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Kinetics of the radiation-induced exchange reactions of H/sub 2/, D/sub 2/, and T/sub 2/: a review

Description: Mixtures of H/sub 2/--T/sub 2/ or D/sub 2/--T/sub 2/ will exchange to produce HT or DT due to catalysis by the tritium ..beta.. particle. The kinetics of the reaction D/sub 2/ + T/sub 2/ = 2DT may play an important role in designing liquid or solid targets of D/sub 2/--DT--T/sub 2/ for implosion fusion, and distillation schemes for tritium cleanup systems in fusion reactors. Accordingly, we have critically reviewed the literature for information on the kinetics and mechanism of radiation-induce… more
Date: January 6, 1978
Creator: Pyper, J.W. & Briggs, C.K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Thulium-170 heat source

Description: An isotopic heat source is formed using stacks of thin individual layers of a refractory isotopic fuel, preferably thulium oxide, alternating with layers of a low atomic weight diluent, preferably graphite. The graphite serves several functions: to act as a moderator during neutron irradiation, to minimize bremsstrahlung radiation, and to facilitate heat transfer. The fuel stacks are inserted into a heat block, which is encased in a sealed, insulated and shielded structural container. Heat pipe… more
Date: September 6, 1990
Creator: Walter, Carl E.; Van Konynenburg, Richard & VanSant, James H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Beryllium usage in fusion blankets and beryllium data needs. [None]

Description: Increasing numbers of designers are choosing beryllium for fusion reactor blankets because it, among all nonfissile materials, produces the highest number (2.5 neutron in an infinite media) of neutrons per 14-MeV incident neutron. In amounts of about 20 cm of equivalent solid density, it can be used to produce fissile material, to breed all the tritium consumed in ITER from outboard blankets only, and in designs to produce Co-60. The problem is that predictions of neutron multiplication in bery… more
Date: April 6, 1988
Creator: Moir, Ralph W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Tritium waste control project: October 1976--March 1977

Description: Catalytic Exchange Detritiation: A pilot-scale combined electrolysis catalytic exchange system was constructed. Tritiated Liquid Waste Decontamination (Molecular Excitation): The scavenger and irradiation cell apparatus was completed for the two-photon ISP system. The uv source (xenon flashlamp) was adapted to the photolysis cell. A problem with the optical parametric oscillator was traced to prelasing due to a degradation in isolator rejection, and the laser power supply is being modified. Fix… more
Date: October 6, 1977
Creator: Anderson, H.F. & Kershner, C.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Environmental radiological studies downstream from the Rancho Seco Nuclear Power Generating Station, 1985

Description: Information compiled in 1985 while assessing the environmental impact of radionuclides previously discharged with aqueous releases from the Rancho Seco Nuclear Power Generating Plant is presented. In October 1984, the quantities of gamma-emitting radionuclides in water discharged to Clay Creek from the plant were reduced below operationally defined detection limits for liquid effluents. However, radionuclides previously discharged persist in the downstream environment and are found in many aqua… more
Date: February 6, 1986
Creator: Noshkin, V. E.; Wong, K. M.; Eagle, R. J.; Brunk, J. L. & Jokela, T. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Physics division annual report 1999

Description: This report summarizes the research performed in the past year in the Argonne Physics Division. The Division's programs include operation of ATLAS as a national heavy-ion user facility, nuclear structure and reaction research with beams of heavy ions, accelerator research and development especially in superconducting radio frequency technology, nuclear theory and medium energy nuclear physics. The Division took significant strides forward in its science and its initiatives for the future in the… more
Date: December 6, 2000
Creator: Thayer, K., ed. & Physics
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Californium Isotopes From Bombardment of Uranium With Carbonions

