Fig. 3: Comparison of spectra at high temperatures.
From: High-resolution spectroscopy of buffer-gas-cooled phthalocyanine
The red line is the spectrum of FBPc cooled with helium buffer gas at 5 K, similar to that in Fig. 1. The green line is the spectrum of FBPc cooled with neon buffer gas at 15 K. The black line shows simulation results at 20 K. Absorption intensities are normalized for clarity. Measurements at higher temperature gave broader spectra with wider rotational distribution.
