A coherent control scheme for the population distribution in the vibrational states of nonpolar molecules is proposed. Our theoretical analysis and results of numerical simulations for the interaction of the hydrogen molecular ion in its electronic ground state with an infrared laser pulse reveal a selective two-photon transition between the vibrational states via a coupling with the first exci...

The enormous progress made in recent years in the techniques for detecting and analysing highly excited vibrational states of polyatomic molecules has prompted development of theoretical quantum mechanical methods to determine and characterize these states. A number of techniques, both approximate and exact, have been proposed for solving the vibrational SchroŽ dinger equation and special atten...

In single-molecule transistors, we observe inelastic cotunneling features that correspond energetically to vibrational excitations of the molecule, as determined by Raman and infrared spectroscopy. This is a form of inelastic electron tunneling spectroscopy of single molecules, with the transistor geometry allowing in situ tuning of the electronic states via a gate electrode. The vibrational fe...

The microwave spectrum of HCCF and DCCF has been investigated in all vibrational states with energy up to 1500 cm -1. In the ground state and low-lying vibrational states mm-wave measurements up to 210 GHz Avere made. In some cases a detailed analysis of the vibrational state rotation spectrum including the effects of Z-type resonance, and the determination of the anharmonicity constant gtt was...

The dynamics of fast gas heating in a high power microwave discharge in air, is investigated in the framework of FDTD simulations of the Maxwell equations coupled with the fluid simulations of the plasma. It is shown that, an ultra-fast gas heating of the order of several 100 Kelvins occurs in less than 100 ns. The main role in the heating is played by the electron impact dissociation of , diss...

Many properties of alloyed chalcogenide glasses can be closely correlated with the average coordination of these compounds. This is the case, for example, of the ultrasonic constants, dilatometric softening temperature and the vibrational densities of states. What is striking, however, is that, at a given average coordination, these properties are nevertheless almost independent of the elementa...