Abstract
We explore the effect of nuclear mass on the laser-driven electron localization process. We dissociate a mixed H and D target with intense, carrier-envelope-phase (CEP) stable 6 fs laser pulses and detect the products in a reaction microscope. We observe a very strong CEP-dependent asymmetry in proton and deuteron emission for low dissociation energy channels. This asymmetry is stronger for H than for D. We also observe a large CEP offset between the asymmetry spectra for H and D. Our theoretical simulations, based on a one-dimensional two-channel model, agree very well with the asymmetry spectra, but fail to account properly for the phase difference between the two isotopes.
- Received 26 November 2013
DOI:https://doi.org/10.1103/PhysRevA.89.041403
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