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[en] We consider the generalization of the kinematic apse to nonreactive polyatom--polyatom impulsive collisions, dissociative atom--molecule impulsive collisions, and (partially) impulsive reactive atom--diatom collisions. Appropriate generalizations of the kinematic apse are obtained along which there is a classical propensity for preserving the projection of the total intrinsic spin. In the case of reactive scattering, we discuss several different situations for which such a propensity occurs. For reactive systems in which no such propensity exists, the analysis may still provide a basis for classifying reactions
Journal
Journal of Chemical Physics; ISSN 0021-9606; 
; v. 80(1); p. 144-148
; v. 80(1); p. 144-148
[en] Relative coefficients of collisional broadening caused by N2O molecules and their temperature dependences are determined for absorption lines (10''00-00''01 transition, R-branch) of the CO2 molecule. (authors)
Journal
Zhurnal Prikladnoj Spektroskopii; ISSN 0514-7506; ; v. 78(5); p. 692-696
; v. 78(5); p. 692-696
[en] Once a controversial idea, the fact that gases like air have weight can easily be demonstrated using reasonably precise scales in the modern teaching laboratory. But unlike a liquid, where a mechanical model suggests a pile of hard spheres resting on each other, gas molecules are in continual motion and can have minimal interaction. How should we think about the effect these molecules have on the scale? And more importantly, how should we explain it to students? Several models of gas behavior are employed to answer these questions and it is shown how the weight of a gas is, like electric current, an emergent phenomena in contrast to the weight of a liquid which is direct or causal. (paper)
Journal
[en] Energy removed from highly vibrationally excited polyatomic molecules by polyatomic collision partners decreases with increasing number of atoms in the hot molecule. The trend is qualitatively predicted by two quasi-statistical models of energy transfer, and calculations of energy removal by the transitional mides model gives agreement with experiment. (orig.)
Journal
Chemical Physics Letters; ISSN 0009-2614; ; v. 74(3); p. 437-441
; v. 74(3); p. 437-441
[en] We measured the absolute attachment cross-sections of water and alcohol molecules colliding with protonated water and alcohol clusters. Dynamical arguments are used to explain the lower than geometrical cross-sections at small sizes. (paper)
Journal
Journal of Physics. Conference Series (Online); ISSN 1742-6596; ; v. 635(3); [1 p.]
; v. 635(3); [1 p.]
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