Clearly structured fragment kinetic energy spectra discovered in the Coulomb explosion of H2+ and D2+
Max Planck Institut für Quantenoptik,
Hans-Kopfermannstrasse 1, 85748 Garching, Germany
Corresponding author: a Hartmut.Figger@mpq.mpg.de
Published online: 8 July 2003
In an ion beam experiment the Coulomb explosion of H2+ and D2+ in intense laser fields was investigated. The kinetic energy spectra of the fragments H+ and D+ show strong structure at laser intensities close to the threshold. They can be interpreted by net two-photon dissociation followed by Coulomb explosion at a sharp critical internuclear distance.
PACS: 33.80.Gj – Diffuse spectra; predissociation, photodissociation / 33.80.Rv – Multiphoton ionization and excitation to highly excited states (e.g., Rydberg states) / 42.50.Hz – Strong-field excitation of optical transitions in quantum systems; multiphoton processes; dynamic Stark shift
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2003