Figure 2.

(a) Raman spectra from an in-situ experiment at increasing temperatures. The experiment begins with solid α-S₈, with an observable transition to β-S₈, and then a transition to liquid S₈. Spectra are normalized to the 150 cm⁻¹ peak; (b) A plot of the 20 °C α-S₈ spectrum and (c) the 160 °C liquid sulfur spectrum normalized to the characteristic 473 cm⁻¹ S₈ feature, showing Lorentzian functions (orange and blue respectively) and the cumulative fit in yellow. Plot (c) shows the presence of a shoulder feature (461 cm⁻¹), which denotes the accretion of disordered polymeric sulfur chains (S_μ) in the high temperature liquid sulfur.