Volume 83, Number 5, September 2008
Article Number 53001
Number of page(s) 4
Section Atomic, Molecular and Optical Physics
Published online 29 August 2008
EPL, 83 (2008) 53001
DOI: 10.1209/0295-5075/83/53001

A method to characterize electronic states of 4s ionized Rb by combined laser and synchrotron spectroscopy

J. Schulz1, 2, E. Loos2, M. Huttula2, S. Heinäsmäki2, S. Svensson3, S. Aksela2 and H. Aksela2

1   Center for Free-Electron Laser Science (CFEL) at DESY - D-22603 Hamburg, Germany, EU
2   Department of Physical Sciences - P.O. Box 3000, FIN-90014 University of Oulu, Finland, EU
3   Department of Physics, Uppsala University - Box 530, SE-75121 Uppsala, Sweden, EU

received 22 May 2008; accepted in final form 27 June 2008; published September 2008
published online 29 August 2008

Photoelectron studies of laser-excited atomic states can reveal more information about the final ionic states than ground-state photoemission. The possibility to tune the laser to distinct fine-structure sub-states of the excited states allows to select specific angular-momentum couplings of the valence electron that are conserved during photoemission. In the 4s photoemission of laser-excited rubidium we use this method to determine the final-state energies and widths of doubly excited ionic states and characterize the angular-momentum couplings.

32.80.Fb - Photoionization of atoms and ions.
42.62.Fi - Laser spectroscopy.

© EPLA 2008