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VOLUME 14 | ISSUE 11 | PAGE 607
Effect of Strong Repulsion of Compound Particles (Nuclei, Atoms) at Short Distances
Let us consider the collision of two compound particles consisting of identical fermions (two atoms, two atomic nuclei). It has been known for a long time that the Pauli principle should lead to a strong repulsion between the particles at short distances, and this is always taken into account, for example, when choosing phenomenological potentials for the interaction between the atoms. Repulsion sets in at distances between particles ri2 such that their wave functions begin to overlap. We shall develop below a quantum-mechanical theory of this effect.