TY - JOUR
T1 - Photochemical induced effects in material ejection in laser ablation
AU - Yingling, Yaroslava G.
AU - Garrison, Barbara J.
N1 - Funding Information:
This work is supported by Air Force Office of Scientific Research through the Medical Free Electron Laser Program, Multidisciplinary University Research Initiative, and Chemistry Division of the National Science Foundation. The computational support was provided by the Center for Academic Computing at Penn State University. We thank Leonid Zhigilei for helpful discussions and reading the manuscript.
PY - 2002/10/4
Y1 - 2002/10/4
N2 - Molecular dynamics simulations are used to investigate the effect of photochemical processes on molecular ejection mechanisms in laser ablation of organic solids. The presence of photochemical decomposition processes and subsequent chemical reactions changes the temporal and spatial energy deposition profile from pure photothermal ablation. A strong and broad acoustic wave propagation results and this pressure wave in conjunction with the temperature increase in the absorbing region causes the ejection of hot massive molecular clusters. These massive clusters later disintegrate in the plume into the smaller clusters and monomers due to ongoing chemical reactions.
AB - Molecular dynamics simulations are used to investigate the effect of photochemical processes on molecular ejection mechanisms in laser ablation of organic solids. The presence of photochemical decomposition processes and subsequent chemical reactions changes the temporal and spatial energy deposition profile from pure photothermal ablation. A strong and broad acoustic wave propagation results and this pressure wave in conjunction with the temperature increase in the absorbing region causes the ejection of hot massive molecular clusters. These massive clusters later disintegrate in the plume into the smaller clusters and monomers due to ongoing chemical reactions.
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U2 - 10.1016/S0009-2614(02)01327-1
DO - 10.1016/S0009-2614(02)01327-1
M3 - Article
AN - SCOPUS:0037020218
SN - 0009-2614
VL - 364
SP - 237
EP - 243
JO - Chemical Physics Letters
JF - Chemical Physics Letters
IS - 3-4
ER -