We discovered a novel highly efficient ionization mechanism in hydrocarbon molecules of various sizes that drives the molecules into unexpectedly high charge states at very moderate laser intensities. Subsequently it leads to the complete molecular decomposition via a two-stage Coulomb explosion that involves the concerted emission of all protons with remarkably high kinetic energies.
S. Roither, X. Xie, D. Kartashov, Li Zhang, M. Schöffler, H. Xu, A. Iwasaki, T. Okino, K. Yamanouchi, A. Baltuska and M. Kitzler:
High Energy Proton Ejection from Hydrocarbon Molecules Driven by Highly Efficient Field Ionization
Phys. Rev. Lett. 106, 163001 (2011).
In our letter we describe the discovery of a novel highly efficient ionization mechanism in hydrocarbon molecules of various sizes that drives the molecules into unexpectedly high charge states at very moderate laser intensities. Subsequently it leads to the complete molecular decomposition via a two-stage Coulomb explosion that involves the concerted emission of all protons with remarkably high kinetic energies. |
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We observed an optical signature of attosecond ionization modulation with a focused few-cycle laser pulse in a transparent solid.The method holds promise for developing an attosecond metrology for bulk solids, in which, unlike in the established attosecond metrology of gases and surfaces, direct detection of charged particles is unfeasible.
A.V. Mitrofanov, A.J. Verhoef, E.E. Serebryannikov, J. Lumeau, L. Glebov, A.M. Zheltikov and A. Baltuska:
Optical Detection of Attosecond Ionization Induced by a Few-Cycle Laser Field in a Transparent Dielectric Material
Phys. Rev. Lett 106, 147401 (2011). |
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