6533b85efe1ef96bd12c043a
RESEARCH PRODUCT
Wavelength dependence of multiphoton ionization of xenon
Patrick Kaminski Rolf Wiehle Vincent Renard Anne Kazmierczak Bruno Lavorel Olivier Faucher Bernd Witzelsubject
[PHYS.PHYS.PHYS-OPTICS] Physics [physics]/Physics [physics]/Optics [physics.optics][PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics][ PHYS.PHYS.PHYS-OPTICS ] Physics [physics]/Physics [physics]/Optics [physics.optics]Physics::Atomic and Molecular ClustersPhysics::OpticsPhysics::Atomic Physicsdescription
International audience; We have studied the multiphoton ionization of xenon atoms by 160 fs pulses at intensities of 531012 and 1.331013 W/cm2 and present photoelectron kinetic energy and angular distribution spectra measured with a photoelectron imaging spectrometer. A noncollinear optical parametric amplifier allows us to tune the wavelength of the laser pulse over a range between 500 and 700 nm. Resonant and nonresonant processes as well as channel switching effects have been observed in this intensity and wavelength regime. Mainly resonant s5+1d-photon ionization via ns, nd, and nd8 Rydberg states was studied in the region of 505–602 nm. Resonance structures were found related to the two fine structure ionization channels Xe+ 2P3/2 and Xe+ 2P1/2. In addition the s6+1d-photon resonant ionization and nonresonant 5- and 6-photon processes could be studied.
year | journal | country | edition | language |
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2004-01-01 |