Double-Electron Above-Threshold Ionization Resonances as Interference Phenomena

Gregory Armstrong, Jonathan Parker, Kenneth Taylor

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)
269 Downloads (Pure)


We report calculations of double ionization energy spectra and momentum distributions of laser-driven helium due to few-cycle pulses of wavelength 195 nm. The results are obtained from full-dimensional numerical integration of the two electron time-dependent Schr¨odinger equation. A momentum-space analysis of doubly ionizing wavepackets shows that the concentric-ring structure of above-threshold double ionization, together with the associated structure of peaks in the total kinetic energy spectrum, may be attributed to wavepacket interference effects, where at least two doubly-ionizing wavepackets from different recollision events populate the same spatial hemisphere.
Original languageEnglish
Article number013024
Number of pages1
JournalNew Journal of Physics
Publication statusPublished - 19 Jan 2011

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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