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Development and Test Evaluations for Ni-DOBDC Metal Organic Framework (MOF) Engineered Forms

Description: A joint effort to prepare engineered forms of a Ni-DOBDC metal organic framework (MOF) was completed with contributions from PNNL, SNL and the INL. Two independent methods were used at INL and SNL to prepare engineered form (EF) sorbents from Ni-DOBDC MOF powder developed and prepared at PNNL. Xe and Kr capacity test evaluations were performed at ambient temperature with the cryostat experimental setup at INL. The initial INL EF MOF test results indicated a Xe capacity of 1.6 mmol/kg sorbent an… more
Date: July 1, 2013
Creator: Garn, Troy G. & Greenhalgh, Mitchell
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Production of Xe135 for Laboratory Purposes. Irradiation of Uranium Hydroxide: Final Report on Production Test 305-15-P

Description: The construction and operation of a fission gas generator, containing about 25 grams of uranium in the form of a powder with a high specific surface, are described in detail. The purpose of the work discussed in this report was to examine the feasibility of producing, separating, and assaying samples of Xe135 in preparation for a proposed measurement of the neutron cross section of this isotope. Krypton and xenon are separated by selective adsorption on charcoal at reduced temperature while i… more
Date: July 15, 1953
Creator: Culvahouse, J. W.; Finnigan, J. W.; Lefevre, H. W. & Peterson, R. E. (Russell Edwin), 1927-
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Recent Studies of Proton Drip-Line Nuclei Using the Berkeley Gas-Filled Separator

Description: The Berkeley Gas-filled Separator provides new research opportunities at Lawrence Berkeley National Laboratory's X-Inch Cyclotron. The use of this apparatus for the study of proton drip-line nuclides is discussed. Preliminary results of {sup 78}Kr bombardments of {sup 102}Pd targets at mid-target energies of 360, 375 and 385 MeV are presented. Improvements planned partially as a result of this measurement are also discussed.
Date: October 7, 1999
Creator: Rowe, M.W.; Batchelder, J.C.; Ninov, V.; Gregorich, K.E.; Toth, K.S.; Bingham, C.R. et al.
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Partner: UNT Libraries Government Documents Department
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Atom capture and loss in ion molecule collisions

Description: Progress is reported in measuring the energy and angular distribution of protons emerging with velocity close to the beam velocity from the target region when Ar/sup +/ beams collide with a CH/sub 4/ target and ArH/sup +/ beams collide with a He target at asymptotically high speeds. The protons result from the transfer of a target constituent to the projectile (atom capture) or from the dissociation of the projectile molecule in the collision (atom loss). For atom capture processes the Thomas p… more
Date: January 1, 1985
Creator: Breinig, M.; Lasley, S.E. & Gaither, C.C. III
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Preliminary considerations of an intense slow positron facility based on a sup 78 Kr loop in the high flux isotopes reactor

Description: Suggestions have been made to the National Steering Committee for the Advanced Neutron Source (ANS) by Mills that provisions be made to install a high intensity slow positron facility, based on a {sup 78}Kr loop, that would be available to the general community of scientists interested in this field. The flux of thermal neutrons calculated for the ANS is E + 15 sec{sup {minus}1} m{sup {minus}2}, which Mills has estimated will produce 5 mm beam of slow positrons having a current of about 1 E + 1… more
Date: January 1, 1990
Creator: Hulett, L. D. Jr.; Donohue, D. L.; Peretz, F. J.; Montgomery, B. H. & Hayter, J. B.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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The distribution sphere model

Description: The equivalent sphere model, which is widely used in calculating the release of fission gases from nuclear fuel, is idealized. The model is based on the diffusion of fission products in and their escape from a homogeneous sphere of fuel; the fission products are generated at a constant rate and undergo radiodecay. The fuel is assumed to be a set of spherical particles with a common radius. The value of the radius is such that the surface-to-volume ratio, S/V, of the set of spherical particles i… more
Date: August 1, 1993
Creator: Myers, B. F.; Montgomery, F. C. & Morris, R. N.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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A high power microwave frequency modulated KrF laser