Description: The recent production and identification of isotopes of elements with atomic numbers up to six higher than the target element through bombardment with hexapositive 120-Mev carbon ions made it seem worthwhile to apply this technique to the transuranium region. Accordingly, small pieces of natural uranium metal (about 0.5 mil thick and 205 cm by 0.6 cm area) were irradiated in the internal carbon ion beam in the Berkeley 60-inch cyclotron. Following the irradiations, the uranium was dissolved in … more
Date: September 6, 1950
Creator: Ghiorso, A.; Thompson, S. G.; Street, Jr., K. & Seaborg, G. T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Performance of Vacuum Pumps to be Used in Tritium Extraction Facility

Description: The goal of this test was to measure pump operating characteristics for three different gases and a wider range of conditions than for the vendor data. Test results will be used by Engineering Development Section for incorporation in a computer model of the pump train.
Date: April 6, 1999
Creator: Steimke, J. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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In Vivo Measurement of Actinides in the Human Lung. [Calibration and Comparison of Phoswich, Large-Area Proportional Counter, and Intrinsic Germanium Planar Array Detector Systems]

Description: The problems associated with the in vivo detection and measurement of actinides in the human lung are discussed together with various measurement systems currently in use. In particular, the methods and calibration procedures employed at the Lawrence Livermore Laboratory, namely, the use of twin Phoswich detectors and a new, more realistic, tissue-equivalent phantom, are described. Methods for the measurement of chest-wall thickness, fat content, and normal human background counts are also disc… more
Date: November 6, 1979
Creator: Anderson, A. L.; Campbell, G. W. & Griffith, R. V.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Collective excitation spectra of transitional even nuclei

Description: This talk is dealing with the nuclear low energy collective motion as described in the context of microscopic versions of the Bohr Hamiltonian. Two different ways of building microscopically Bohr collective Hamiltonians will be sketched; one within the framework of the Generator Coordinate Method, the other using the Adiabatic Time-Dependent Hartree-Fock-Boholyubov approximation. A sample of recent results will be presented which pertains to the description of transitional even nuclei and to th… more
Date: November 6, 1990
Creator: Quentin, P. (Lawrence Livermore National Lab., CA (USA) Paris-11 Univ., 91 - Orsay (France). Centre de Spectrometrie Nucleaire et de Spectrometrie de Masse); Deloncle, I.; Libert, J. (Paris-11 Univ., 91 - Orsay (France). Centre de Spectrometrie Nucleaire et de Spectrometrie de Masse) & Sauvage, J. (Paris-11 Univ., 91 - Orsay (France). Inst. de Physique Nucleaire)
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Beta decay of neutron-rich transuranic nuclei

Description: Allowance is made for beta-delayed fission in the calculation of the mass yield of underground thermonuclear explosions. This allowance is made by calculating a correction factor by four different methods. These correction factors are applied to a simple model of product yield and the accuracy and potential usefulness of the results are discussed. 19 refs., 3 figs., 1 tab. (DWL)
Date: June 6, 1986
Creator: Hoff, R.W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Development of advanced concepts for improved heavy water production technology. Tri-quarterly report, January 1-September 30, 1980

Description: Research into deuterium-from-protium isotope separation via both metal hydride chromatography and CO/sub 2/ laser multiple-photon dissociation (MPD) of trifluoromethane (CDF/sub 3//CHF/sub 3/) is discussed. Several new classes of alloy compositions, including Mg-rare earth, NiTi/sub x/, and (Ca+Ce,Zr,Ti)./sub 8//sup -/Ni/sub 4/Cu compounds, were evaluated for chromatograhic isotope separation; no tested alloy exhibited properties suitable for commercial deuterium separation. For deuterium separ… more
Date: November 6, 1980
Creator: Aldridge, F. T.; Herman, I. P.; Marling, J. B. & Wood, L. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Remote sensing of soil radionuclide fluxes in a tropical ecosystem

