Double ionization of atomic negative ions in an intense laser field

Jason Greenwood, G.F. Collins, J. Pedregosa-Gutierrez, J. McKenna, A. Murphy, J.T. Costello

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


In recent years there have been many studies of multiple ionization of closed shell rare gas atoms by intense laser fields. Until now no similar work has been done in the study of more diverse targets such as negative ions where low binding energies and strong electron correlations could yield distinctive behaviour. We present the first results of ionization of more than one electron from a range of atomic negative ions by intense laser pulses. Although these pulses are long by modern standards, and tend to produce sequential ionization in atoms, the positive ion yields from the negative ions do not depend predictably on the ionization potentials. This suggests that there may, intriguingly, be an alternative mechanism enhancing double ionization at low intensities.
Original languageEnglish
Pages (from-to)L235-L240
Number of pages6
JournalJournal of Physics B: Atomic Molecular and Optical Physics
Issue number16
Publication statusPublished - 28 Jul 2003

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Physics and Astronomy(all)


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