Gas-phase segregation effects in pulsed laser desorption from binary targets

22 March 1993

journal article
research article
Published by American Physical Society (APS) in Physical Review Letters

Vol. 70 (12) , 1886-1889
https://doi.org/10.1103/physrevlett.70.1886

Abstract

Monte Carlo simulation is used to study the gas flow of particles laser desorbed from a binary target into a vacuum. Pulsed desorption off of a finite area is modeled by using a three-dimensional simulation algorithm. Our results show the formation of a desorption jet. For a thermal desorption mechanism, the light species is desorbed with a higher velocity than the heavy species, but accelerates the latter and focuses it toward the jet axis. These phenomena influence the composition of the desorption jet, and the angle and energy distribution of the desorbed particles.

Keywords

This publication has 17 references indexed in Scilit:

Gas flow dynamics in laser ablation deposition
Journal of Applied Physics, 1992
Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry of Biopolymers
Analytical Chemistry, 1991
Kinetic study of pulsed desorption flows into vacuum
Physical Review A, 1991
Laser Ablation Mechanisms and Applications
Published by Springer Nature ,1991
Pulsed-laser evaporation technique for deposition of thin films: Physics and theoretical model
Physical Review B, 1990
Monte Carlo simulations of gas-phase collisions in rapid desorption of molecules from surfaces
The Journal of Chemical Physics, 1987
Laser sputtering
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 1985
Laser sputtering
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 1985
Laser sputtering. Part II. The mechanism of the sputtering of Al2O3
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 1984
Atomic and ionic beam source utilizing pulsed laser blow off
Physics of Fluids, 1976