Description: The authors report on the development of a 260mJ 248 nm KrF laser with 98.7% depth of modulation at 1.3 GHz and 77% depth of modulation at 2.6 GHz using a 1.3 GHz microwave source driving a Pockel`s cell. Subsequent single-pass amplification of the modulated KrF source to the 1/4-joule level is shown to be straight forward with no noticeable degradation of the modulation depth.
Date: April 1, 1994
Creator: Sze, R. C.; McCown, A. & Kurnit, N. A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Intracavity flux dependent absorption in e-beam pumped KrF

Description: Transient absorption measurements are performed on e-beam excited KrF under lasing and nonlasing conditions for 10% Kr (Ar diluent) and 99.6% Kr gas mixtures. The intracavity flux is varied by changing the output mirror reflectivity. The deposition rate for this experiment is {approx}396 kW/cm{sup 3}. For the 10% Kr and Kr-rich mixtures, the small signal absorption at 248.4 nm is 0.76%/cm and 1.25%/cm, respectively; while the nonsaturable absorption in 0.62%/cm and 0.90%/cm, respectively. A flu… more
Date: December 31, 1988
Creator: Seamans, J. F.; Kimura, W. D. & Hanson, D. E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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In situ TEM study of ion-beam-induced amorphization of complex silicate structures

Description: In-situ TEM with ion irradiation was used to study the radiation- induced amorphization (metamictization) of naturally occurring silicates: neptunite [Na2KLi(Fe,Mn)2Ti2(SiO3)8], titanite (CaTiSiO5), gadolinite (REE2FeBe2Si2O10), zircon (ZrSiO4), and olivine [(Mg, Fe)2SiO4]. They were irradiated with 1.5 MeV Kr{sup +} ions the Argonne HVEM-Tandem Facility at room temperature with electron diffraction pattern monitored in situ. Critical doses required for amorphization of the electron transparent… more
Date: December 31, 1990
Creator: Wang, L. M.; Eby, R. K.; Janeczek, J. & Ewing, R. C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Adsorption of Krypton and Xenon by Various Materials

Description: The adsorptive capacities of various inorganic adsorbents and activated charcoals for krypton and xenon were determined. Columbia-G activated charcoal had the highest capacity for both krypton and xenon at pressures from 0.01 to 125 mm Hg and temperaturens from 2 to 85 deg C. If a value of 1 is assigned to the capacity of this charcoal at 28 deg C for krypton, other charcoals range from 0.63 to 0.84, molecular sieves (except 4A) from 0.11 to 0.20, and some silica genls from 0.05 to 0.07. Variou… more
Date: December 1, 1961
Creator: Lloyd, M. H. & McNees, R. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Fuel age impacts on gaseous fission product capture during separations

Description: As a result of fuel reprocessing, volatile radionuclides will be released from the facility stack if no processes are put in place to remove them. The radionuclides that are of concern in this document are 3H, 14C, 85Kr, and 129 Rosnick 2007 I. The question we attempt to answer is how efficient must this removal process be for each of these radionuclides? To answer this question, we examine the three regulations that may impact the degree to which these radionuclides must be reduced before proc… more
Date: September 21, 2012
Creator: Jubin, Robert T.; Soelberg, Nicolas R.; Strachan, Denis M. & Ilas, G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A Study of the Delayed Neutron Emitter, Br87

Description: Report discussing a study to determine experimentally whether a low neutron binding energy must be assigned to Kr⁸⁷ to explain the neutron emission or whether the beta-decay energy is especially high, as well as to determine the fission yield of Br⁸⁷.
Date: August 1, 1950
Creator: Stehney, Andrew Frank
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Isentropic Compression of Argon and Krypton Using an MC1 Flux Compression Generator

Description: LANL and VNIIEF are performing a set of joint experiments to explore the conductivity and possible metalization of argon and krypton compressed to up to five times normal solid density. The experiments use a magnetic field of several megagauss, generated by a Russian MC1 generator, to compress a metallic tube containing solidified argon or krypton. A probe in the center of the tube measures the electrical conductivity to the walls, and a 70-MeV betatron serves as an x-ray source for three radio… more
Date: October 18, 1998
Creator: Veeser, L.; Ekdahl, C.; Oona, H.; Rodriguez, P.; Schmitt, G.; Solem, J. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Highly Radiative Plasmas for Local Transport Studies and Power and Particle Handling in Reactor Regimes

