: Article
System: The UNT Digital Library
Fueling of tandem mirror reactors (open access)

Fueling of tandem mirror reactors

This paper summarizes the fueling requirements for experimental and demonstration tandem mirror reactors (TMRs), reviews the status of conventional pellet injectors, and identifies some candidate accelerators that may be needed for fueling tandem mirror reactors. Characteristics and limitations of three types of accelerators are described; neutral beam injectors, electromagnetic rail guns, and laser beam drivers. Based on these characteristics and limitations, a computer module was developed for the Tandem Mirror Reactor Systems Code (TMRSC) to select the pellet injector/accelerator combination which most nearly satisfies the fueling requirements for a given machine design.
Date: January 1, 1985
Creator: Gorker, G. E. & Logan, B. G.
Object Type: Article
System: The UNT Digital Library
Development of a mathematical model of a packed column for benzene removal from salt solutions (open access)

Development of a mathematical model of a packed column for benzene removal from salt solutions

A mathematical model of a packed column was developed to describe the removal of benzene from radioactive salt solutions at the Savannah River Site. The model was developed from existing, generalized mass transfer correlations for randomly dumped packing, and the correlations were adapted for structured packing. Thermophysical data specific to the solutions of interest were incorporated into the model. Verification of the code was completed using operating data from stripping columns at other locations.
Date: January 1, 1989
Creator: Georgeton, G.K.
Object Type: Article
System: The UNT Digital Library
Power excitation by the use of a rf wiggler (open access)

Power excitation by the use of a rf wiggler

It is well-known that there are difficulties to obtain rf power sources of significant amount for frequencies larger than 3 GHz. Yet, rf sources in the centimeter/millimeter wavelength range would be very useful to drive, for example, high-gradient accelerating linacs for electron-positron linear colliders. We would like to propose an alternative method to produce such radiation. It makes use of a short electron bunch traveling along the axis of a waveguide which is at the same time excited by a TM propagating electromagnetic wave. It is well known that radiation can be obtained by wiggling the motion of the electrons in a direction perpendicular to the main one. The wiggling action can be included by electromagnetic fields in a fashion similar to the one caused by wiggler magnets. We found that an interesting mode of operation is to drive the waveguide with an excitation frequency very close to the cut off. For such excitation, the corresponding e.m. wave travels with a very large phase velocity which in turn has the effect to increase the wiggling action on the electron bunch. Our method, to be effective, relies also on the coherence of the radiation; that is the bunch length is taken …
Date: January 1, 1992
Creator: Ruggiero, Alessandro G.
Object Type: Article
System: The UNT Digital Library
Testing program for determining the mechanical properties of concrete to temperatures of 621/sup 0/C (open access)

Testing program for determining the mechanical properties of concrete to temperatures of 621/sup 0/C

Concrete temperatures in a Liquid Metal Fast Breeder Reactor (LMFBR) in excess of normal code limits can result from postulated large sodium spills in equipment cells. Elevated temperature concrete property data which may have application for providing a basis for the design and evaluation of such postulated accident conditions is limited. Data thus needed to be developed commensurate with LMFBR plant applications for critical physical and mechanical concrete properties under prototypic thermal accident conditions. A test program was conducted to define the variations in physical and mechanical properties of a limestone aggregate concrete and a lightweight insulating concrete exposed to elevated temperatures. Five test series were conducted: unconfined compression, shear, rebar bond, sustained loading (creep), and thermal properties. Testing procedures for determining the mechanical properties of concrete from ambient to 621/sup 0/C (1150/sup 0/F) are described. Ther thermal properties tests are discussed in a separate paper which is also being presented at this conference.
Date: January 1, 1980
Creator: Oland, C.B.; Naus, D.J. & Robinson, G.C.
Object Type: Article
System: The UNT Digital Library