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Updated: Jun 12, 2026

Emission Spectroscopic Boundary Layer Investigation during Ablative Material Testing in Plasmatron
Published on: June 9, 2016
Spectroscopic study of ablation in guided surface discharge plasmas
Abstract:
A spectroscopic study of gliding ablative discharges has been carried out on N(2), CO(2), and lasing mixtures of TEA CO(2) lasers. By spectroscopic plasma diagnosis techniques (local thermodynamic equilibrium assumed) we observed an inhomogeneous transversal distribution of the ablated elements. Electronic temperature and density transversal distributions are, however, fairly homogeneous. We also found a different ablation threshold for two ablated substrate elements. The ablation threshold seems to be related to the plasma current density. The results are of practical interest in the UV preionization of TEA CO(2) lasers.
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