Collisional Deactivation Rates of N2+(B2Σu+)

Temperature Dependence of Collisional Deactivation of Highly Vibrationally Excited Biphenylene

Collisional energy transfer between highly vibrationally excited biphenylene and a variety of monoand polyatomic bath gases has been measured at temperatures between 333 and 523 K. Biphenylene molecules were initially prepared with an additional vibrational energy of 28 490 cm by electronic absorption at 351 nm followed by fast internal conversion. The collisional deactivation was observed by d...

Energy-dependent collisional deactivation of vibrationally excited azulene

Collisional energy transfer parameters for highly vibrationally excited azulene have been deduced from new infrared fluorescence (lRF) emission lifetime data with an improved calibration relating IRF intensity to vibrational energy [J. Shi, D. Bernfeld, and J. R. Barker, J. Chern. Phys. 88, 6211 (1988), preceding paper]. In addition, data from previous experiments [M. J. Rossi, J. R. Pladziewic...

Collisional Velocities and Rates in

We consider a belt of small bodies (planetesimals, asteroids, dust particles) around a star, captured in one of the external or 1:1 mean-motion resonances with a massive perturber (protoplanet, planet). The objects in the belt collide with each other. Combining methods of celestial mechanics and statistical physics, we calculate mean collisional velocities and collisional rates, averaged over t...

Collisional deactivation of vibrationally highly excited azulene in compressed liquids and supercritical fluids

Isotropic inelastic and superelastic collisional rates in a multiterm atom

The spectral line polarization of the radiation emerging from a magnetized astrophysical plasma depends on the state of the atoms within the medium, whose determination requires considering the interactions between the atoms and the magnetic field, between the atoms and photons (radiative transitions), and between the atoms and other material particles (collisional transitions). In applications...