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Automatic Exit Steam Quality Control for Boiling Water Reactors

Description: From American Nuclear Society Meeting, New York, Nov. 1963. The need for control of the flow distribution and/or steam quality in boiling reactors is discussed. A quality control device is being developed which consists of an entrance venturi and an exit venturi for measuring the flow rates into and out of the channel, means for comparing the two flow rate signals, and a value for regulating the flow rate. This device can be used either as a constantquality device or as a controlled-quality dev… more
Date: January 1, 1963
Creator: Gall, D. A. & Doyle, E. F.
Partner: UNT Libraries Government Documents Department
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Beta-Delayed Protons from Ar33, Ca37, and Ti41

Description: No Description Available.
Date: January 1, 1966
Creator: Poskanzer, A.M.; McPherson, R.; Esterlund, R.A. & Reeder, P.L.
Partner: UNT Libraries Government Documents Department
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BREMSSTRAHLUNG IN A DENSE PLASMA

Description: The bremsstrahlung emitted by an electron scattered in a Coulomb field was first calculated by Bethe and Heitler. The total cross section for production of photons with wave number between k and k + dk by a nonrelativistic electron of kinetic energy {epsilon} is d{sigma}/dk dk = 16/3 Z{sup 2}r{sub 0}{sup 2} (e{sup 2}/hc) (mc{sup 2}/{epsilon})log ({radical} {epsilon}/hck + {radical} {epsilon}/hck -1) dk/k, where Ze is the charge of the (heavy) ion, and r{sub 0} is the classical electron radius. … more
Date: January 15, 1963
Creator: Stack, John D. & Sessler, Andrew M.
Partner: UNT Libraries Government Documents Department
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Calcium Turnover Studies in Man

Description: Methods for determination of calcium turnover in man with radioisotopes are presented and the clinical use of various techniques is evaluated. In the discussion of kinetic analyses, some important observations were made. The accretion rate calculation can be made independent of the number of compartments in the exchangeable calcium pool, and thus is not distorted by approximate estimations of this pool. However, if the exchangeable calcium pool is calculated with the isotope dilution technique,… more
Date: January 1, 1963
Creator: Corey, K. R.; Weber, D.; Merlino, M.; Greebberg, D.; Kenny, P. & Laughlin, J. S.
Partner: UNT Libraries Government Documents Department
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Colloidal Radioalbumin Aggregates for Organ Scanning

Description: Colloidal aggregates (10 to 20 m mu ) of human serum albumin /sup 131/I may be used safely by intravenous injection to perform photoscans of the heart, liver, spleen, stomach, and salivary glands in man. Large particle size suspensions (10 to 50 mu ) of the same material were investigated experimentally in animals for scanning the lungs after intravenous injection and the brain following injection into an internal carotid artery. The advantages of this test material are the relatively low radia… more
Date: January 1, 1963
Creator: Taplin, G. V.; Dore, E. K.; Johnson, D. E. & Kaplan, H.
Partner: UNT Libraries Government Documents Department
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CURRENT-CARRYING CAPACITY AND TRANSITION STATE OF SUPERCONDUCTING SOLENOIDS

Description: A solenoid wound with high-field superconducting wire displays maximum currents and fields (H) that are less than the critical field of the wire itself in an equal field (H). Montgomery's and Chandraseknar and Hulm's models for these maximum properties indicate, respectively, a unique coil quenching characteristic for geometrically similar solenoids and one unique characteristic for all solenoids with identical wire type and turn distance. Experiments with Pb coils did not verify Mont… more
Date: January 1, 1963
Creator: Gauster, W F & Coffey, D L
Partner: UNT Libraries Government Documents Department
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Development and Evaluation of Large Volume Scintillation Detectors and Their Application to Radioisotope Process Control

Description: Large-volume scintillation detectors are being developed for radioisotope control of unit processes. In the development work, mirror-finished aluminum foil reflectors were better than diffuse reflectors, argon flushing to remove dissolved oxygen from liquid scintillators improves the pulse amplitude, and liquid scintillators are superior to plastics. Dimethyl POPOP was found to be an excellent primary solute; optimum concentration is 2.5 g/l in toluene with argon flushing and no secondary solut… more
Date: January 1, 1962
Creator: Perry, J. K.
Partner: UNT Libraries Government Documents Department
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THE DIFFUSION OF FAST NEUTRONS

Description: From American Nuclear Society Meeting, New York, Nov. 1963. The use of the asymptotic solution to the one-velocity transport equation is considered. The angular distribution for fast neutron elastic scattering by heavy elements is discussed. An exponential angular distributi on is assumed to simplify the decay length calculation. The diffusion length of 1 to 15 Mev neutrons in iron is calculated, as well as the vector flux angular dependence. The asymptotic solution for an arbitrary angular dis… more
Date: January 1, 1963
Creator: Francis, N C; Brooks, E J & Watson, R A
Partner: UNT Libraries Government Documents Department
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Domestic tar sands and potential recovery methods: a review

Description: Present knowledge of United States tar sands, including physical properties, occurrence, reserves, and recovery methods, is reviewed and evaluated. Tar sands are oil-, bitumen-, asphalt-, tar-, or petroleum-impregnated rock from which little hydrocarbon material is recoverable by conventional crude oil production techniques. Tar sand oil has been produced by steam injection and underground combustion techniques and by mining methods. However, efficient application of nonmining recovery techniqu… more
Date: January 1, 1969
Creator: Spencer, G. B.; Eckard, W. E. & Johnson, F. S.
Partner: UNT Libraries Government Documents Department
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EFFECT OF FLUORIDE IONS ON THE AQUEOUS CORROSION OF ZIRCONIUM ALLOYS

Description: A review was made of the effects of fluoride ions on the corrosion behavior of zirconium alloys in high-temperature water. Corrosion was found to occur as the result of contamination of the water or the zirconium surface. A major source of fluorides is undue delay in rinsing the HF--HNO/sub 3/ pickling solution during surface preparation. The oxide on corrosion-resistant material has been found to contain up to 7600 ppm fluoride from this source. The threshold concentration of fluoride in the o… more
Date: January 1, 1963
Creator: Berry, W E
Partner: UNT Libraries Government Documents Department
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The Effect of Ionizing Radiation on the Optical and Electrical Properties of the Alkali Halides

Description: Various mechanisms for the formation of point defects in ionic crystals are considered. Their probable importance as a function of the energy of the ionizing radiation and the temperature at which the irradiation takes place is discussed. Complex centers formed from aggregates of simple point defects are reviewed and their occurrence considered in terms of the expected spatial distribution of the point defects. The effect of high energy x rays and protons on the ionic conductivity is discussed … more
Date: January 1, 1962
Creator: Royce, B S.H.
Partner: UNT Libraries Government Documents Department
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THE ELECTRON THEORY OF SIMPLE METALS AND ALLOYS

Description: The successes and difficulties of the Bloch model of a metal are briefly reviewed, and the Landau quasi-particle theory amd the pseudopotential theory are briefly discussed. These two notions are made the basis for a revised version of the Bloch model that avoids the conceptual difficulties of the original model, while retaining and explaining its appealing features. Well known empirical generalizations concerning the relative importance of conduction-electron density, composition, and structur… more
Date: January 1, 1963
Creator: Cohen, M H
Partner: UNT Libraries Government Documents Department
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