Νικολαΐδης, Κλεάνθης A.Κομνηνός, ΓιάννηςΜερκούρης, Θεόδωρος Δ.By solving the time-dependent Schrodinger equation nonperturbatively by the state-specific expansion approach, we have obtained reliable results showing the dependence of the formation of the excitation profile of the autoionizing state He '2s2p'(1)P(o) for Gaussian pulses of intensities in the range I approximate to 10(10) W/cm(2) to I approximate to 10(15) W/cm(2), and of duration 100-2 fs. Conclusions are drawn as regards the breakdown of first-order time-dependent perturbation theory.COLLEGE PKAdobe PDF[4]https://hdl.handle.net/10442/128521050-294710.1103/PhysRevA.83.015403engAmerican Physical SocietyPhysical Review APhysics, Atomic, Molecular & ChemicalNonperturbative computation of the time-resolved formation of the profile of autoionizing states as a function of the intensity and duration of ultrashort pulsesΆρθρο σε επιστημονικό περιοδικό2011-01-24Δημοσίευση σε περιοδικόPublication in journalΟπτικήOpticsisi - Optics includes resources that deal with the genesis and propagation of light, the changes that it undergoes and produces, and other phenomena closely associated with it. Resources in this category cover subject areas such as lasers and laser technology, infrared physics and technology, microwave technology, quantum optics, lightwave technology, fiber optics, opto-electronics, and photonics. Resources on photometry and luminescence are also included in this category.Επιστημονικό άρθροScientific articleΕθνικό Ίδρυμα Ερευνών (ΕΙΕ)Greek Aggregator OpenArchives.gr | National Documentation Centre (EKT)