Observing time-dependent vibrational quantum dynamics in deuterium hydride molecular ions
2007; Taylor & Francis; Volume: 54; Issue: 7 Linguagem: Inglês
10.1080/09500340601005065
ISSN1362-3044
AutoresJ. A. McKenna, W. A. Bryan, C R Calvert, Elizabeth English, Jamin C. Wood, D S Murphy, I. C. E. Turcu, J. M. Smith, Klaus Ertel, O. Chekhlov, E. J. Divall, J F McCann, W R Newell, I. D. Williams,
Tópico(s)Spectroscopy and Quantum Chemical Studies
ResumoFew-cycle laser pulses are used to “pump and probe” image the vibrational wavepacket dynamics of a HD+ molecular ion. The quantum dephasing and revival structure of the wavepacket are mapped experimentally with time-resolved photodissociation imaging. The motion of the molecule is simulated using a quantum-mechanical model predicting the observed structure. The coherence of the wavepacket is controlled by varying the duration of the intense laser pulses. By means of a Fourier transform analysis both the periodicity and relative population of the vibrational states of the excited molecular ion have been characterized.
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