Description: We are using a transponding geostationary satellite to collect surface environmental data to describe the fate of soil-borne radionuclides. The remote, former atomic testing grounds at the Eniwetok and Bikini Atolls present a difficult environment in which to collect continuous field data. Our land-based, solar-powered microprocessor and environmental data systems remotely acquire measurements of net and total solar radiation, rain, humidity, temperature, and soil-water potentials. For the past… more
Date: November 6, 1980
Creator: Clegg, B.; Koranda, J.; Robinson, W. & Holladay, G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Thulium-170 heat source

Description: An isotopic heat source is formed using stacks of thin individual layers of a refractory isotopic fuel, preferably thulium oxide, alternating with layers of a low atomic weight diluent, preferably graphite. The graphite serves several functions: to act as a moderator during neutron irradiation, to minimize bremsstrahlung radiation, and to facilitate heat transfer. The fuel stacks are inserted into a heat block, which is encased in a sealed, insulated and shielded structural container. Heat pipe… more
Date: September 6, 1990
Creator: Walter, C. E.; Van Konynenburg, R. & VanSant, J. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Quantifying the Contribution of Lubrication Oil to Particulate Emissions from a Diesel Engine

Description: The contribution of lubrication oil to particulate matter (PM) emissions from a Cummins B5.9 Diesel engine was measured using accelerator mass spectrometry to trace carbon isotope concentrations. The engine operated at fixed medium load (285 N-m (210 ft.lbs.) 1600 m) used 100% biodiesel fuel (B100) with a contemporary carbon-14 ({sup 14}C) concentration of 103 amol {sup 14}C/ mg C. The C concentration of the exhaust C02 and PM were 102 and 99 amol {sup 14}C/mg C, respectively. The decrease in I… more
Date: December 6, 2002
Creator: Cheng, A. S.; Rich, D.; Dibble, R. W. & Buchholz, B. A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Stable isotope sales: Mound Laboratory customer and shipment summaries, FY 1976 and FY 1976A

Description: A listing is given of Mound Laboratory's sales of stable isotopes of noble gases, carbon, oxygen, nitrogen, chlorine, and sulfur for fiscal years 1976 and 1976A (the period July 1, 1975 through September 30, 1976). Purchasers are listed alphabetically and are divided into domestic and foreign groups. A cross-reference index by location is included for domestic customers. Cross-reference listings by isotope purchased are included for all customers.
Date: June 6, 1977
Creator: Ruwe, A. H., Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Environmental and technological implications of a theta-pinch fusion power plant

Description: The environmental effects of this conceptual design were evaluated and found to be little different from other electrical power plants in most regards. Exceptions include a very small release of tritium, a low-hazard isotope, and relatively large amounts of radioactive material which must be either stored on site for eventual reprocessing or permanently discarded. These radioactive materials are nonvolatile and should not pose a difficult disposal problem, although some of the material may rema… more
Date: May 6, 1974
Creator: Coultas, T. A.; Burke, R. J. & Krakowski, R. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Direct Conversion of Neutron Energy and Other Advantages of a Large Yield Per Pulse, Inertial-Confinement Fusion Reactor

Description: Aspects of an inertial-confinement, fusion reactor that uses an energy release {approx gt}10{sup 11} joules are discussed. The large energy release makes possible direct conversion of the fusion neutrons' energy after nuclear heating of an evaporated blanket to the plasma state. Surface damage by charged particles is avoided and structural damage by neutrons is alleviated. Complex fuel assemblies and other expandable parts may be used as a result of the high monetary value of the energy release. more
Date: May 6, 1974
Creator: Burke, R. J. & Cutting, J. C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Steam gasification of carbon: Catalyst properties, March 15, 1992--June 14, 1992

Description: This research uses several techniques to measure the concentration of catalyst sites and determine their stoichiometry for the catalyzed gasification of carbon. Both alkali and alkaline earth oxides are effective catalysts for accelerating the gasification rate of coal chars, but only a fraction of the catalyst appears to be in a form that is effective for gasification, and the composition of that catalyst is not established. Transient techniques, with {sup 13}C labeling, are being used to stud… more
Date: July 6, 1992
Creator: Falconer, J. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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