where S(t) is the measurement, u f & is the final state, used as a ‘‘screen’’ onto which we project the dynamics, m(Q) is the coordinate dependent dipole coupling and uex(t)& is the evolving state that we wish to study. A range of techniques using different kinds of final states u f & have been implemented: time-resolved fluorescence spectroscopy; ionization/mass spectroscopy; stimulated emissi...

A model kinetic equation for accurate description of rarefied polyatomic gases is introduced. The collisions of polyatomic gas particles are modeled by a two term collision operator, one modeling only exchange of translational energy and the other modeling exchange of both translational and internal energies. The proposed kinetic model, which is an extension of the Rykov and Shakov models, pred...

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The difference between Ti(III) and Ti(IV) significantly influences the electrodeposition process of Ti in fluoride melt. In this study, we investigated melt structure LiF-KF with addition TiO 2 for both bulk titanium (Ti 0 ) by combining high-temperature Raman spectroscopic technique density functional theory calculations. spectra were characterized three kinds coordination structures: polyatom...

Polyatomic molecules have several electronic states that have similar energies. Consequently, their chemical dynamics often involve nonadiabatic transitions between multiple potential energy surfaces. Elucidating the complex reactions of polyatomic molecules is one of the most important tasks of theoretical and experimental studies of chemical dynamics. This paper describes our recent experimen...

Our previous molecular dynamics simulations on initial test systems have laid the foundation for understanding some of the effects of polyatomic bombardment. In this paper, we describe simulations of the bombardment of a more realistic model system, an overlayer of sec-butyl-terminated polystyrene tetramers on a Ag{1 1 1} substrate. We have used this model system to study the bombardment with X...

We explore the feasibility of optically forming long-range tetratomic and larger polyatomic molecules in their ground electronic state from ultracold pairs polar aligned by external fields. Depending on relative orientation interacting diatomic molecules, we find that a can be formed either as weakly bound complex very extended halo or pure molecule composed collinear nearly-collinear molecules...