Artículo
Probing proton halo effects in the 8B+64Zn collision around the Coulomb barrier
Autor/es | Spartà, Roberta
Di Pietro, Alessia Figuera, Pierpaolo Tengblad, Olof Moro Muñoz, Antonio Matías Martel Bravo, Ismael Fernández García, Juan Pablo Viñals, Silvia |
Departamento | Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear |
Fecha de publicación | 2021 |
Fecha de depósito | 2022-01-13 |
Publicado en |
|
Resumen | Proton halo effects in the 8B+64Zn reaction at an energy around 1.5 times the Coulomb barrier have been studied at HIE-ISOLDE CERN using, for the first time, the only existing postaccelerated 8B beam. This, together with ... Proton halo effects in the 8B+64Zn reaction at an energy around 1.5 times the Coulomb barrier have been studied at HIE-ISOLDE CERN using, for the first time, the only existing postaccelerated 8B beam. This, together with the use of a high granularity and large solid angle detection system, allowed for a careful mapping of the elastic angular distribution, especially in the Coulomb-nuclear interference region. Contrary to what is observed for the one-neutron halo nucleus 11Be on the same target in a similar energy range, the analysis of the elastic scattering angular distribution shows only a modest suppression of the Coulomb-nuclear interference peak, with no remarkable enhancement of the total reaction cross-section. Inclusive angular and energy distributions of 7Be produced in direct reaction processes have also been measured. The comparison of these data with the results of theoretical calculations for the elastic and non-elastic breakup contributions indicate that both processes are important. Overall, the experimental data suggest a 8B collision dynamics at the barrier very different from the one of neutron halo nuclei, showing only modest effects of coupling to continuum. This behaviour can be interpreted as due to the presence of the additional Coulomb interactions halo-core and halo-target together with the presence of the centrifugal barrier felt by the valence proton of 8B. |
Agencias financiadoras | European Union (UE) Istituto Nazionale di Fisica Nucleare (INFN) Italia Science and Technology Facilities Council (STFC) Reino Unido |
Identificador del proyecto | Subvención nº 654002
“ELEGANT” PGC2018-095640-B-100 FIS2017-88410-P PDI2019-104390GB-100 FPA2016-77689-C2-1-R PGC2018-096994-B-C21 PGC2018-096994-B-C22 RTI2018-098868-B-I00 |
Cita | Spartà, R., Di Pietro, A., Figuera, P., Tengblad, O., Moro Muñoz, A.M., Martel Bravo, I.,...,Viñals, S. (2021). Probing proton halo effects in the 8B+64Zn collision around the Coulomb barrier. Physics Letters B, 820, 136477. |
Ficheros | Tamaño | Formato | Ver | Descripción |
---|---|---|---|---|
1-s2.0-S0370269321004172-main.pdf | 522.3Kb | [PDF] | Ver/ | |