L1 Report for the Enhanced Surveillance Campaign Experimental Benchmarking of Pu Electronic Structure

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The objective of this work is to develop and/or apply advanced diagnostics to the understanding of aging of Pu. Advanced characterization techniques such as photoelectron and x-ray absorption spectroscopy will provide fundamental data on the electronic structure of Pu phases. These data are crucial for the validation of the electronic structure methods. The fundamental goal of this project is to narrow the parameter space for the theoretical modeling of Pu aging. The short-term goal is to perform experiments to validate electronic structure calculations of Pu. The long-term goal is to determine the effects of aging upon the electronic structure of ... continued below

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PDF-file: 22 pages; size: 4.5 Mbytes

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Tobin, J G; Chung, B W; Moore, K T; Yu, S; Schwartz, A J; Wall, M A et al. January 30, 2006.

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Description

The objective of this work is to develop and/or apply advanced diagnostics to the understanding of aging of Pu. Advanced characterization techniques such as photoelectron and x-ray absorption spectroscopy will provide fundamental data on the electronic structure of Pu phases. These data are crucial for the validation of the electronic structure methods. The fundamental goal of this project is to narrow the parameter space for the theoretical modeling of Pu aging. The short-term goal is to perform experiments to validate electronic structure calculations of Pu. The long-term goal is to determine the effects of aging upon the electronic structure of Pu. Many of the input parameters for aging models are not directly measurable. These parameters will need to be calculated or estimated. Thus a First Principles-Approach Theory is needed, but it is unclear what terms are important in the Hamiltonian (H{Psi} = E{Psi}). Therefore, experimental data concerning the 5f electronic structure are needed, to determine which terms in the Hamiltonian are important. The data obtained in this task are crucial for reducing the uncertainty of Task LL-01-developed models and predictions. The data impact the validation of electronic structure methods, the calculation of defect properties, the evaluation of helium diffusion, and the validation of void nucleation models. The importance of these activities increases if difficulties develop with the accelerating aging alloy approach.

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PDF-file: 22 pages; size: 4.5 Mbytes

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  • Report No.: UCRL-TR-218834
  • Grant Number: W-7405-ENG-48
  • DOI: 10.2172/900152 | External Link
  • Office of Scientific & Technical Information Report Number: 900152
  • Archival Resource Key: ark:/67531/metadc886682

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • January 30, 2006

Added to The UNT Digital Library

  • Sept. 22, 2016, 2:13 a.m.

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  • Nov. 29, 2016, 4:46 p.m.

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Tobin, J G; Chung, B W; Moore, K T; Yu, S; Schwartz, A J; Wall, M A et al. L1 Report for the Enhanced Surveillance Campaign Experimental Benchmarking of Pu Electronic Structure, report, January 30, 2006; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc886682/: accessed September 25, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.