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Radioactivity Induced in Commercial Materials
Six structural materials (aluminum 2S, aluminum 72S, copper, iron, steel, lead and bismuth) were irradiated for about 100 kilowatt hours in the center of the Argonne pile. The alpha and gamma decays were then followed for 130 days on Geiger counters and are presented here graphically as number of rays per minute per gram per kilowatt hour vs. time of decay. A quantitative interpretation of the gamma-ray decay curves gave fair agreement with the chemical analysis of impurities found in the materials.
Date:
February 12, 1944
Creator:
Seren, Leo, 1918-; Sturm, W.; Moyer, W.; Miller, G. & Jordan, W.
System:
The UNT Digital Library
Eta Temperature Effect
The temperature coefficient of eta has been measured with the thermal column of the Argonne pile using uranium foils of different isotopic ratios. The temperature change was effected by filtering neutrons through silver. The measured fractional change per degree centigrade is [formula].
Date:
February 25, 1944
Creator:
Bragdon, E. W.; Hughes, D. & Marshall, John
System:
The UNT Digital Library
Recalculation of the Critical Size and Multiplication Constant of a Homogeneous UO2 - D2O Mixtures
The multiplication constant and optimal concentration of a slurry pile is recalculated on the basis of Mitchell's recent experiments on resonance absorption. The smallest chain reacting unit contains 45 to 55 m3 of D2O.
Date:
February 11, 1944
Creator:
Wigner, Eugene Paul, 1902-1995; Weinberg, Alvin Martin, 1915-2006 & Stephenson, J.
System:
The UNT Digital Library
Calculations for Some Pile Shapes of Which the Boundaries are Partly Spherical
Some methods for calculating the k requirements of various shaped piles are indicated, with particular reference to the shape of the tank in the homogeneous plant.
Date:
February 25, 1944
Creator:
Young, G.; Murray, F. H. & Castle, H.
System:
The UNT Digital Library