Fast-beam study of H2+ ions in an intense femtosecond laser field

Ian Williams, P. McKenna, B. Srigengan, I.M.G. Johnston, W.A. Bryan, J.H. Sanderson, A.A.A. El-Zein, T.R.J. Goodworth, W.R. Newell, P.F. Taday, A.J. Langley

Research output: Contribution to journalArticlepeer-review

90 Citations (Scopus)


A fast beam of H-2(+) ions, produced from a low energy ion accelerator, has been used for the first time in intense laser field experiments. The technique has enabled neutral dissociation products to be analysed and detected for the first time in such studies. Energy spectra of neutral and ionized fragments, product yields as a function of focused laser intensity and angular distributions of neutral dissociation products have been measured. Significant differences are observed between the present results and those obtained from experiments involving neutral H-2 molecules. These differences are indicative of the precursor H-2 molecule playing an important and hitherto neglected formative role in the laser-induced fragmentation processes.
Original languageEnglish
Pages (from-to)2743-2752
Number of pages10
JournalJournal of Physics B: Atomic Molecular and Optical Physics
Publication statusPublished - 2000


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