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We investigated the role of helium ambient gas on the dynamics of C2 species formation in laser-produced carbon plasma. The plasma was produced by focusing 1064 nm pulses from an Nd:YAG laser onto a carbon target. The emission from the C2 species was studied using optical emission spectroscopy, and spectrally resolved and integrated fast imaging. Our results indicate that the formation of C2 in...

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The plume generated by ablation of hydroxyapatite targets under ArF excimer laser irradiation has been investigated by means of fast intensified charge coupled device (CCD) imaging and optical emission spectroscopy. Results have shown that the plume splits into two plasma clouds as it expands. Time and spatial resolved spectra have revealed that under the experiment conditions emission is mostl...

A procedure for the reconstruction of electron energy distribution functions (EEDF) of low-temperature neon plasmas from optical emission spectroscopy data is presented. A data descriptive model, including the physics of the plasma discharge and the spectroscopic measurement is developed. Particular refinements of the model regarding the apparatus function of the spectrometer and the optical de...

Experiments have been carried out to characterize furlher the properties of a new laser-ablation-assisted-plasma-discharge source of metallic aluminium ions. Laser ablation is accomplished by focusing a KrF excimer laser (e 1.2 J, 40 ns, 248 nm) onto a solid aluminium target with a fluence of approximately 10 J m i 2 . Through gated optical emission spectroscopy, the laser ablation plume optica...

A time revolved spectroscopic study of the emission phases occurring throughout a nanosecond pulsed discharge in water is presented. Discharged are ignited in deionized water via a submerged pin-t-plane electrode configuration by application of 24kV pulses with a rise time of 4ns and a duration of 10ns. Optical emission spectroscopy of the plasma radiation is performed, revealing a very complex...

We experimentally study the dynamics of the plasma induced by the double-laser-pulse irradiation of solid target in water, and find that an appropriate choice of the pulse energies and pulse interval results in the production of an unprecedentedly mild (low-density) plasma, the emission spectra of which are very narrow even without the time-gated detection. The optimum pulse interval and pulse ...