Application of parallel computing to the Monte Carlo simulation of electron scattering in solids: A rapid method for profile deconvolution

Romig, Jr, A D; Plimpton, S J; Myklebust, R L; Newbury, D E

Title: Application of parallel computing to the Monte Carlo simulation of electron scattering in solids: A rapid method for profile deconvolution

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Abstract

X-ray microanalysis by analytical electron microscopy (AEM) has proven to be a powerful tool for characterizing the spatial distribution of solute elements in materials. True compositional variations over spatial scales smaller than the actual resolution for microanalysis can be determined if the measured composition profile is deconvoluted. Explicit deconvolutions of such data, via conventional techniques such as Fourier transforms, are not possible due to statistical noise in AEM microanalytical data. Hence, the method of choice is to accomplish the deconvolution via iterative convolutions. In this method, a function describing the assumed true composition profile, calculated by physically permissible thermodynamic and kinetic modeling is convoluted with the x-ray generation function and the result compared to the measured composition profile. If the measured and calculated profiles agree within experimental error, it is assumed that the true compositional profile has been determined. If the measured and calculated composition profiles are in disagreement, the assumptions in the physical model are adjusted and the convolution process repeated. To employ this procedure it is necessary to calculate the x-ray generation function explicitly. While a variety of procedures are available for calculating this function, the most accurate procedure is to use Monte Carlo modeling of electron scattering.more » 9 refs., 1 fig.« less

Authors:

Romig, Jr, A D; Plimpton, S J ^[1]; Myklebust, R L; Newbury, D E ^[2]

Sandia National Labs., Albuquerque, NM (USA)
National Inst. of Standards and Technology, Gaithersburg, MD (USA)

Publication Date:: Mon Jan 01 00:00:00 EST 1990

Research Org.:: Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Sponsoring Org.:: DOE/ER

OSTI Identifier:: 7093926

Report Number(s):: SAND-90-0632C; CONF-900877-2
ON: DE90009322

DOE Contract Number:: AC04-76DP00789

Resource Type:: Conference

Resource Relation:: Conference: 12. international congress for electron microscopy, Seattle, WA (USA), 12-18 Aug 1990

Country of Publication:: United States

Language:: English

Subject:: 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 74 ATOMIC AND MOLECULAR PHYSICS; 99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE; ELECTRON COLLISIONS; MONTE CARLO METHOD; COMPUTERIZED SIMULATION; PARALLEL PROCESSING; SCATTERING; SOLIDS; THIN FILMS; COLLISIONS; FILMS; PROGRAMMING; SIMULATION; 656003* - Condensed Matter Physics- Interactions between Beams & Condensed Matter- (1987-); 640304 - Atomic, Molecular & Chemical Physics- Collision Phenomena; 990200 - Mathematics & Computers

Citation Formats


                    Romig, Jr, A D, Plimpton, S J, Myklebust, R L, and Newbury, D E. Application of parallel computing to the Monte Carlo simulation of electron scattering in solids: A rapid method for profile deconvolution.  United States: N. p., 1990. 
        Web.

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                    Romig, Jr, A D, Plimpton, S J, Myklebust, R L, & Newbury, D E. Application of parallel computing to the Monte Carlo simulation of electron scattering in solids: A rapid method for profile deconvolution.  United States.

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                    Romig, Jr, A D, Plimpton, S J, Myklebust, R L, and Newbury, D E. 1990.  
        "Application of parallel computing to the Monte Carlo simulation of electron scattering in solids: A rapid method for profile deconvolution".  United States.  https://www.osti.gov/servlets/purl/7093926.

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@article{osti_7093926,

  title        = {Application of parallel computing to the Monte Carlo simulation of electron scattering in solids: A rapid method for profile deconvolution},

  author       = {Romig, Jr, A D and Plimpton, S J and Myklebust, R L and Newbury, D E},

  abstractNote = {X-ray microanalysis by analytical electron microscopy (AEM) has proven to be a powerful tool for characterizing the spatial distribution of solute elements in materials. True compositional variations over spatial scales smaller than the actual resolution for microanalysis can be determined if the measured composition profile is deconvoluted. Explicit deconvolutions of such data, via conventional techniques such as Fourier transforms, are not possible due to statistical noise in AEM microanalytical data. Hence, the method of choice is to accomplish the deconvolution via iterative convolutions. In this method, a function describing the assumed true composition profile, calculated by physically permissible thermodynamic and kinetic modeling is convoluted with the x-ray generation function and the result compared to the measured composition profile. If the measured and calculated profiles agree within experimental error, it is assumed that the true compositional profile has been determined. If the measured and calculated composition profiles are in disagreement, the assumptions in the physical model are adjusted and the convolution process repeated. To employ this procedure it is necessary to calculate the x-ray generation function explicitly. While a variety of procedures are available for calculating this function, the most accurate procedure is to use Monte Carlo modeling of electron scattering. 9 refs., 1 fig.},

  doi          = {},

  url          = {https://www.osti.gov/biblio/7093926},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Mon Jan 01 00:00:00 EST 1990},

  month        = {Mon Jan 01 00:00:00 EST 1990}

}

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