Quantum scattering theory of rotational relaxation and spectral line shapes in H2–He gas mixtures

摘要: A systematic study is presented of the rotational relaxation and spectral line shape properties dilute gas mixtures H2 in He, an effort to determine radial angular dependence H2–He intermolecular potential. The quantum mechanical theory gases reviewed, we express results terms a matrix cross sections that determines each correlation function, thus system. section calculated from binary collision transition amplitudes, or S elements, for scattering. Morse‐spline‐fitted‐van der Waals potential form V0(R)+V2(R)P2(cosθ) assumed treat hydrogen molecule as rigid rotor. Schrodinger equation solved close‐coupling approximation using method Gordon. We apply sound absorption measurements relaxation, NMR spin‐lattice times, Q branches pure Raman spectrum mixtures. Elasti...