DREB2022 - Direct Reactions with Exotic Beams

Session

FRI1

1 Jul 2022, 11:00

Facultad de Ciencias de la Comunicación (University of Santiago de Compostela)

Conveners

FRI1

• Tomohiro Uesaka (RIKEN)

272. Experimental study of many-neutron systems 7He and 7H

Siwei Huang (Peking University)

01/07/2022, 11:00

Oral contribution

Structure of neutron-rich nuclei located around the neutron drip line and their multi-neutron correlations have been among the hottest topics in nuclear physics. The properties of these nuclei serve as an important benchmark of modern nuclear theories. Moreover, such unstable systems could decay via emission of multiple neutrons. These constituent neutrons, when detected, will provide direct...

203. Shell evolution from N = 34 towards N = 40: first 2$^{+}$ state in $^{52}$Ar and the first excited 0$^{+}$ state in $^{54}$Ca

Hongna Liu (Beijing Normal University)

01/07/2022, 11:20

Oral contribution

Shell gaps represent the backbone of the nuclear structure and are a direct fingerprint of the in-medium many-body interactions. The nuclear shell structure is found to change, sometimes drastically, with the number of protons and neutrons, revealing how delicate the arrangement of interacting nucleons is. Recent experimental evidence favors a new doubly-magic nucleus $^{54}$Ca with a neutron...

181. Reaching interesting reactions cross-sections by measuring radioactive recoils with AMS technique: the successful cases of 10Be, 14C and 26Al.

Luis Armando Acosta Sanchez (IFUNAM)

01/07/2022, 11:40

Oral contribution

The present work is devoted to show a successful alternative method to measure specific direct reaction cross sections, related to the production of a particular radioactive recoil. The method is based on the production of a relatively small yield of a radioactive nucleus, assisted by ion and/or low-neutron irradiation, fixing a specific reaction at an interesting low energy. The irradiated...

285. α-cluster structure of 18Ne

Dr Marina Barbui (Cyclotron Institute, Texas A&M University)

01/07/2022, 12:00

Oral contribution

We studied alpha-clustering in 18Ne and compared it with alpha-clustering in the mirror nucleus 18O. To the best of our knowledge, this is one of the first detailed experimental studies of clustering phenomena in mirror systems. The excitation function for α+14O resonant elastic scattering was measured in the energy range from 7.5 to 17 MeV. Measurements were performed at the Texas A&M...

267. Structural evolution of neutron-rich calcium isotopes

Dr Sidong Chen (1.The University of Hong Kong, 2.University of York)

01/07/2022, 12:20

Oral contribution

The studies in the past decades revealed that the canonical magic numbers established for stable nuclei may not extend their universality to exotic nuclei, while new magic numbers emerge in some nuclei [1]. These new features often can be traced back to certain characteristic mechanisms of nuclear forces [1,2], for instance, the tensor force, which can vary the spin-orbit energy splitting and...

270. Exploring the clustering in neutron-rich Be and B isotopes by reactions of 9Li beam on LiF target

Nikola Vukman (Ruđer Bošković Institute, Zagreb, Croatia)

01/07/2022, 12:40

Oral contribution

A promising way to study the clustering and molecular like structures, even in neutron-rich light nuclei, is to explore the sensitivity of transfer reactions to the structure of the nuclei in the reaction entrance channel. Evolution of the clustering phenomena with the addition of neutrons in beryllium isotopes, from the $\alpha$-$\alpha$ two-center clustering in $^8$Be to the molecular like...