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Simulation of sputtering induced by high energy gold clusters

Shapiro, M. H. and Tombrello, T. A. (1999) Simulation of sputtering induced by high energy gold clusters. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 152 (2-3). pp. 221-231. ISSN 0168-583X. doi:10.1016/S0168-583X(99)00141-X. https://resolver.caltech.edu/CaltechAUTHORS:20141020-084714816

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Abstract

Recently Andersen et al. reported exceptionally large nonlinear sputtering yields following the bombardment of gold targets with small, high energy gold clusters (H.H. Andersen, A. Brunelle, S. Della-Negra, J. Depauw, Y. LeBeyec, Phys. Rev. Lett. 80 (1998) 5433). Nonlinearities up to ∼1000% were observed for Au_5 clusters with a total energy of 800 keV. We have carried out molecular dynamics simulations on a massively parallel computer to model the Au_n → Au system. The results suggest that both collisional and thermal spike mechanisms contribute to the large nonlinear yields observed by Andersen et al. Our simulations also indicate that sputtering statistics are very important at high cluster bombarding energies. A substantial fraction of the simulated impacts produce no sputtered atoms, while individual sputtering events producing very large numbers of sputtered atoms contribute significantly to the total sputtering yield at high energy.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1016/S0168-583X(99)00141-X DOIArticle
http://www.sciencedirect.com/science/article/pii/S0168583X9900141XPublisherArticle
Additional Information:© 1999 Elsevier Science B.V. Received 6 October 1998: received in revised form 19 January 1999. Supported in part by the National Science Foundation (grants DMR-9312468 and DMR-9712538 at Cal State Fullerton and DMR-9730893 at Caltech).
Funders:
Funding AgencyGrant Number
NSFDMR-9312468
NSFDMR-9712538
NSFDMR-9730893
Issue or Number:2-3
DOI:10.1016/S0168-583X(99)00141-X
Record Number:CaltechAUTHORS:20141020-084714816
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20141020-084714816
Official Citation:M.H Shapiro, T.A Tombrello, Simulation of sputtering induced by high energy gold clusters, Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Volume 152, Issues 2–3, May 1999, Pages 221-231, ISSN 0168-583X, http://dx.doi.org/10.1016/S0168-583X(99)00141-X. (http://www.sciencedirect.com/science/article/pii/S0168583X9900141X)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:50527
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:20 Oct 2014 15:53
Last Modified:10 Nov 2021 18:57

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