Interference Oscillations in the Angular Distribution of Laser-Ionized Electrons near Ionization Threshold

Journal Article · Fri Apr 14 04:00:00 EDT 2006 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.96.143003· OSTI ID:20775161

Arbo, D G; Yoshida, S; Persson, E; Dimitriou, K I; Burgdoerfer, J ^[1]

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1. Institute for Theoretical Physics, Vienna University of Technology, Wiedner Hauptstrasse 8-10/136, A-1040 Vienna (Austria)

We analyze the two-dimensional momentum distribution of electrons ionized by few-cycle laser pulses in the transition regime from multiphoton absorption to tunneling by solving the time-dependent Schroedinger equation and by a classical-trajectory Monte-Carlo simulation with tunneling (CTMC-T). We find a complex two-dimensional interference pattern that resembles above threshold ionization (ATI) rings at higher energies and displays Ramsauer-Townsend-type diffraction oscillations in the angular distribution near threshold. CTMC-T calculations provide a semiclassical explanation for the dominance of selected partial waves. While the present calculation pertains to hydrogen, we find surprising qualitative agreement with recent experimental data for rare gases [A. Rudenko et al., J. Phys. B 37, L407 (2004)].

• OSTI ID: 20775161
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 14 Vol. 96; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ANGULAR DISTRIBUTION
COMPUTERIZED SIMULATION
DIFFRACTION
ELECTRONS
EXPERIMENTAL DATA
HYDROGEN
INTERFERENCE
LASERS
MONTE CARLO METHOD
MULTI-PHOTON PROCESSES
OSCILLATIONS
PARTIAL WAVES
PHOTOIONIZATION
PHOTON-ATOM COLLISIONS
RARE GASES
SCHROEDINGER EQUATION
SEMICLASSICAL APPROXIMATION
TIME DEPENDENCE
TUNNEL EFFECT
TWO-DIMENSIONAL CALCULATIONS