https://doi.org/10.1007/PL00021554
Photoionization of NaI: inward-outward asymmetry in the wave packet detection
1
DRECAM/SPAM, CEA Saclay, 91911 Gif-sur-Yvette, France
2
Laboratoire de Photophysique Moléculaire du CNRS, Bâtiment 213, Université de Paris Sud
91405 Orsay cedex, France
Received:
3
October
1997
Revised:
8
December
1997
Accepted:
10
December
1997
Published online: 13 August 2013
The nuclear wave packet in the A state of NaI has been monitored in a pump-probe
femtosecond experiment using a resonant two-photon ionization detection scheme. A strong
asymmetry depending on the direction of propagation
of the wave packet is observed in the
ion signal. This phenomenon, well reproduced by a full quantum wave packet
calculation, has been assigned to the combination of two effects:
i) the motion of the wave packet in the intermediate state of the two-photon probe
process,
ii) the R-dependence of the photoionization efficiency of this intermediate state.
PACS: 33.80.-b – Photon interactions with molecules / 33.80.Rv – Multiphoton ionization and excitation to highly excited states (e.g., Rydberg states)
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 1998
