Two-photon double ionization of rare gases by a superposition of harmonics

Journal Article · Wed Nov 15 04:00:00 EST 2006 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.74.051402· OSTI ID:20974673

Benis, E P; Tzallas, P ^[1]; Charalambidis, D ^[1]; Kitsopoulos, T N ^[1]; Tsakiris, G D ^[2]

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1. Foundation for Research and Technology-Hellas, Institute of Electronic Structure and Laser, P.O. Box 1527, GR-71110 Heraklion (Crete) (Greece)
2. Max-Planck-Institut fuer Quantenoptik, D-85748 Garching (Germany)

Two XUV-photon double ionization of Kr and Ar by an intense superposition of higher-order harmonics of a Ti:sapphire laser is demonstrated. The logarithm of the Kr{sup 2+} and Ar{sup 2+} signals measured as a function of the logarithm of the XUV intensity depicts a linear dependence with a slope of 1.8{+-}0.2. Under the XUV intensities and photon energies employed, this slope value provides evidence that to the observed double ionization the direct process has a significant contribution. Applications of the above process to attosecond pulse metrology are also discussed.

• OSTI ID: 20974673
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 5 Vol. 74; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ARGON
EXTREME ULTRAVIOLET RADIATION
HARMONICS
KRYPTON
KRYPTON IONS
MULTI-PHOTON PROCESSES
PHOTOIONIZATION
PHOTON-ATOM COLLISIONS
PHOTONS
RARE GASES