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Absolute dipole gamma-ray strength functions for /sup 176/Lu. Supplement

Description: We have derived absolute dipole strength-function information for /sup 176/Lu from an average resonance capture study of /sup 175/Lu with 2-keV neutrons and from neutron capture cross-section measurements with neutrons from 30 keV to about 1 MeV. We found that we needed to increase our previous estimate of the relative M1/E1 strengths near 5 MeV by a factor of 3 and to revise downward the absolute magnitude of our E1 strength function. We accomplished the latter, while still maintaining continu… more
Date: October 16, 1984
Creator: Gardner, D. G.; Gardner, M. A. & Hoff, R. W.
Item Type: Refine your search to only Article
open access

Analytical capabilities of RIMS: absolute sensitivity and isotopic analysis. [Resonance ionization mass spectrometry]

Description: The cw laser RIMS approach has been demonstrated to accurately measure large Lu isotope ratios and detect small levels of minor isotopes even in the presence of isobaric interferences. The same approach can also be used to obtain high resolution optical spectra of rare isotopes. For elements with higher ionization potentials (e.g., Tc), multicolor ionization schemes are necessary for cw RIMS measurements. Two-color RIMS spectra of Tc using pulsed lasers illustrate the feasibility of this approa… more
Date: April 16, 1984
Creator: Nogar, N. S.; Downey, S. W. & Miller, C. M.
Item Type: Refine your search to only Article
open access

BNL Neutral Beam Development Group. Progress report, FY 1983 and final report

Description: The BNL Neutral Beam Development Group has been active in the program for the development of high energy, high power neutral beam systems since 1973. These injectors are based on the production, acceleration and neutralization of negative hydrogen or deuterium ions and are supposed to be used for plasma heating and current drive in the next generation of fusion devices. Over the span of 10 years the group has studied plasma-surface type of negative hydrogen ion sources, transport and accelerati… more
Date: March 16, 1984
Creator: Prelec, K. & Sluyters, T.
Item Type: Refine your search to only Report
open access

Design and operation of a rapid thermal transient component testing sodium loop

Description: A specific problem developed during the design of an on-line sampling system for the Sodium Loop Safety Facility fast breeder reactor experiments. Rapid fluctuations in the sodium temperature, caused by reactor operation and shutdown, exposed the system components to conditions that could result in fatigue failure. A component test loop was designed and built at the Idaho National Engineering Laboratory to allow experimental qualification of component integrity. This paper outlines test system … more
Date: April 16, 1984
Creator: Crandall, D. L.
Item Type: Refine your search to only Article
open access

Diffusion bonding resistant valve development for sodium service

Description: Unanticipated functional failures occurred in valves undergoing containment integrity testing for liquid sodium service. The failures resulted from diffusion bonding of the Stellite 6B valve plug to the Type 316 stainless steel (SS) seat. As a result of these failures, a valve development program was undertaken. A modified valve incorporating a Tribaloy 800 plug showed significant improvement in resistance to diffusion bonding but still failed after long term exposure in a closed position. A se… more
Date: April 16, 1984
Creator: Crandall, D. L.; Low, J. O.; Chung, D. T. & Loop, R. B.
Item Type: Refine your search to only Article
open access

Fusion materials science at reactor 14-MeV neutron fluxes: upgrading RTNS targets into the multi-megawatt/m/sup 2/ regime

Description: The Rotating Target Neutron Source-II (RTNS-II) facility is the most intense continuous source of 14-MeV neutrons in the world. It is used to study the effects of fast neutrons on materials, to determine their suitability for use in fusion reactors. In RTNS-II, a water-cooled rotating target coated with titanium tritide is bombarded with deuterons. A small fraction of the incident deuterons fuse with the tritons in the target, producing 14.3-MeV neutrons. At present the neutron flux is substant… more
Date: March 16, 1984
Creator: Tuckerman, D.B.
Item Type: Refine your search to only Report
open access

GEOGYN - a geological formation/drill string dynamics computer program

Description: This paper describes the initial development phase of a finite element computer program, GEODYN, capable of simulating the three-dimensional transient, dynamic response of a polycrystalline diamond compact (PDC) bit interacting with a non-uniform formation. The ability of GEODYN to simulate response variations attributable to hole size, hole bottom surface shapes, and formation material non-uniformities is demonstrated. Planned developmental phases will address the detailed response of a bottom… more
Date: September 16, 1984
Creator: Caskey, B.
Item Type: Refine your search to only Article
open access

