Controlling ionization products through laser-induced continuum structure

Year: 1998

Authors: Cavalieri S., Eramo R., Fini L., Materazzi M., Faucher O., Charalambidis D.

Autors Affiliation: Dipartimento di Fisica, Instituto Nazionale di Fisica della Materia, Italy; European Laboratory for Non-Linear Spectroscopy (LENS), Universitá di Firenze, Largo Enrico Fermi 2, Firenze, I-50125, Italy; Laboratoire de Physique, Unité Propre de L’enseignement Superieur Associe au CNRS 5027, Faculté des Sciences Mirande, Université de Bourgogne, Boîte Postale 400, Dijon Cedex, 21011, France; Foundation for Research and Technology–Hellas, Institute of Electronic Structure and Laser, P.O. Box 1527, Heraklion, Crete, 711 10, Greece; Department of Physics, University of Crete, P.O. Box 2208, Heraklion, Crete, 710 03, Greece

Abstract: We report on the observation of the modification of the two spin-orbit ionization continua of Xe through laser-induced continuum structure (LICS). The radiative decay of the Xe ground state into the two electronic continua that correspond to the two fine-structure levels of the ground state of the Xe+ ion can be varied by electromagnetically embedding a bound state of the atom into the two continua. The dressed P-2(1/2) continuum, probed from the atomic ground state through three-photon absorption, exhibits a clear induced structure, while the (2)p(3/2) continuum possesses no observable structure under the present experimental conditions, as manifested through high-resolution photoelectron spectra. The modified ionization ratio is controlled by the wavelength of the dressing field.


Volume: 57 (4)      Pages from: 2915  to: 2919

KeyWords: Atoms; Electromagnetic field effects; Electron energy levels; Ions; Laser beams; Light absorption; Photoelectron spectroscopy; Photoionization; Xenon, High resolution photoelectron spectroscopy; Laser induced continuum structure; Photon absorption; Spin orbit ionization, Atomic physic
DOI: 10.1103/PhysRevA.57.2915

Citations: 30
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