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Published on: July 19, 2019
Quest for Cooper Pair Transfer in Heavy-Ion Reactions: The ^{206}Pb+^{118}Sn Case
S Szilner1, L Corradi2, J Diklić1
1<a href="https://ror.org/02mw21745">Ruđer Bošković Institute</a>, HR-10000 Zagreb, Croatia.
Abstract:
In this Letter we report on effects of nucleon-nucleon correlations probed in nucleon transfer reactions with heavy ions. We measured with high efficiency and resolution a complete set of observables for neutron transfer channels in the ^{206}Pb+^{118}Sn system employing a large solid angle magnetic spectrometer, which allowed us to study a wide range of internuclear distances via a detailed excitation function. The coupled channel theory, based on an independent particle transfer mechanism, follows the experimental transfer probabilities for one- and two-neutron pick-up and stripping channels. The experimental two-neutron transfer cross sections indicate that in reactions between pair-vibrational (closed shell) and pair-rotational (open shell) nuclei, correlations manifest via pair-addition and pair-removal modes, which constitute one of the elementary modes of excitations in nuclei.
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