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Author Arissian, L. ♦ Smeenk, C. ♦ Trallero, C. ♦ Villeneuve, D. M. ♦ Staudte, A. ♦ Corkum, P. B. ♦ Turner, F. ♦ Sokolov, A. V.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword ATOMIC AND MOLECULAR PHYSICS ♦ APPROXIMATIONS ♦ ATOMS ♦ ELECTRIC FIELDS ♦ ELECTRONS ♦ FORECASTING ♦ INFRARED RADIATION ♦ PHOTOIONIZATION ♦ PHOTON-ATOM COLLISIONS ♦ RARE GASES ♦ TUNNEL EFFECT ♦ VISIBLE RADIATION ♦ ATOM COLLISIONS ♦ CALCULATION METHODS ♦ COLLISIONS ♦ ELECTROMAGNETIC RADIATION ♦ ELEMENTARY PARTICLES ♦ ELEMENTS ♦ FERMIONS ♦ FLUIDS ♦ GASES ♦ IONIZATION ♦ LEPTONS ♦ NONMETALS ♦ PHOTON COLLISIONS ♦ RADIATIONS
Abstract Tunneling is often used to describe multiphoton ionization of rare gas atoms in infrared fields. We test the tunneling approximation and its nonadiabatic extension by measuring the unperturbed momentum distribution along the k direction of a circularly polarized light pulse. We find substantial, but not total, agreement between our results and the predictions of the model. As predicted, the k direction momentum distribution is Gaussian and its width increases with the square root of electric field strength. However, the width is 15% too large and we find no evidence of nonadiabatic effects as we approach the expected limits of the approximation.
ISSN 00319007
Educational Use Research
Learning Resource Type Article
Publisher Date 2010-09-24
Publisher Place United States
Journal Physical Review Letters
Volume Number 105
Issue Number 13


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