Fig. 6: Absorption spectra in the THz regime. | Nature Communications

Fig. 6: Absorption spectra in the THz regime.

From: Spectral signatures of excess-proton waiting and transfer-path dynamics in aqueous hydrochloric acid solutions

Fig. 6

a Experimental THz/Fourier-transform infrared (THz/FTIR) difference spectra of 6 M HCl solution (red broken line) compared to the difference spectrum from ab initio molecular dynamics (MD) simulations (red dotted line). b The simulated 6 M HCl spectrum (red solid line) is decomposed into a chloride-ion contribution (green solid line, including cross correlations) and the remainder (gray solid line). For comparison the simulated pure-water spectrum (blue solid line) is also shown.

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