*2.5. Spectroscopic Physical Parameters*

2.5.1. Oscillator Strength (*f*) Transition Dipole Moment (−μe)

Oscillator strength and transition dipole moment were measured using Equations (2) and (3), respectively.

$$f = 4.32 \times 10^{-9} \left[ \varepsilon\_{\text{max}} \,\Delta v\_{\frac{1}{2}} \right] \tag{2}$$

$$
\mu = 0.0958 \left[ \frac{\varepsilon\_{\text{max}\Delta v}}{\overline{v}\_{\text{max}}} \right]^{1/2} \tag{3}
$$
