Inelastic scattering of positrons by lithium-isoelectronic ions

Positronium Formation During Inelastic Collisions of Positrons with Sodium Atoms

“…(55) in Ref. [16], corresponding to di †erent partial waves and we found that excellent convergence (for all values of l \ 0, 1, 2, . .…”

“…The kernels p) and x) are deÐned by eqs K 12 q (x, K 21 q (p, (29) and (31) in Ref. [16] in terms of the positronium wave function and the target wave function which was chosen in the present work in the form developed by Clementi and Roetti [13]. Thus these kernels are reanalysed through the use of Clementi and Roetti wave functions and their forms become new.…”

“…The coupling kernels p@) and K 13 q (x, K 31 q (p@, x), see also Ref. [16], are deÐned and reanalysed in the same way as p) and x) with the replacement of the K 12 q (x, K 21 q (p, Ps wave function, and by the excited Ps wave func-K 2 V int q(2) tion, and respectively. k 3…”

“…V int q(3), In order to calculate the reactance and transition matrices (R and T, respectively) required for the evaluation of the partial and total cross sections of the Ðrst, second and third channels we employed the iterative Green-function partialwave expansion technique described in details in Refs [10] and [16] within the framework of the coupled-static approximation.…”