The role of mass removal mechanisms in the onset of ns-laser induced plasma formation

被引：57

作者：

Autrique, D. ^{[1
,2
,3
]}

Clair, G. ^{[4
]}

L'Hermite, D. ^{[5
]}

Alexiades, V. ^{[6
]}

Bogaerts, A. ^{[3
]}

Rethfeld, B. ^{[1
,2
]}

机构：

[1] TU Kaiserslautern, Dept Phys, D-67653 Kaiserslautern, Germany

[2] TU Kaiserslautern, Optimas Res Ctr, D-67653 Kaiserslautern, Germany

[3] Univ Antwerp, Dept Chem, B-2610 Antwerp, Belgium

[4] CEA, DAM, DIF, F-91297 Arpajon, France

[5] CEA, DEN, SEARS, LANIE, F-91191 Gif Sur Yvette, France

[6] Univ Tennessee, Dept Math, Knoxville, TN 37996 USA

来源：

JOURNAL OF APPLIED PHYSICS | 2013年 / 114卷 / 02期

关键词：

BOUNDARY-CONDITIONS; EXPANSION DYNAMICS; GAS-DYNAMICS; ABLATION; EVAPORATION; VAPORIZATION; CONDENSATION; TRANSITION; SIMULATION; ALUMINUM;

D O I：

10.1063/1.4812577

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The present study focuses on the role of mass removal mechanisms in ns-laser ablation. A copper sample is placed in argon, initially set at standard pressure and temperature. Calculations are performed for a 6 ns laser pulse with a wavelength of 532 nm and laser fluences up to 10 J/cm(2). The transient behavior in and above the copper target is described by a hydrodynamic model. Transmission profiles and ablation depths are compared with experimental results and similar trends are found. Our calculations reveal an interesting self-inhibiting mechanism: volumetric mass removal in the supercritical region triggers plasma shielding and therefore stops proceeding. This self-limiting process indicates that volumetric mass removal does not necessarily result in large ablation depths. (C) 2013 AIP Publishing LLC.

引用

页数：10

共 63 条

[1] LASER-INDUCED PLASMA FORMATION DURING PULSED-LASER DEPOSITION [J].