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Animated molecular dynamics simulations of energetic mixed cluster impacts

Shapiro, M. H. and Tosheff, G. A. and Tombrello, T. A. (1994) Animated molecular dynamics simulations of energetic mixed cluster impacts. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 88 (1-2). pp. 81-85. ISSN 0168-583X. https://resolver.caltech.edu/CaltechAUTHORS:20141028-090546675

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Abstract

Molecular dynamics and computer animation techniques have been used to investigate atom ejection and damage caused by the impact of energetic, uniformly mixed Al_32Au_31 clusters on 12-layer, 3750-atom Au(100) targets at total cluster energies of 5, 10, 50, 100, and 200 keV. At all incident energies we find that a significant fraction of the aluminum is ejected from the cluster on impact. At the two lowest bombarding energies damage to the target is limited generally to the primary impact zone, and crystallinity is retained throughout most of the the target. At the higher bombarding energies significant damage occurs throughout the central region of the target, and crystallinity is lost throughout the entire target. In contrast to collision cascades initiated by single ions, those initiated by energetic clusters are observed to be highly nonlinear (essentially all the atoms in the cascade region are in motion) and to propagate through the target with relatively uniform wavefronts.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1016/0168-583X(94)96084-4DOIArticle
http://www.sciencedirect.com/science/article/pii/0168583X94960844PublisherArticle
Additional Information:© 1994 Published by Elsevier B.V. Supported in part by SF Grant DMR90-11230 at Caltech, and by NSF Grant DMR90-02532 at CSUF.
Funders:
Funding AgencyGrant Number
NSFDMR90-11230
NSFDMR90-02532
Issue or Number:1-2
Record Number:CaltechAUTHORS:20141028-090546675
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20141028-090546675
Official Citation:Shapiro, M. H., Tosheff, G. A., & Tombrello, T. A. (1994). Animated molecular dynamics simulations of energetic mixed cluster impacts. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 88(1–2), 81-85. doi: http://dx.doi.org/10.1016/0168-583X(94)96084-4
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:50912
Collection:CaltechAUTHORS
Deposited By: Jason Perez
Deposited On:28 Oct 2014 18:48
Last Modified:03 Oct 2019 07:28

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