Two-dimensional effects in laser-created plasmas measured with soft-x-ray laser interferometry

被引：39
|
作者：
Filevich, J [1 ]
Rocca, JJ
Jankowska, E
Hammarsten, EC
Kanizay, K
Marconi, MC
Moon, SJ
Shlyaptsev, VN
机构：
[1] Colorado State Univ, Dept Elect & Comp Engn, Ft Collins, CO 80523 USA
[2] Lawrence Livermore Natl Lab, Dept Appl Sci, Livermore, CA 94551 USA
[3] Wroclaw Univ Technol, Dept Phys, PL-50138 Wroclaw, Poland
[4] Univ Buenos Aires, Dept Phys, RA-1053 Buenos Aires, DF, Argentina
来源：
PHYSICAL REVIEW E | 2003年 / 67卷 / 05期
关键词：
D O I：
10.1103/PhysRevE.67.056409
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
Soft-x-ray laser interferograms of laser-created plasmas generated at moderate irradiation intensities (1x10(11)-7x10(12) W cm(-2)) with lambda=1.06 mum light pulses of similar to13-ns-FWHM (full width at half maximum) 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 two-dimensional hydrodynamic behavior is essentially a universal phenomena that is the result of plasma radiation induced mass ablation and cooling in the areas surrounding the focal spot.
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页数：6
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