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Title: Collision-spike sputtering of Au nanoparticles

Journal Article · · Nanoscale Research Letters
 [1];  [2]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Univ. Kaiserslautern, Kaiserslautern (Germany)

Ion irradiation of nanoparticles leads to enhanced sputter yields if the nanoparticle size is of the order of the ion penetration depth. While this feature is reasonably well understood for collision-cascade sputtering, we explore it in the regime of collision-spike sputtering using molecular-dynamics simulation. For the particular case of 200-keV Xe bombardment of Au particles, we show that collision spikes lead to abundant sputtering with an average yield of 397 ± 121 atoms compared to only 116 ± 48 atoms for a bulk Au target. Only around 31 % of the impact energy remains in the nanoparticles after impact; the remainder is transported away by the transmitted projectile and the ejecta. As a result, the sputter yield of supported nanoparticles is estimated to be around 80 % of that of free nanoparticles due to the suppression of forward sputtering.

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC52-06NA25396
OSTI ID:
1222631
Alternate ID(s):
OSTI ID: 1236705
Report Number(s):
LA-UR-15-21715; PII: 1009
Journal Information:
Nanoscale Research Letters, Vol. 10, Issue 1; ISSN 1931-7573
Publisher:
SpringerCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 23 works
Citation information provided by
Web of Science

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Preface
  • Wambersie, André; DeLuca, Paul M.; Seltzer, Stephen M.
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Cited By (4)

Interaction of multiply charged ions with large free silver nanoparticles: Multielectron capture, fragmentation, and sputtering phenomena journal August 2019
Distribution of Paramagnetic Fe2O3/SiO2–Core/Shell Nanoparticles in the Rat Lung Studied by Time-of-Flight Secondary Ion Mass Spectrometry: No Indication for Rapid Lipid Adsorption journal July 2018
Sputtering of silicon nanopowders by an argon cluster ion beam journal January 2019
Anisotropic Phase Transformation in B2 Crystalline CuZr Alloy journal August 2019

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