Inertial confinement fusion: present status and future potential

Description: Power from inertial confinement fusion holds much promise for society. This paper points out many of the benefits relative to combustion of hydrocarbon fuels and fission power. Potential problems are also identified and put in perspective. The progress toward achieving inertial fusion power is described and results of recent work at the Lawrence Livermore National Laboratory are presented. Key phenomenological uncertainties are described and experimental goals for the Nova laser system are give… more
Date: July 16, 1984
Creator: Hogan, W.J.
Item Type: Refine your search to only Article
open access

Isomer ratio calculations using modeled discrete levels

Description: Isomer ratio calculations were made for the reactions: /sup 175/Lu(n,..gamma..)/sup 176m,g/Lu, /sup 175/Lu(n,2n)/sup 174m,g/Lu, /sup 237/Np(n,2n)/sup 236m,g/Np, /sup 241/Am(n,..gamma..)/sup 242m,g/Am, and /sup 243/Am(n,..gamma..)/sup 244m,g/Am using modeled level structures in the deformed, odd-odd product nuclei. The hundreds of discrete levels and their gamma-ray branching ratios provided by the modeling are necessary to achieve agreement with experiment. Many rotational bands must be include… more
Date: October 16, 1984
Creator: Gardner, M. A.; Gardner, D. G. & Hoff, R. W.
Item Type: Refine your search to only Article
open access

Laser-assisted solar cell metallization processing. Quarterly report, September 13-December 12, 1983

Description: The Westinghouse Electric Corporation has undertaken to investigate, develop, and characterize laser-assisted processing techniques utilized to produce the fine line, thin metal grid structures that are required to fabricate high-efficiency solar cells. Two basic techniques for metal deposition will be investigated, as follows: (1) photochemical decomposition of liquid or gas phase organometallic compounds utilizing either a focused, CW ultraviolet laser (System 1) or a mask and ultraviolet flo… more
Date: January 16, 1984
Creator: Dutta, S.
Item Type: Refine your search to only Report
open access

MOD silver metallization for photovoltaics. Quarterly technical report, March 1, 1984-May 31, 1984. [Metalloorganic deposition]

Description: It was demonstrated that the nature of the initial solvent used to extract the silver neodecanoate during synthesis or to render it into solution for ink formulation has a profound influence on fired film properties. The lower the boiling point of the initial solvent, the more of it was removed during rotary vacuum evaporation, and the less effect it had on fired film properties. Benzene and tetrahydrofuran were superior to xylene and toluene, and inks which used them in their preparation produ… more
Date: July 16, 1984
Creator: Vest, G. M. & Vest, R. W.
Item Type: Refine your search to only Report
open access

Optical guiding in a free electron laser

Description: The coherent interaction between an optical wave and an electron beam in a free electron laser (FEL) is shown to be capable of optically guiding the light. The effect is analyzed using a two-dimensional approximation for the FEL equations, and using the properties of optical fibers. Results of two-dimensional (cylindrically symmetric) numerical simulations are presented, and found to agree reasonably well with the analytically derived criterion for guiding. Under proper conditions, the effect c… more
Date: October 16, 1984
Creator: Scharlemann, E. T.; Sessler, A. M. & Wurtele, J. S.
Item Type: Refine your search to only Article
open access

Oxidation/gasification of carbon residue on retorted oil shale. Final report

Description: Studies of the oxidation and gasification of oil shale char were extended to an investigation of the effects of mineral catalysis. Six shales with differing mineral compositions were studied, including samples from the saline zone in the Western Colorado and from the Antrim shales of Michigan. Oxidation kinetics data, corrected for mass transfer effects, were compared for all six samples. A high assay shale from Utah and a sample from the saline zone were found to have the highest oxidation rat… more
Date: January 16, 1984
Creator: Thomson, W. J.
Item Type: Refine your search to only Report
open access

Separation and Characterization of Coal Derived Components. Quarterly Report, 1 October 1983-31 December 1983

Description: No new field-ionization data was obtained this quarter. For preasphaltenes, elemental analysis data was obtained on Kentucky and Wyodak preasphaltene samples. In conjunction with the preasphaltene work, solubility and thin-layer chromatography experiments were performed. The results indicated that basic alumina would not be useful as a general stationary phase for the separation of preasphaltenes. Several experiments were carried out with Chromasorb T, and the results showed it would be an adeq… more
Date: January 16, 1984
Creator: Hurtubise, R. H. & Silver, H. F.
Item Type: Refine your search to only Report
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