Journal
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
Volume 43, Issue 9, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0953-4075/43/9/095601
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Funding
- Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO)
- National Science Foundation [PHY-0701372]
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We present angle-and energy-resolved measurements of photoelectrons produced in strong-field ionization of Xe using a tunable femtosecond laser. An occurrence of highly oscillatory patterns in the angular distribution at low photoelectron kinetic energy is observed that correlates with channel closing/opening over a wide range of laser parameters. The correlation is investigated both experimentally and by means of systematic analysis of numerical solutions of the time-dependent Schrodinger equation. Our experimental and numerical results are in quantitative agreement with the semi-classical model introduced by Arbo et al (2008 Phys. Rev. A 78 013406), which relates the oscillatory patterns to interference between photoelectrons produced during different cycles of the laser pulse in the course of non-resonant ionization of the atom. We observe that an increase of the laser intensity eventually leads to qualitative invariance of the pattern, defining a limit on the applicability of the semi-classical model.
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