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. 2017 Dec 27;4(6):061508. doi: 10.1063/1.4996505

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© 2017 Author(s).

2329-7778/2017/4(6)/061508/38

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FIG. 8. — (a) Full spectrum of harmonics used as a pump in the experiment. (b) Comparison between the photon energies and the vertical excitation to the main cationic states. (c) Population of the cationic states after excitation by the spectra shown in (b), calculated with the tabulated values for monochromatic excitation.¹⁵⁷ As it is possible to observe, both the full spectrum (blue) and a filtered spectrum composed of only two harmonics (orange) can efficiently populate only the first four states of the molecular cation.