Optical diagnostics of femtosecond laser plasmas
  • 万方数据
    中国科学A辑(英文版) 중국과학A집(영문판)
    SCIENCE IN CHINA
    2001年 1期 98-102 ,共5页

    李玉同%张杰%陈黎明%夏江帆%腾浩%赵理曾%林景全%李英骏%魏志义%王龙%江文勉

    리옥동%장걸%진려명%하강범%등호%조리증%림경전%리영준%위지의%왕룡%강문면





    Optical diagnostics of evolution of plasmas produced by ultrashort laser pulses is carried out using a femtosecond probing beam. The time sequence of plasma shadowgrams and interferograms are obtained. The filamentation instability in high_density region induces the local density modification. Large_scale toroidal magnetic fields confine plasma expansion in the transverse direction, resulting in the formation of a plasma jet. The plasma expansion along the target normal direction is found to scale as 1 2.
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