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- W2080343596 abstract "Abstract The neutron diffusion parameters of heavy water were determined from measurements taken in spherical aluminum shells with use of the pulsed neutron source method. The decay of the neutron population was monitored using a multichannel analyzer, with a 10 μsec channel width, and a 3He detector positioned at two locations within each sphere. The time-asymptotic decay constant for each sphere was calculated from the experimental data using the channel-dropping method. Values of the geometric buckling were calculated using the average sphere radius, with a wall-thickness correction, and two methods of calculating the extrapolation length. These methods were based on the formulations used by Dorning (method D) and Elkert (method E). This resulted in two values of the buckling for each sphere. Temperature and purity corrections were made to the decay constants, and the diffusion parameters were obtained by fitting to the customary expansion for the decay constant in the buckling. The results were as follows: For method D buckling: 1. D0 = 2.09±0.01 × 105 cm2/sec 2. C = 6.85±0.55 × 105 cm4/sec 3. F = 20 ± 5 × 105 cm6/sec For method E buckling: 1. D0 = 2.02±0.01 × 105 cm2/sec 2. C = 6.44±0.45 × 105 cm4/sec 3. F = 24± 5 × 105 cm6/sec." @default.
- W2080343596 created "2016-06-24" @default.
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- W2080343596 date "1969-12-01" @default.
- W2080343596 modified "2023-09-26" @default.
- W2080343596 title "Effects of buckling calculation on diffusion parameter measurements for heavy water in spheres" @default.
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- W2080343596 doi "https://doi.org/10.1016/0029-554x(69)90039-1" @default.
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