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Title:Simulation of aluminum sheet under proton radiation
Author(s):Kononov, Alina
Abstract:This is a visualization of the electron density in a simulation of a proton traversing an aluminum sheet. The electrons within the aluminum sheet and the electron cloud around the exiting proton (direction of motion indicated by the arrow) are represented by the white and yellow regions of high electron density on the left side of the image. Orange and red shades show electrons ejected from the aluminum in response to energy deposited in the material by the proton. All lengths are in units of the Bohr radius (0.0529 nm). I am investigating how the electronic response depicted here (specifically, the number of electrons ejected from the material and the number of electrons transferred to the projectile) depends on the type of projectile, the projectile's velocity and trajectory, and the type of target material and its thickness. Understanding the behavior of materials under radiation is crucial for improving techniques for materials imaging and processing and developing materials for nuclear and space applications. The simulations are performed using time-dependent density functional theory and Ehrenfest dynamics, methods that approximate non-equilibrium quantum dynamics, on supercomputers such as Blue Waters at the National Center for Supercomputing Applications.
Issue Date:2017
Rights Information:Copyright 2017 Alina Kononov
Date Available in IDEALS:2017-04-21

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