Molecular dynamics computer simulations of sputtering of benzene sample by large mixed Lennard-Jones clusters

doi:10.1016/j.nimb.2013.10.060

Molecular dynamics computer simulations of sputtering ...

Bibliographic description

punktacja MNiSW [2014 A]: 25

title:	Molecular dynamics computer simulations of sputtering of benzene sample by large mixed Lennard-Jones clusters
author:	Rzeźnik Łukasz, Postawa Zbigniew
Journal title:	Nuclear Instruments and Methods in Physics Research. Section B, Beam Interactions with Materials and Atoms
Title of volume:	17th International Conference on Radiation Effects in Insulators (REI)
volume:	326
date of publication:	2014
pages:	185-189
ISSN:	0168-583X
eISSN:	1872-9584
DOI:	10.1016/j.nimb.2013.10.060
language:	English
Journal language:	English
abstract in english:	Molecular dynamics computer simulations have been used to probe the role of the projectile composition on the emission efficiency and the sample damage. A benzene crystal was bombarded by 15 keV large heterogeneous noble gas clusters containing 2953 atoms. The projectiles used in this study are two-component clusters composed of Ne, Ar, and Kr atoms directed at 0° and 60° relative to the surface normal. It has been found that for normal incidence the total sputtering yield decreases with the projectile mass, whereas for 60° impact angle the yield increases with this quantity. For both 0° and 60° impact angles the observed sputtering yield for heterogeneous clusters cannot be calculated as a sum of sputtering yields obtained for homogeneous projectiles multiplied by the concentration of each component in the multi-component cluster. The difference in deposition scenarios of the primary kinetic energy is shown to be responsible for the observed behavior of the total sputtering yield.
keywords in english:	computer simulations, sputtering, large noble gas projectiles, SIMS, organic solids
affiliation:	Wydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut Fizyki im. Mariana Smoluchowskiego
type:	journal article
subtype:	academic paper