The HeI2(ion-pair states) van der Waals complexes
| Autor: | S.S. Lukashov, Anatoly Pravilov, S.A. Poretsky, I. N. Cherepanov, V.V. Baturo |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
010304 chemical physics
Chemistry Excitation spectra General Physics and Astronomy Luminescence spectra Ion pairs 010402 general chemistry Branching (polymer chemistry) 01 natural sciences Dissociation (chemistry) 0104 chemical sciences symbols.namesake 0103 physical sciences symbols Physical chemistry Physical and Theoretical Chemistry Atomic physics van der Waals force Luminescence Excitation |
| Zdroj: | Chemical Physics Letters. 662:250-256 |
| ISSN: | 0009-2614 |
| DOI: | 10.1016/j.cplett.2016.09.021 |
| Popis: | The T -shaped HeI 2 ( E 0 g + ) van der Waals complexes populated in the HeI 2 ( E , v E = 0–2, n E = 0 ← B ,19, n B = 0 ← X ,0, n X ) excitation pathway have been studied. Analysis of the luminescence excitation spectra as well as the I 2 ( E 0 g + → B 0 u + , D 0 u + → X 0 g + , and D ′2 g → A ′2 u ) luminescence spectra themselves has been carried out. It has been shown that the I 2 ( D → X , and D ′ → A ′) luminescence is due to HeI 2 ( E ← B ) transitions with subsequent electronic predissociation. We have determined dissociation energies of the HeI 2 ( E , v E = 0–2) complexes, vibrational populations of the E , D states and branching ratios of vibrational and electronic predissociations. One can suppose that luminescence of the HeI 2 ( E , v E = 0, n E = 0) complexes occurs. |
| Databáze: | OpenAIRE |
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