Attosecond strobing of two-surface population dynamics in dissociating H₂+

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DOIResolve DOI: http://doi.org/10.1103/PhysRevLett.98.073003
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TypeArticle
Journal titlePhysical Review Letters
ISSN0031-9007
Volume98
Issue7
Article number73003
SubjectDissociation; Ions; Kinetic energy; Laser pulses; Light modulation; Surface phenomena; Attosecond strobing; Correlated ions; Infrared laser pulses; Population dynamics; Hydrogen
AbstractUsing H2+ and D2+, we observe two-surface population dynamics by measuring the kinetic energy of the correlated ions that are created when H2+ (D2+) ionize in short (40-140 fs) and intense (1014W/cm2) infrared laser pulses. Experimentally, we find a modulation of the kinetic energy spectrum of the correlated fragments. The spectral progression arises from a hitherto unexpected spatial modulation on the excited state population, revealed by Coulomb explosion. By solving the two-level time-dependent Schrödinger equation, we show that an interference between the net-two-photon and the one-photon transition creates localized electrons which subsequently ionize. © 2007 The American Physical Society.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada
Peer reviewedYes
NPARC number21276171
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Record identifiercf9f2a53-18c0-4ce2-82a5-67ca5b2514e6
Record created2015-09-28
Record modified2016-05-09
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