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Wavepacket dynamics and predissociation of the D-1 Pi(u) state of Rb-2
KTH, Superseded Departments, Physics.
2000 (English)In: Chemical Physics Letters, ISSN 0009-2614, E-ISSN 1873-4448, Vol. 325, no 06-maj, 577-583 p.Article in journal (Refereed) Published
Abstract [en]

We present the first experimental investigation of the real-time dynamics of predissociation in a diatomic molecule involving more than two electronic states - the predissociation of the D(1)Pi(u) state of Rb-2. Our results show that the state is strongly predissociated, tau approximate to 5 ps, above a sharp energy threshold. We propose that mainly the (1)(3)Delta(u) state causes the fast predissociation and that the fine-structure components of the products are mixed by coupling among molecular states at large internuclear distances. Furthermore, an outward-inward asymmetry of the wavepacket signal is attributed to autoionisation of the wavepacket evolving in the probe (Rydberg) state.

Place, publisher, year, edition, pages
2000. Vol. 325, no 06-maj, 577-583 p.
Keyword [en]
wave-packet dynamics, laser-induced fluorescence, pump-probe spectroscopy, femtosecond, ionization, nai, photoionization, motion, rb2, ibr
Identifiers
URN: urn:nbn:se:kth:diva-19949ISI: 000088612600015OAI: oai:DiVA.org:kth-19949DiVA: diva2:338641
Note
QC 20100525Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2017-12-12Bibliographically approved

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