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

被引：99

作者：

Ashitkov, S. I. ^{[1
]}

Inogamov, N. A. ^{[2
]}

Zhakhovskii, V. V. ^{[3
]}

Emirov, Yu. N. ^{[4
]}

Agranat, M. B. ^{[1
]}

Oleinik, I. I. ^{[3
]}

Anisimov, S. I. ^{[2
]}

Fortov, V. E. ^{[1
]}

机构：

[1] Russian Acad Sci, Joint Inst High Temp, Moscow 125412, Russia

[2] Russian Acad Sci, Landau Inst Theoret Phys, Chernogolovka 142432, Moscow Region, Russia

[3] Univ S Florida, Dept Phys, Tampa, FL 33620 USA

[4] Univ S Florida, Nanomat & Nanomfg Res Ctr, Tampa, FL 33620 USA

来源：

JETP LETTERS | 2012年 / 95卷 / 04期

基金：

美国国家科学基金会; 俄罗斯基础研究基金会;

关键词：

SPALLATION; ABLATION; METALS;

D O I：

10.1134/S0021364012040042

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

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.

引用

页码：176 / 181

页数：6

共 11 条

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