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Electron Localization in Molecular Fragmentation of H{sub 2} by Carrier-Envelope Phase Stabilized Laser Pulses

Journal Article · · Physical Review Letters
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  1. Max-Planck-Institut fuer Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg (Germany)
  2. Instituto Federal de Educacao, Ciencia e Tecnologia do Rio de Janeiro (IFRJ), Nilopolis, RJ (Brazil)
  3. Max-Planck Advanced Study Group at CFEL, D-22607 Hamburg (Germany)
  4. James R. Macdonald Laboratory, Kansas State University, Manhattan, Kansas 66506-2606 (United States)
Fully differential data for H{sub 2} dissociation in ultrashort (6 fs, 760 nm), linearly polarized, intense (0.44 PW/cm{sup 2}) laser pulses with a stabilized carrier-envelope phase (CEP) were recorded with a reaction microscope. Depending on the CEP, the molecular orientation, and the kinetic energy release (KER), we find asymmetric proton emission at low KERs (0-3 eV), basically predicted by Roudnev and Esry, and much stronger than reported by Kling et al. Wave packet propagation calculations reproduce the salient features and discard, together with the observed KER-independent electron asymmetry, the first ionization step to be the reason for the asymmetric proton emission.
OSTI ID:
21370852
Journal Information:
Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 21 Vol. 103; ISSN 0031-9007; ISSN PRLTAO
Country of Publication:
United States
Language:
English