caa a22 4500 475759826 CHVBK 20180406123547.0 cr unu---uuuuu 170329e20001201xx s 000 0 eng 10.1023/A:1009551304262 doi (NATIONALLICENCE)springer-10.1023/A:1009551304262 The influence of ultrashort excitations on the vibrational dynamics in a diatomic molecule [Elektronische Daten] [V. Eryomin, I. Umanskii, N. Kuz'menko, L. Ievleva] The problem of vibrational wave packet dynamics in the system of two electronic states of a diatomic molecule, where the states are coupled by infinitely short light pulses, is solved. The electronic states were modeled by shifted harmonic oscillators with different frequencies. Exact expressions for the probability densities of the wave packets in the ground and excited states were derived. The spatial, spectral, and temporal characteristics of the wave packets, namely, the range of motion, spatial width, mean energy, spectral width (the mean number of vibrational states in a wave packet), and the autocorrelation function, were calculated as functions of the molecular parameters (the frequency ratio and the distance between the potential minima) and of the delay time between the light pulses. The possibility of controlling the mean energy and spectral width of the wave packets in the ground electronic state by varying the delay time is considered. It was shown that "squeezed" wave packets can be prepared in the ground electronic state if the upper electronic state is shallow. Plenum Publishing Corporation, 2000 wave packet nationallicence ground electronic state nationallicence diatomic molecule nationallicence harmonic oscillator nationallicence Green's function nationallicence "squeezed" state nationallicence quantum dynamics nationallicence femtochemistry nationallicence Eryomin V. Department of Chemistry, M. V. Lomonosov Moscow State University, Leninskie Gory, 119899, Moscow, Russian Federation aut Umanskii I. Saratov State Agrarian University, 1 Teatral'naya pl., 410600, Saratov, Russian Federation aut Kuz'menko N. Department of Chemistry, M. V. Lomonosov Moscow State University, Leninskie Gory, 119899, Moscow, Russian Federation aut Ievleva L. Saratov State Agrarian University, 1 Teatral'naya pl., 410600, Saratov, Russian Federation aut Russian Chemical Bulletin Kluwer Academic Publishers-Plenum Publishers 49/12(2000-12-01), 1960-1967 1066-5285 49:12<1960 2000 49 11172 https://doi.org/10.1023/A:1009551304262 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1009551304262 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Eryomin V. Department of Chemistry, M. V. Lomonosov Moscow State University, Leninskie Gory, 119899, Moscow, Russian Federation aut NATIONALLICENCE 700 1- Umanskii I. Saratov State Agrarian University, 1 Teatral'naya pl., 410600, Saratov, Russian Federation aut NATIONALLICENCE 700 1- Kuz'menko N. Department of Chemistry, M. V. Lomonosov Moscow State University, Leninskie Gory, 119899, Moscow, Russian Federation aut NATIONALLICENCE 700 1- Ievleva L. Saratov State Agrarian University, 1 Teatral'naya pl., 410600, Saratov, Russian Federation aut NATIONALLICENCE 773 0- Russian Chemical Bulletin Kluwer Academic Publishers-Plenum Publishers 49/12(2000-12-01), 1960-1967 1066-5285 49:12<1960 2000 49 11172 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer