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. 2009 Jul 6;106(28):11454–11459. doi: 10.1073/pnas.0901836106

Fig. 2.

Fig. 2.

Raman spectra of the N2/H2O mixture at 0.1 GPa. (Line a) Spectrum measured before irradiation in the nitrogen-rich region (see Fig. 1(2). (Line b) Spectrum measured in the water-rich region after 3 h of irradiation with 500 mW of the 350-nm line focused to irradiate all of the sample (150 μm in diameter), the 2 strong bands just >1,000 cm−1 are the R2 and R1 ruby fluorescence lines. (Line c) Spectrum measured in the nitrogen-rich region (same conditions as line b). (Line d) Spectrum measured in the nitrogen-rich region after 5 additional hours of irradiation with 200 mW of the 350-nm line focused to 40 μm to increase the power density by a factor 6. (Line e) Reference spectrum of a H2/Ar mixture (5% H2 molar fraction) at 1.4 GPa.