Browsing by Author "Munasingha, J."

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    Effect of long-range part of the potential on the elastic S-matrix element
    (Sri Lanka Association for the Advancement of Science, 2011) Shadini, A.M.D.M.; Munasingha, J.
    The quantum mechanical three-body Schrödinger equation can be reduced to a set of coupled differential equations when the projectile is easily breakable into two fragments and when scattering is a heavy stable nucleus. It has been found that the diagonal coupling potentials in this model take the inverse square form at sufficiently large radial distances and non-diagonal part of coupling potentials can be treated as sufficiently short-range to guarantee that numeral calculations are feasible. We will show that this long-range part of the potential has a small contribution to the elastic S-matrix element.