Density depression in laser-created plasma unveiled with table-top soft x-ray laser interferometry

被引：0

作者：

Filevich, J ^{[1
]}

Rocca, JJ ^{[1
]}

Jankowska, E ^{[1
]}

Hammarsten, EC ^{[1
]}

Marconi, MC ^{[1
]}

Moon, SJ ^{[1
]}

Shlyaptsev, VN ^{[1
]}

机构：

[1] Colorado State Univ, Dept Elect & Comp Engn, Ft Collins, CO 80523 USA

来源：

X-RAY LASERS 2002 | 2002年 / 641卷

关键词：

D O I：

暂无

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Soft x-ray laser interferogramis of laser-created plasmas generated at moderate irradiation intensities (1 x 10(11) - 7 x 10(12) W cm(-2)) with lambda = 1.06 mum light pulses of similar to13 ns FWHM duration and narrow. focus (similar to30 mum) reveal the unexpected formation of an inverted density profile with a density minimum on axis and distinct plasma sidelobes. Model simulations show that this strong 2-dimensional hydrodynamic behavior is essentially a universal phenomenon that is the result of plasma radiation induced mass ablation and cooling in the areas surrounding the focal spot. These measurements, which mapped plasma densities up to 0.9 x 10(21) cm(-3), demonstrate the use of a portable soft x-ray laser interferometer as a high resolution tool for the study of high density plasma phenomena and the validation of hydrodynamic codes.

引用

页码：489 / 494

页数：6

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