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"Ages" of the Sikhote Alin Meteorite

Description: The potassium-argon age of the Siknote Alin iron raeteorite was determined. The value is 1.7 plus or minus 0.2 x 10/sup 9/ years. Previous lead data suggest an age of 4.6 x 10/sup 9/ years. The date of solidification may be the sum of these two ages. (auth)
Date: January 1, 1962
Creator: Sisher, D. E.
Partner: UNT Libraries Government Documents Department
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LOS ALAMOS NUCLEAR ROCKET PROJECT ROVER

Description: Developments in Project Rover are reviewed. History, considerations in reactor design, materials problems, and reactor construction and test are discussed. (M.C.G.)
Date: January 1, 1962
Creator: MacMillan, Donald P.
Partner: UNT Libraries Government Documents Department
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AN ANALYSIS OF H$sup 3$-THYMIDINE DISTRIBUTION THROUGHOUT THE SHOOT APICAL MERISTEM OF ARABIDOPSIS THALIANA (L.) HEYNH

Description: Sequential autoradiographed sections through the shoot apical meristem of Arabidopsis thaliana treated for six hours with a solution of H/sup 3/- thymidine in combination with 0.1% Tween 20 and dilute mineral solution reveal a differential pattern of labeling, indicative of differential rates of DNA synthesis. This pattern corresponds to the histological zonation of the apex and reveals a sub-apical block of cells in which the amount of incorporation is significantly lower than in the adjacent … more
Date: January 1, 1962
Creator: Brown, J. A. M.; Miksche, J. P. & Smith, H. H.
Partner: UNT Libraries Government Documents Department
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The Angular Dependence of Thermal Neutron Spectra in Lattices

Description: This technical report discusses techniques that have been developed for "computing the angular thermal flux spectrum emerging from a lattice. These methods are applied to water lattices and it is found that the computed spectra are sensitive to the geometrical description of the lattice, but insensitive to the anisotropic scattering by water. Comparisons with measured spectra indicate that corrections for gradients and the finite size of the experimental lattice are important." -- from abstract… more
Date: January 1962
Creator: Honeck, Henry C. & Takahashi, Hiroshi
Partner: UNT Libraries Government Documents Department
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BEAM CURRENT INTEGRATOR

Description: The design and operation of a beam current integrntor are described, and the theory of operation is discussed. The instrument has two channels. The console channel is designed to measure the accumulation of charge received by a target during a period of a day no matter what the range used in the experimenter's chaanel. An analysis indicated that this unit will measure the accumulation of charge by a target to an accuracy of 0.1215% assuming that the constant error due to shorting the integratin… more
Date: January 1, 1962
Creator: Jacobs, J.
Partner: UNT Libraries Government Documents Department
open access

The Behavior of Iodine in Graphite

Description: No Description Available.
Date: January 1, 1962
Creator: Salzano, F. J.
Partner: UNT Libraries Government Documents Department
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Calculation of Distance Factors for Power and Test Reactor Sites

Description: >Reference information and guidance on procedures and basic assumptions related to reactor siting are presented which can be used to calculate distance requirements consistent with current siting practices. A single method of competing distances and exposure for a general class of reactors is giveo. (J.R.D)
Date: January 1, 1962
Creator: DiNunno, J. J.; Anderson, F. D.; Baker, R. E. & Waterfield, R. L.
Partner: UNT Libraries Government Documents Department
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Calculation of Reactivity Changes in HIFAR Due to Fuel and Poison Changes

Description: Empirical methods are given for calculating reactivity changes in HIFAR with changes in fuel loading, poison concentration, and temperature variations. The procedures are derived from the analysis of typical operating programs, reinforced by analogue computer analysis of variation of the important fission product poisons Xenon 135 and Samarium 149.
Date: January 1962
Creator: McKenzie , C. D. & Connolly , J. W.
Partner: UNT Libraries Government Documents Department
open access

