Development of double-pulse lasers ablation system for generating gold ion source under applying an electric field

Khalil, A. H.

doi:10.1016/j.optlastec.2015.06.015

Cited by 16 publications

(1 citation statement)

References 55 publications

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“…This trend can be explained by the fact that the probability of multiphoton ionization increases proportionally to the photon energy coming from the DP lasers. [29][30][31][32] The intensity distribution within each laser beam is in Gaussian profile. The beam quality factor for each laser beam has a Gaussian fit correlation ∼0.90 with an M 2 ∼1.5, pulse-to-pulse stability ∼7%, and an Airy disk spot diameter of the first zero rings obtained by…”

Section: Experimental Details 21 Splas and Dplas Principlementioning

confidence: 99%

Tungsten ion source under double-pulse laser ablation system

et al. 2017

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New tungsten ion source is produced by using single and double-pulse laser ablation system. Combined collinear Nd:YAG laser beams (266+1064 nm) are optimized to focus on the sample in air. Optimization of the experimental parameters is achieved to enhance the signal-to-noise ratio of the emission spectra. The velocity distribution of the emitted plasma cloud is carefully measured. The influences of the potential difference between the bias electrodes, laser wavelength and intensity on the current signal are also studied. The results show that the increase in the tungsten ion velocity under the double-pulse lasers causes the output current signal to increase by about three folds. The electron density and temperature are calculated by using the Stark-broadened line profile of tungsten line and Boltzmann plot method of the upper energy levels, respectively. The signal intensity dependence of the tungsten ion angular distribution is also analyzed. The results indicate that the double-pulse laser ablation configuration is more potent technique for producing more metal ion source deposition, thin film formation, and activated plasma-facing component material.

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Section: Experimental Details 21 Splas and Dplas Principlementioning

confidence: 99%