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. 2020 Jan 21;11:421. doi: 10.1038/s41467-019-14248-1

Fig. 7. Raman scattering cross-sections of carbonate and bicarbonate ions.

Fig. 7

We present results for the δ-Na2CO3 (black line) and NaHCO3 (red line) crystals as a function of pressure. The cross section ratios between these two ions, i.e., the γ ratio (γcarbγbicarb), are shown as blue triangles.