Calculation of the Pulse-Height Response of NaI(Tl) Scintillation Counters

Description: A Monte Carlo calculation to determine the pulse-height response of NaI(Tl) scintillation counters to gamma rays is described. Comparisons of several calculations with experiments using 3-in.-dia by 3-in.-high crystals for source energies from 0.32 to 7.48 Mev are presented and show good agreement at large pulse heights. At small pulse heights the calculations underestimated the experimental data and indicated that background radiation can contribute significantly to the experimental results. A… more
Date: January 1, 1962
Creator: Zerby, C. D. & Moran, H. S.
Partner: UNT Libraries Government Documents Department
open access

THE CALORIMETRY OF COMBUSTIONS AND RELATED REACTIONS: INORGANIC REACTIONS

Description: A review is presented of calorimetric measurements of the heats of combustion and other reactions. The precision of the measurements is discussed, and possible sources of error in combustion calorimetry are considered. Measurement of the heats of formation of the oxides and other compounds is also discussed. Recent developments in calorimetry are described briefly, including the rotating bomb calorimeter, use of gases other than oxygen, fluorine bomb calorimetry, and combustion bomb with window… more
Date: January 1, 1962
Creator: Holley, C.E. Jr.
Partner: UNT Libraries Government Documents Department
open access

Columbia River temperatures

Description: No Description Available.
Date: January 1, 1962
Creator: Baranowski, F.P.
Partner: UNT Libraries Government Documents Department
open access

Combined Forced and Free Turbulent Convection in a Vertical Tube

Description: An analytical study was made of turbulent heat transfer in a vertical circular tube under the conditions of combined forced and free convection with uniform heat flux at the wall.
Date: January 1, 1962
Partner: UNT Libraries Government Documents Department
open access

Comparison of Measurements in Above-Ground and Below-Ground Structures From Simulated and Actual Fallout Radiation

Description: An experimental study designed to provide a basis for estimating protection against fallout radiation was made on two types of structures at the Nevada Test Site. The two buildings studied were a lightly constructed building with a basement, and an underground group shelter. An idealized fallout radiation field was simulated by the use of a sealed radioactive Co/sup 60/ source that was pumped at a uniform speed through a long length of flexible tubing evenly distributed over the area of interes… more
Date: January 1, 1962
Creator: Burson, Z. G.
Partner: UNT Libraries Government Documents Department
open access

Control of Tritium Health Hazards at the Savannah River Plant

Description: The essential components of the program for the control of tritium hazards at Savannah River include radiological engineering, training of operating personnel in techniques of protection, protective clothing, control of surface and air contamination, bioassay, and environmental monitoring. Rapid change of air in process areas and the continuous measurement of tritium in air are two important facets of the protection program. Workers in a tritium atmosphere wear inexpensive, polyvinyl suits whic… more
Date: January 1, 1962
Creator: Reinig, W. C. & Albenesius, E. L.
Partner: UNT Libraries Government Documents Department
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Critical Studies of a Fast Reactor Core Containing Depleted Uranium and Sodium as Diluents. (ZPR-III Assembly 36)

Description: Critical studies were performed with a metallic, fast reactor core designed to snvestigate the effects of replacing highly absorbing U/sup 238/ diluent with high-scattering, lowabsorbing sodium diluent. The fuel was 15.7 wt% enriched U/sup 235/ and the core contained 18.2 vol% sodium and 12.68 vol% stainless steel. The experimental program was designed to measure the effect of the material replacement on spectral indices, which consisted of the standard fission ratios, foil irradiations, and a … more
Date: January 1962
Creator: Gasidlo, J. M.; Long, J. K. & McVean, R. L.
Partner: UNT Libraries Government Documents Department
open access

CRYOGENIC TECHNOLOGY IN THE NUCLEAR ROCKET PROGRAM

Description: Nuclear rocket development problems have resulted primarily from the stringent operational requirements of designing a reactor with optimized parameters of core temperature, rapid start-up capability, ability to withstand extreme temperature gradients, and minimum weight. Disasterous consequences resulting from the entrance of appreciable amounts of liquid hydrogen in the reactor core during start up was feared. Efforts to program the start-up such as to increase the reactor power simuitaneousl… more
Date: January 1, 1962
Creator: Hammel, E.F.
Partner: UNT Libraries Government Documents Department
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