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Identification of Unknown Interface Locations in a Source/Shield System Using the Mesh Adaptive Direct Search Method [electronic resource].

Published
Los Alamos, N.M. : Los Alamos National Laboratory, 2012.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Additional Creators
Los Alamos National Laboratory and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
The Levenberg-Marquardt (or simply Marquardt) and differential evolution (DE) optimization methods were recently applied to solve inverse transport problems. The Marquardt method is fast but convergence of the method is dependent on the initial guess. While it has been shown to work extremely well at finding an optimum independent of the initial guess, the DE method does not provide a global optimal solution in some problems. In this paper, we apply the Mesh Adaptive Direct Search (MADS) algorithm to solve the inverse problem of material interface location identification in one-dimensional spherical radiation source/shield systems, and we compare the results obtained by MADS to those obtained by Levenberg-Marquardt and DE.
Report Numbers
E 1.99:la-ur-12-22365
la-ur-12-22365
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Note
Published through SciTech Connect.
06/20/2012.
"la-ur-12-22365"
2012 American Nuclear Society Annual Meeting ; 2012-06-24 - 2012-06-28 ; Chicago, Illinois, United States.
Favorite, Jeffrey A.; Armstrong, Jerawan C.
Funding Information
AC52-06NA25396
View MARC record | catkey: 14103077