Characterization of a controlled plasma expansion in vacuum for laser driven ion acceleration

被引：15

作者：

Flacco, A. ^{[1
,3
]}

Guemnie-Tafo, A. ^{[1
]}

Nuter, R. ^{[4
]}

Veltcheva, M. ^{[2
]}

Batani, D. ^{[2
]}

Lefebvre, E. ^{[4
]}

Malka, V. ^{[1
]}

机构：

[1] ENSTA Ecole Polytech, CNRS, UMR 7639, Lab Opt Appl, F-91761 Palaiseau, France

[2] Univ Milano Bicocca, Dipartimento Fis G Occhialini, I-20126 Milan, Italy

[3] Univ Milan, Dipartimento Fis, I-20133 Milan, Italy

[4] CEA DIF, Dept Phys Theor & Appl, F-91297 Arpajon, France

来源：

JOURNAL OF APPLIED PHYSICS | 2008年 / 104卷 / 10期

关键词：

interferometers; interferometry; plasma density; plasma diagnostics; plasma heating by laser; plasma production by laser; plasma shock waves; plasma simulation;

D O I：

10.1063/1.3021316

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We present experimental and numerical results on the formation of a controlled plasma density gradient in front of a solid target irradiated with a subpicosecond, moderate intensity laser pulse. Interferometry with femtosecond probe is used to map the temporal evolution of the spatial density distribution of the generated plasma. Experimental results are found to be in good agreement with 1D1/2 hydrodynamic simulations. Moreover, these numerical simulations enable us to determine the impact of such a heating beam on the target rear surface and to correlate the plasma gradient that can be produced on the illuminated surface with the position of the shock wave in the bulk.

引用

页数：5

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