Wavelength dependence of multiphoton ionization of xenon

Wavelength dependence of multiphoton ionization of xenon

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 t...

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Bibliographic Details
Published in:Physical review. A, Atomic, molecular, and optical physics Vol. 70; no. 5
Main Authors: Kaminski, Patrick, Wiehle, Rolf, Renard, Vincent, Kazmierczak, Anne, Lavorel, Bruno, Faucher, Olivier, Witzel, Bernd
Format: Journal Article
Language:English
Published: United States American Physical Society 01-11-2004
Subjects:
ANGULAR DISTRIBUTION
ATOMIC AND MOLECULAR PHYSICS
ATOMS
ELECTRON SPECTRA
ELECTRON SPECTROMETERS
FINE STRUCTURE
FREQUENCY DEPENDENCE
KINETIC ENERGY
LASER RADIATION
MULTI-PHOTON PROCESSES
Optics
PARAMETRIC AMPLIFIERS
PHOTOELECTRON SPECTROSCOPY
PHOTOIONIZATION
PHOTON-ATOM COLLISIONS
PHOTONS
Physics
PULSES
RESONANCE
RYDBERG STATES
WAVELENGTHS
XENON
XENON IONS
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Summary: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.
ISSN:1050-2947
1094-1622
DOI:10.1103/PhysRevA.70.053413