| Autor: |
Krechkivska, O., Bacskay, G. B., Welsh, B. A., Nauta, K., Kable, S. H., Stanton, J. F., Schmidt, T. W. |
| Předmět: |
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| Zdroj: |
Journal of Chemical Physics; 2016, Vol. 144 Issue 14, p1-6, 6p, 3 Charts, 3 Graphs |
| Abstrakt: |
Resonant two-photon threshold ionization spectroscopy is employed to determine the ionizationenergy of C2 to 5 meV precision, about two orders of magnitude more precise than the previously accepted value. Through exploration of the ionization threshold after pumping the 0-3 band of the newly discovered 4³Πg←a³Πu band system of C2, the ionizationenergy of the lowest rovibronic level of the a³Πu state was determined to be 11.791(5) eV. Accounting for spin-orbit and rotational effects, we calculate that the ionizationenergy of the forbidden origin of the a³Πu state is 11.790(5) eV, in excellent agreement with quantum thermochemical calculations which give 11.788(10) eV. The experimentally derived ionizationenergy of X¹Σg+X¹Σg+ state C2 is 11.866(5) eV. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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