engleski

Laser-produced copper plasmas

The Cu plasmas were produced by a ruby laser (~ 5 J, 694.3 nm, ~ 18 ns, ~140 GW/ cm2). Time-resolved spectra of the plasmas were observed in the region of 8-24 nm. The electron temperature was estimated to be about 40 eV. A small depth of the crater (~ 3000 nm) and the surrounding ripples were observed at the Cu target surface. The trace of deposited plasma was explained as the Rayleigh-Taylor instability. Plasma was transparent to the laser beam.

Time resolved spectrometry; Cu target; Pulsed ruby laser; Traces of deposited plasma; Rayleigh-Taylor instability.

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