Abstract
We present the application of ultrafast time- and mass-resolved ion yield laser spectroscopy in conjunction with ab initio electronic structure calculations to track molecular excited-state dynamics. We discuss how molecular fragment ions can be associated with conformations the molecule assumes during its relaxation, and how various features of the pump-probe signal for those fragments can be used to infer details of the excited-state dynamics. We present results for radiationless relaxation in DNA and RNA bases adenine, cytosine, and uracil in the gas phase, pumped near a one-photon resonance transition to an excited state, and probed via strong-field near-IR dissociative ionization.
| Original language | English |
|---|---|
| Article number | 6145139 |
| Pages (from-to) | 187-194 |
| Number of pages | 8 |
| Journal | IEEE Journal of Selected Topics in Quantum Electronics |
| Volume | 18 |
| Issue number | 1 |
| DOIs | |
| State | Published - 2012 |
Keywords
- Mass spectroscopy
- optical pulses
- photochemistry
- ultrafast optics
- ultraviolet sources
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