LIBS Analysis of Geomaterials: Comparative Study of Basalt Plasma Induced by TEA CO₂ and Nd:YAG Laser in Air at Atmospheric Pressure

Figure 4

Boltzmann’s plot for laser-induced plasma of basalt at atmospheric pressure utilizing Fe II transition lines listed in Table 1. . The error bars account for combined uncertainties of line intensity measurements and of transition probability accuracy (Table 2).