Low-Energy Structures in Strong Field Ionization Revealed by Quantum Orbits

Journal Article · Fri Dec 17 04:00:00 EST 2010 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.105.253002· OSTI ID:21554486

Yan, Tian-Min ^[1]; Popruzhenko, S V ^[2]; Vrakking, M J. J. ^[3]; Bauer, D ^[1]

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1. Institut fuer Physik, Universitaet Rostock, 18051 Rostock (Germany)
2. National Research Nuclear University 'Moscow Engineering Physics Institute', Kashirskoe Shosse 31, 115409, Moscow (Russian Federation)
3. FOM-Institute AMOLF, Science Park 113, 1098 XG Amsterdam (Netherlands)

Experiments on atoms in intense laser pulses and the corresponding exact ab initio solutions of the time-dependent Schroedinger equation (TDSE) yield photoelectron spectra with low-energy features that are not reproduced by the otherwise successful work horse of strong field laser physics: the 'strong field approximation' (SFA). In the semiclassical limit, the SFA possesses an appealing interpretation in terms of interfering quantum trajectories. It is shown that a conceptually simple extension towards the inclusion of Coulomb effects yields very good agreement with exact TDSE results. Moreover, the Coulomb quantum orbits allow for a physically intuitive interpretation and detailed analysis of all low-energy features in the semiclassical regime, in particular, the recently discovered 'low-energy structure' [C. I. Blaga et al., Nature Phys. 5, 335 (2009) and W. Quan et al., Phys. Rev. Lett. 103, 093001 (2009)].

• OSTI ID: 21554486
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 25 Vol. 105; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
74 ATOMIC AND MOLECULAR PHYSICS
APPROXIMATIONS
ATOMS
CALCULATION METHODS
DIFFERENTIAL EQUATIONS
ELECTRON SPECTROSCOPY
EQUATIONS
INCLUSIONS
IONIZATION
LASERS
MATHEMATICAL SOLUTIONS
ORBITS
PARTIAL DIFFERENTIAL EQUATIONS
PHOTOELECTRON SPECTROSCOPY
PULSES
SCHROEDINGER EQUATION
SEMICLASSICAL APPROXIMATION
SPECTROSCOPY
TIME DEPENDENCE
TRAJECTORIES
WAVE EQUATIONS