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Analyses of Decay Curves of Irradiated Plastics

Description: The following report covers the results of a general program that was conducted at the Oak Ridge National Laboratory to investigate the effects on plastic materials of exposure to radiation in the pile. In the investigation, several plastics were irradiated, and on removal from the pile, their rates of decay were determined by measurement of gamma activity in an ionization chamber.
Date: June 22, 1949
Creator: Saleeby, R. N.; Cheshire, J. R. & Jensen, W. P.
Partner: UNT Libraries Government Documents Department

Alpha Particle Detection and the A. C. Operated Detector "A" (Howler)

Description: Abstract: This discussion concerns the operation, construction, and servicing of an alpha rate meter of medium sensitivity (30,000 alpha particles full scale per minute) and good stability. The instrument is equipped with an oscillator which increases both in frequency and loudness as the alpha activity is increased. The oscillator circuit includes an anticipator which causes a change in frequency depending directly upon the rate of change of alpha activity. Maximum sensitivity is approximately 100 millivolts full scale. Grid current varies from 1 to 5 x 10^-14 amperes. A general discussion of time constants and accuracy is included. Tables of stopping power, ionization and alpha activity are appended.
Date: January 29, 1946
Creator: Neil, Hugh G.
Partner: UNT Libraries Government Documents Department

Analysis of Lid Tank Neutron Data for Lead and Iron

Description: Abstract: An analysis of the lid tank neutron data for Pb-H2O and Fe-H2O is made. "Effective" fast neutron cross sections for the metals are obtained. This is based on the "one collision theory" of shielding. Values are 3.4 barns for Pb and 2.0 barns for Fe. These compare very well with those obtained by Albert and Welton based on other lid tank data and another method of calculation.
Date: January 5, 1951
Creator: Podgor, S.
Partner: UNT Libraries Government Documents Department

6.70 EV Resonance in U²³⁸

Description: "Using the Brookhaven fast chopper, transmission curves were obtained for the 6.70 +/- .06 ev resonance in U238 using four different thicknesses of natural uranium metal." The measurements for the transmission curves are summarized in the table provided.
Date: November 9, 1953
Creator: Levin, Jules S.
Partner: UNT Libraries Government Documents Department

The Action of Oxygen on Activated Charcoal

Description: The following report provides information conducted with the purpose of ascertaining the effect of oxygen on activated charcoal at approximately one atmosphere by measuring the amount of CO2 formed over a known length of time.
Date: June 29, 1951
Creator: Bigelow, J. E.; Belaga, M. W. & Mulvihill, R. J.
Partner: UNT Libraries Government Documents Department

The Acute Radiotoxicity of Injected Na²⁴ for Mice and Rats

Description: The following report describes the results from studies based on the toxicity and metabolism of radioactive substances derived from uranium fission. Rats and mice were administered radioactive sodium and reactions and changes were studied.
Date: April 15, 1948
Creator: Finkle, R. D.; Snyder, R. H.; Kisieleski, Walter E.; Teresi, J.; Broido, A. & Tompkins, P. C.
Partner: UNT Libraries Government Documents Department

Activation Energy for Fission

Description: Abstract: The experimentally determined exponential dependence of spontaneous fission rate on Z^2/A has been used to derive an expression for the dependence of the fission activation energy on Z^2/A. This expression has been used to calculate the activation energy for slow neutron induced fission and photofission. The correlation with the experimental data on these types of fission seems to be quite good.
Date: August 29, 1952
Creator: Seaborg, Glenn T.
Partner: UNT Libraries Government Documents Department

Adiabatic Injection

Description: From introduction comments: The present analysis is intended to examine the relations for "adiabatic" injection in general from a different point of view.
Date: September 22, 1955
Creator: Linlor, William I., 1915-
Partner: UNT Libraries Government Documents Department

Abrasive Blasting for Cleaning Parts

Description: Abstract: A demonstration on August 22, 1945, showed that Alpha or Beta M or K parts, including insulators, can be well cleaned with a pressure-feed abrasive blaster. The abrasive is a slurry of alumina and water mixed with high velocity air in a special feed nozzle. The slurry is continuously recycled.
Date: September 1945
Creator: McWherter, Jack R. & Yerazunis, Stephen
Partner: UNT Libraries Government Documents Department

Ionium Recovery Plant Design Report: Topical Report

Description: From introduction: At the request of the AEC, a process was developed for the concentration of the thorium content of pitchblende raffinate cake, and a plant design was developed for the production of a thorium concentrate containing 5000 grams of ionium (thorium-230) per year. This report describes the experimental work and presents the design calculations based upon it.
Date: April 15, 1959
Creator: Edwards, R. M.; Fariss, R. H. & Werkema, R. G.
Partner: UNT Libraries Government Documents Department

Statistical Techniques Applied to Aerial Radiometric Surveys (STAARS): Principal Components Analysis User's Manual, Figure 8

Description: Clear film copy of figure 8 meant to be laid over figure 7 in a report regarding computer techniques for analyzing aerial radiometric surveys. The figure outlines numbered segments (explained on p. 35/36 of the report) that highlight specific geologic features in the area highlighted by the report.
Date: January 1981
Creator: Koch, C. D.; Pirkle, F. L. & Schmidt, J. S.
Location Info:
Partner: UNT Libraries Government Documents Department