Formation of nanocavities in the surface layer of an aluminum target irradiated by a femtosecond laser pulse

被引：0
|
作者：
S. I. Ashitkov
N. A. Inogamov
V. V. Zhakhovskii
Yu. N. Emirov
M. B. Agranat
I. I. Oleinik
S. I. Anisimov
V. E. Fortov
机构：
[1] Russian Academy of Sciences,Joint Institute for High Temperatures
[2] Russian Academy of Sciences,Landau Institute for Theoretical Physics
[3] University of South Florida,Department of Physics
[4] University of South Florida,Nanomaterials and Nanomanufacturing Research Center
来源：
JETP Letters | 2012年 / 95卷
关键词：
JETP Letter; Femtosecond Laser Pulse; Ablation Threshold; Residual Deformation; Bubble Nucleation;
D O I：
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学科分类号：
摘要：
It has been revealed experimentally that nanocavities remain inside a surface layer of aluminum after action of a femtosecond laser pulse. This result is in agreement with numerical simulation. A detailed picture of melting, formation of expansion and compression waves, and bubble nucleation in the stretched melt has been reconstructed through atomistic simulation. It has been shown that the bubbles do not fully collapse but remain as frozen disk-shaped nanocavities upon recrystallization of the melt. The formation of a porous metal with small voids is very important for understanding the physics of laser exposure and may have significant applications.
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页码：176 / 181
页数：5
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