Journal
PHYSICAL REVIEW LETTERS
Volume 103, Issue 21, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.103.213003
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Funding
- NSF
- Division of Chemical Sciences, Office of Basic Energy Sciences, Office of Energy Research, US DOE
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Fully differential data for H-2 dissociation in ultrashort (6 fs, 760 nm), linearly polarized, intense (0.44 PW/cm(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.
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