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

Table 2

Spectroscopic constants of the Fe II lines (Figure 3) used in Boltzmann plot temperature determination.

Line number	Transition	Wavelength (nm)		Ek (eV)	Acc
1	3d^6(^5D)4s - 3d^6(^5D)4p	256.253		5.8232247	C+
2		256.347		5.8755874	B+
4		258.258		5.8755874	B+
5		258.587		4.79323573	B+
7		259.154		5.8232247	C+
9		261.382		4.84893717	B+
10		261.762		4.81789816	B
11		262.829		4.83702227	B
3	3d^6(^3P2)4s - 3d^6(^3P2)4p	257.436		7.3973237	C+
6	3d^6(^1G2)4s - 3d^6(^1G2)4p	258.795		8.9430267	B+
8	3d^6(^1I)4s - 3d^6(^1I)4p	259.278		8.8565247	B+