THE USE OF THE ENERGY SUDDEN APPROXIMATION IN THE M-SCALING OF ROTATIONAL CROSS-SECTIONS

We invoke energy sudden (ES) dynamics in the projection- or m-scaling of crossed-beam rotational energy transfer cross-sections. We identify the dynamical quantities which must be input to the scaling analysis and note their symmetry properties. Also we show that a partial m-summ ing of cross-sections is sufficient to effect significant simplificati ons of the scaling. Application of the scaling analysis is made to int egral cross-sections in the scattering of He + CO. It is found that th e ES scaling is very effective in describing the m-dependent transitio ns.