Title of article :
Synthesis of nanoclusters by nanosecond laser ablation:
Direct simulation Monte Carlo modelling
Author/Authors :
Tatiana E. Itina، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2006
Abstract :
Collisional processes leading to the formation of nanoparticles in a laser-ablated plume are numerically simulated with the aid of an atomisticlevel
model based on direct simulation Monte Carlo (DSMC) method. The formation of nanoparticles in nanosecond laser ablation of a monoatomic
target is investigated in the presence of an inert background gas. The DSMC procedure is modified in order to account for numerous plume
species and to describe several reactions (i.e., recombination/dissociation, sticking, evaporation) taking place in the plume and affecting the size
and spatial distribution of the produced nanoclusters. Calculation results allow us to visualize the nanoparticles and to correlate their space
distributions with plume dynamics. In addition, cluster size distributions are investigated at different pressures. The effects of the background gas
on cluster formation within the plume are furthermore shown
Keywords :
Clusters , Nanoparticles , Nanosecond laser ablation , simulation
Journal title :
Applied Surface Science
Journal title :
Applied Surface Science