Study of differential scattering by non-spherical intermoleeular short-range forces for the systems He, Ar−N₂, CO, NO, CO₂

Abstract

This paper describes some results obtained while studying anisotropic repulsive forces by the small angle differential scattering method. The results of an experimental and numerical study of the anisotropic scattering for atom-molecular He, At-CO, NO, N2, CO2 systems are presented.

Rotational-vibrational rainbows in impulsive electron — diatomic molecule collisions: I. state-to-state transitions

“…In a model study for Li + -H 2 collisions vibrational rainbows appeared as broad maxima in the differential cross sections for 0 ~ 1 and 0 --* 2 vibrational transitions. In experiments [7] and semiclassieal calculations [8] structures consistent with vibrational rainbows have been found for high energy/small angle Ar--COz scattering. Independently, vibrational rainbow effects have been observed and analysed by Leonas and Rodionov (see [9] and references given there) for very high energy (~ 1 keV) H e -N z scattering.…”

Spectra of Ar–CO2 from ab initio potential energy surfaces

“…The large body of experimental data available for Ar-CO 2 include measurements of its spectra, 1-6 interaction second virial coefficients, 7-13 molecular beam scattering, 14,15 infrared, [16][17][18][19][20][21][22] and Raman 23 pressure broadenings, transport [24][25][26][27][28] and nuclear spin relaxation 29,30 properties. The experimental data have been used to obtain a number of empirical 5,14,[31][32][33][34][35] and semiempirical 36 potential energy surfaces ͑PESs͒ for this complex.…”

Vibrational Structure and Predissociation of Ar-CO2by CO2Symmetric Stretching Mode Coupled with Ar Motion

“…Experimental studies on infrared spectra, Raman pressure broadening, scattering phenomena, transport properties, and nuclear spin relaxation of Ar-CO 2 have also been reported. [13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29] All these studies were for understanding mainly either the interaction of Ar with CO 2 or the nature of the van der Waals bond. The vibrational predissociation of Ar-CO 2 has been rarely studied.…”

“…The continuum wave function consists of two parts; one is the rotational ( j ) motion of CO 2 and the other is a relative translational motion of CO 2 with respect to Ar. The Schrödinger equation for is (18) Under IOS, we set because total angular momentum is fixed as zero, then the scattering equation we obtain is one-dimensional, i.e., (19) where B is a rotational constant of CO 2 at the symmetric stretching vibrational state υ' [the third term in Eq. 18], is the averaged V 2 integral over [the fourth term in Eq.…”