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Strong-Field Tunneling from a Coherent Superposition of Electronic States

MPG-Autoren
http://pubman.mpdl.mpg.de/cone/persons/resource/persons37834

Fechner,  Lutz
Division Prof. Dr. Thomas Pfeifer, MPI for Nuclear Physics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons37832

Camus,  Nicolas
Division Prof. Dr. Thomas Pfeifer, MPI for Nuclear Physics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons30892

Pfeifer,  Thomas
Division Prof. Dr. Thomas Pfeifer, MPI for Nuclear Physics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons30822

Moshammer,  Robert
Division Prof. Dr. Thomas Pfeifer, MPI for Nuclear Physics, Max Planck Society;

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Zitation

Fechner, L., Camus, N., Ullrich, J., Pfeifer, T., & Moshammer, R. (2014). Strong-Field Tunneling from a Coherent Superposition of Electronic States. Physical Review Letters, 112(21): 213001. doi:10.1103/PhysRevLett.112.213001.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-001A-1E7E-5
Zusammenfassung
Laser-induced tunnel ionization from a coherent superposition of electronic states in Ar+ is studied in a kinematically complete experiment. Within a pump-probe scheme a spin-orbit wave packet is launched through the first ionization step from the neutral species. The multielectron coherent wave packet is probed as a function of time by the second pulse which ionizes the system to Ar++. By measuring delay-dependent electron momentum distributions we directly image the evolution of the nonstationary multielectron wave function. Comparing the results with simulations we test common assumptions about electron momentum distributions and the tunneling process itself.