Role of correlations in two-neutron transfer reactions

Jesus Lubian,Barbara Paes,Francesco Cappuzzello,Uiran U Da Silva,Jonas L Ferreira,Erica N Cardozo,Manuela Cavallaro,Roberto Linares,Ruben Lichtenthäler,Diana Carbone,G De Angelis,L Corradi

doi:10.1051/epjconf/201922301035

Jesus Lubian, Barbara Paes + Show 10 more

Open Access

https://doi.org/10.1051/epjconf/201922301035

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Abstract

This work presents theoretical results compared with the experimental data for the two–neutron transfer angular distribution in which a beam of 18O nucleus, at 84 MeV incident energy, has collided onthe 13C, 28Si, and 64Ni targets. The two-neutron transfer in the 9Be(7Be,9Be)7Be reaction, at 23.1 MeV incident energy, was also analyzed. The main goal was to verify the relevance of the pairing correlation of the two transferred neutrons on the cross sections and to show its role when both neutrons are transferred to states with a low and high degree of collectivity.

Highlights

The study of pairing correlation in two-nucleon transfer reaction has intensively been performed in the last decades
Due to restrictive radioprotection rules, these reactions were prohibited. Another alternative reaction was proposed in the Istituto Nazionale di Fisica Nucleare – Laboratori Nazionali del Sud (Italy) by considering the (18O,16O) reaction, once the 18O nucleus can be considered as composed by an inert core of 16O and two valence neutrons
If the coupling interaction between the partitions is extended to higher-orders, the coupled reaction channel (CRC) method will be invoked

Summary

Introduction

The study of pairing correlation in two-nucleon transfer reaction has intensively been performed in the last decades. Another alternative reaction was proposed in the Istituto Nazionale di Fisica Nucleare – Laboratori Nazionali del Sud (Italy) by considering the (18O,16O) reaction, once the 18O nucleus can be considered as composed by an inert core of 16O and two valence neutrons In this sense, some reactions were measured considering the 18O nucleus as projectile at 84 MeV incident energy, and 12,13C [1, 2], 16O [3, 4], 28Si [5] and 64Ni [6] as target to analyze the feasibility of the (18O,16O) reaction as substitute of the (t,p) one, and to investigate the role of the pairing correlation of both transferred neutrons in the transfer reaction cross sections obtained performing coupled reaction channel calculations [7]. The section is devoted to the results and discussions while in the last section, we give some remarks and show some perspectives on our work guidelines

Results

IC sequential

Conclusions