Effect of a triplet to singlet state interaction on photofragmentation dynamics: highly excited states of HBr probed by VMI and REMPI as a case study
| Autor: | Peter C. Samartzis, Ágúst Kvaran, Arnar Hafliðason, Dimitris Zaouris, Pavle Glodic |
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| Rok vydání: | 2016 |
| Předmět: |
Resonance-enhanced multiphoton ionization
010304 chemical physics Chemistry General Physics and Astronomy Photoionization 010402 general chemistry 01 natural sciences Spectral line 0104 chemical sciences Photoexcitation symbols.namesake Fragmentation (mass spectrometry) Excited state 0103 physical sciences Rydberg formula symbols Singlet state Physical and Theoretical Chemistry Atomic physics |
| Zdroj: | Physical Chemistry Chemical Physics. 18:26291-26299 |
| ISSN: | 1463-9084 1463-9076 |
| Popis: | Analysis of mass resolved spectra as well as velocity map images derived from resonance enhanced multiphoton ionization (REMPI) of HBr via resonance excitations to mixed Rydberg (6pπ 3Σ−(v′ = 0)) and valence (ion-pair) (V 1Σ+(v′ = m + 17)) states allows characterization of the effect of a triplet-to-singlet state interaction on further photoexcitation and photoionization processes. The analysis makes use of rotational spectra line shifts, line intensity alterations, kinetic energy release spectra as well as angular distributions. Energy-level-dependent state mixing of the resonance excited states is quantified and photoexcitation processes, leading to H+ formation, are characterized in terms of the states and fragmentation processes involved, depending on the state mixing. |
| Databáze: | OpenAIRE |
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