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Fig. 3

image

Potential energy curves for the ground and excited state of O2 (red curves) (Guberman 1977; Lewis et al. 1998, 2001), and the O2 photoabsorption section from Sect. 4.3.35 (blue curve). Shown on equivalent energy and wavelength scales. The energy scale is relative to the minimum of the ground-state electronic potential curve, shown here shifted upwards by 4 eV. The shaded area shows the vertical excitation region.

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