2011, Vol.14, No.3, pp.217-221
A two-wavelength high-speed holographic cinematography, integral
and time-resolved spectroscopy and splite unfolding methods were
used in an investigation of a laser plasma initiated at the
surfaces of metal samples by laser pulses in the external electric
field. The temporal evolution of the electron densities and heavy
particle concentrations was determined and a study was made of the
nature of motion of shock wave and plasma fronts. A weak
dependence of the evolution of the shock wave velocity on the
target materials (aluminum, copper, zinc, led, indium) was
observed in the average power density range (106-107 W/cm2). A faster increase in the dimensions of a
refracting plasma region, compared to a luminous region, and
strong expulsion of cold air by an erosion plasma were recorded.
Key words:
laser plasma, temporal evolution, holographic filming, electric field
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