Technical Report Archive & Image Library (TRAIL) - 4 Matching Results
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- Technical Progress Report
- "Discussions on the high-speed computer program include test control design, core storage unit, magnetic drums and tapes, paper tapes, slow circuits, exponent and main arithmetic units, flow charts for arithmetic control, and speed independent designs. Work done in the circuit research program includes flow-gating systems tests and two-wire low swing circuits. Mathematical methods are described for experiments with a floating-point differential equation solver. Switching circuit theory developments involve simplification techniques for Boolean functions, estimates of the maximum number of prime implicants in Booleans functions oi N variables, a formal algebra for linear graphs, and a technique for obtaining all maximum nodal normal subgraphs of a linear graph. Automatic reduction methods are described for bubble chamber photographic data. The operation, programming, and usages of the ILLIAC and the IBM-650 are described."
- Technical Progress Report
- "Discussions on the high-speed computer program include test control design, core storage unit, magnetic drums and tapes, paper tapes, slow circuits, exponent and main arithmetic units, flow charts for arithmetic control, and speed independent designs. Work done in the circuit research program includes flow-gating systems tests and two-wire low swing circuits. Mathematical methods are described for experiments with a floating-point differential equation solver. Switching circuit theory developments involve simplification techniques for Boolean functions, estimates of the maximum number of prime implicants in Booleans functions oi N variables, a formal algebra for linear graphs, and a technique for obtaining all maximum nodal normal subgraphs of a linear graph. Automatic reduction methods are described for bubble chamber photographic data. The operation, programming, and usages of the ILLIAC and the IBM-650 are described."
- A Kinetic Study of CO2 Desorption From Thoria
- "Desorption rate curves were obtained for carbon dioxide absorbed on thoria at temperatures of 550C, 450C, 350C, 250C, 150C, and 50C. The gas were found to desorb according to a logarithmic law following initial rapid desorption. The logarithmic law may be shown to be operative if the activation energy for desorption varies linearly with surface converge. A large apparent negative entropy of activation for desorption supports the fact that the adsorbed CO2 is in a mobile state."
- A Monte Carlo Study of Neutron Thermalization
- "The slowing down of neutrons from fission to absorption energies in a homogeneous medium has been treated by a Monte Carlo method. thermalization by elastic collisions in both light and heavy water was computed on an IBM 650. One-sixth the mean-square distance travelled by the neutrons was interpreted as the migration area. This quantity was analyzed to give the age, t, both above and below the indium resonance, and the thermal diffusion constant. D, as functions of the moderator temperature, the effective moderator mass, the moderator composition, the scattering the absorption laws, and the energy distribution of the neutron source. The migration area from the fission eneergy source to below the indium resonance energy (1.46 ov) was found ro be 27.4cm^2 for H2O and 120 cm^2 for D2O. By varying the absorption cross section, the migration area from the indiu, resonance energy to absorption of the neutrons could be decompsed into components D/L^2 and Ts. D and Ts were found to be 0.19 cm and 0.77 cm^2 respectively for H2O and 0.87 cm and 20 cm^2 for D2O. D was found to increase with the thermal agitation of the moderator at the rate of 0.15$/C for H2O and 0.14%/C for D2O. Neutron energy distributions found from the scattering frequency agree with those derived by analytical methods."