Εξειδίκευση τύπου :	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	Quantum chemistry on the time axis: Electron correlations and rearrangements on femtosecond and attosecond scales
Δημιουργός/Συγγραφέας:	[EL] Νικολαΐδης, Κλεάνθης A.[EN] Nicolaides, Cleanthes A.
Εκδότης:	Taylor and Francis Ltd.
Ημερομηνία:	2016
Γλώσσα:	Αγγλικά
ISSN:	0026-8976
DOI:	10.1080/00268976.2015.1080870
Περίληψη:	Recent developments toward the production and laboratory use of pulses of high intensity, and/or of very high frequency, and/or of ultrashort duration, make possible experiments which can produce time-resolved data on ultrafast transformations involving motions of electrons.The formulation, quantitative understanding and prediction of related new phenomena entail the possibility of computing and applying solutions of the many-electron time-dependent Schrödinger equation, for arbitrary electronic structures, including the dominant effects of Rydberg series, of multiply excited states and of the multi-channel continuous spectrum. To this end, we have proposed and applied to many prototypical cases the state-specific expansion approach (SSEA).The paper explains briefly the SSEA and outlines four of its applications to recently formulated problems concerning time-resolved electronic processes, where electron correlations are crucial. These are as follows: (1) the time resolution of the decay of polyelectronic unstable states, (2) the excitation and decay of strongly correlating doubly excited states and atto-time-resolution of their geometries, (3) the time-resolved process of formation of the interference profiles of resonance states during the femtosecond photoionisation of helium and aluminium, and (4) the relative time delay in the (2s, 2p) photoionisation of neon by an attosecond pulse.
Τίτλος πηγής δημοσίευσης:	Molecular Physics
Τόμος/Κεφάλαιο:	114
Τεύχος:	3-4
Σελίδες:	453-468
Θεματική Κατηγορία:	[EL] Φυσική και θεωρητική χημεία[EN] Physical and theoretical chemistry [EL] Ατομική φυσική (συμπ. μοριακή φυσική, σχετικότητα, κβαντική θεωρία και φυσική στερεάς κατάστασης)[EN] Atomic physics (Incl. molecular physics, relativity, quantum theory, and solid state physics)
Λέξεις-Κλειδιά:	attosecond science state-specific expansion approach Time-dependent Schrödinger equation time-resolved ultrafast electronic processes
Αξιολόγηση από ομότιμους (peer reviewed):	Ναι
Κάτοχος πνευματικών δικαιωμάτων:	© 2015 Taylor & Francis.
Εμφανίζεται στις συλλογές:	Ινστιτούτο Θεωρητικής και Φυσικής Χημείας (ΙΘΦΧ) - Επιστημονικό έργο