Molecular Dynamics Simulations of Energetic Ar Cluster Bombardment of Ag(111)

• Authors: G. Palka , L. Rzeznik , R. Paruch , Z. Postawa
• Languages of publication: EN

Abstracts

EN

Large-scale molecular dynamics computer simulations are used to investigate the dynamics of material ejection during high-energy Ar_n cluster bombardment of Ag(111) at normal incidence. The silver sample containing 7 million atoms is bombarded with Ar_n projectiles (n=45-30000) with kinetic energy spanning from a few keV up to 1 MeV. Such a wide range of projectile parameters allows probing processes taking place during low-density collision cascade as well as during high-density events characteristic of micrometeorite bombardment in space. The material modifications and total sputtering yield of ejected particles are investigated. While at low-energy impacts, ejection of individual silver atoms is the main emission channel, the ejection of large clusters from the corona of the created crater dominates for the high-energy impacts.

Keywords

EN

68.49.Sf; 82.80.Ms; 83.10.Rs; 79.20.Rf

Discipline

• 82.80.Ms: Mass spectrometry (including SIMS, multiphoton ionization and resonance ionization mass spectrometry, MALDI)
• 79.20.Rf: Atomic, molecular, and ion beam impact and interactions with surfaces(for atomic and molecular beam techniques, see 37.20.+j; see also 34.35.+a Interactions of atoms and molecules with surfaces)
• 83.10.Rs: Computer simulation of molecular and particle dynamics
• 68.49.Sf: Ion scattering from surfaces (charge transfer, sputtering, SIMS)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2013
• Volume: 123
• Issue: 5
• Pages: 831-833

Dates

published

2013-05

Contributors

author

G. Palka

• Institute of Physics, Jagiellonian University, Kraków, Poland

author

L. Rzeznik

• University of Information Technology and Management, Rzeszów, Poland

author

R. Paruch

• Institute of Physics, Jagiellonian University, Kraków, Poland

author

Z. Postawa

• Institute of Physics, Jagiellonian University, Kraków, Poland

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Identifiers

DOI

10.12693/APhysPolA.123.831