5 research outputs found
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Los Alamos benchmarks: calculations based on ENDF/B-V data
The new and revised benchmark specifications for nine Los Alamos National Laboratory critical assemblies are used to compute the entire set of parameters that were measured in the experiments. A comparison between the computed and experimental values provides a measure of the adequacy of the specifications, cross sections, and physics codes used in the calculations
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Stability of the low degree five minute solar oscillations
In this paper we discuss the decay rate for many of the low degree p modes observed as 5 minute oscillations of the sun. This report is an expanded version of the presentation at Snowmass. These theoretical results use the completely nonadiabatic linear theory of Saio and Cox (1980). Our solar model is based on the evolution results of Christensen-Dalsbgaard (1982). Equation of state and opacity data come from the Los Alamos Opacity Library of Huebner, Merts, Magee, and Argo (1977). We compute rates for modes ranging from radial (l = 0) to the nonradial ones with l = 5 for overtones 10 through 28
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Differences between LASL- and ANL-processed cross sections. [MINX/1DX vs ETOE-2/MC/sup 2/-2]
As part of the Los Alamos Scientific Laboratory (LASL) cross-section processing development, LASL cross sections and results from MINX/1DX system are compared to the Argonne National Laboratory cross sections and results from the ETOE-2/MC/sup 2/-2 system for a simple reactor problem. Exact perturbation theory is used to establish the eigenvalue effect of every isotope group cross-section difference. Cross sections, cross-section differences, and their eigenvalue effects are clearly and conveniently displayed and compared on a group-by-group basis
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Fast reactor cross-section processing codes: is there a dollars worth of difference between them
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