Description: To study the applicability of artificially enhanced impurity radiation for mitigation of the plasma-limiter interaction in reactor regimes, krypton and xenon gases were injected into the Tokamak Fusion Test Reactor (TFTR) supershots and high-l(subscripti) plasmas. At neutral beam injection (NBI) powers P(subscript B) greater than or equal to 30 MW, carbon influxes (blooms) were suppressed, leading to improved energy confinement and neutron production in both deuteriumn (D) and deuterium-tritium… more
Date: November 1, 1998
Creator: Bell, M. G.; Bell, R. E.; Budny, R.; Bush, C. E. & Hill, K.W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Solubility of krypton in hydrofracture grout at elevated pressures

Description: The solubilities of krypton in water, simulated waste solution, and simulated grout at about 25/sup 0/C and to pressures of 150 atm have been determined. The results of these studies show that preliminary calculations of krypton solubility based on the aqueous component of the hydrofracture grout were overly pessimistic. The volume of noble gas generated annually by the reference reprocessing plant would be soluble in the annual hydrofracture grout injection at ORNL at about 10 atm. The amount … more
Date: January 1, 1982
Creator: Fitzgerald, C. L. & Mailen, J. C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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REMOVAL OF FISSION PRODUCT GASES FROM REACTOR OFF-GAS STREAMS BY ADSORPTION (PRESENTED AT AMERICAN NUCLEAR SOCIETY MEETING, DETROIT, MICHIGAN, DECEMBER 10, 1958)

Description: A disposal process is described in which the noble gas fission products, krypton and xenon, are delayed relative to the sweep gas by physical adsorption as they pass through an adsorbent such as activated charcoal. A theoretical expression describing this process was developed, using a theoretical plate analysis, and was verified experimentally. The retention time for a gas present in trace concentration is proportional to the amount of charcoal in the adsorber bed and to the adsorption coeffic… more
Date: June 11, 1959
Creator: Browning, W. E.; Adams, R. E. & Ackley, R. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Comparison of experimentally determined spent-fuel compositions with ORIGEN 2 calculations

Description: The specific experimental measurements of interest here involve the determination of parameters related to the actinide and fission product composition of samples from five elements taken from fuel assemblies discharged from the Turkey Point Unit 3 PWR. Two fuel assemblies were obtained for the purposes of nondestructive and destructive assay. These assemblies were initially fueled with 448 kg of UO/sub 2/ enriched to 2.556 wt % /sup 235/U and then irradiated for 851 full-power days. Five eleme… more
Date: January 1, 1981
Creator: Croff, A. G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Branching Fraction in the Radioactive Decay of ⁸⁵mKr

Description: The branching fraction in the decay of the fission product ⁸⁵m-krypton⁸⁵m to the ground state ⁸⁵krypton (10.75 y) was measured relative to the total decay to both ⁸⁵krypton and ⁸⁵Rb. Samples of uranium-235 were highly irradiated in a high-flux reactor and dissolved. ⁸⁵Rb was measured by isotope-dilution mass spectrometry, and the ⁸⁵krypton was counted in GM tubes the counting efficiencies of which were calibrated with a standardized ⁸⁵krypton gas of known disintegration rate. The branching frac… more
Date: February 1980
Creator: Jaffey, A. H.; Steinberg, E. P.; Gindler, J. E.; Gray, J.; Horwitz, E. P.; Hughes, J. P. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Measuring the Absolute Disintegration Rate of a Radioactive Gas with a Moveable Endplate Discharge Counter (MEP) and Theoretical Calculation of Wall Effect

Description: A precision built moveable endplate Geiger-Mueller counter was used to measure the absolute disintegration rate of a beta-emitting radioactive gas. A Geiger-Mueller counter used for measuring gaseous radioactivity has <100% counting efficiency owing to two factors: (1) ''end effect, '' due to decreased and distorted fields at the ends where wire-insulator joints are placed, and (2) ''wall effect, '' due to non-ionization by beta particles emitted near to and heading into the wall. The end effec… more
Date: June 1986
Creator: Jaffey, Arthur H.; Gray, James; Bentley, William C. & Lerner, Jerome L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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