Discovery of 68Br in secondary reactions of radioactive beams

The proton-rich isotope Br was discovered in secondary fragmentation reactions of fast radioactive beams. Proton-rich secondary beams of Kr and Br, produced at the RIKEN Nishina Center and identified by the BigRIPS fragment separator, impinged on a secondary Be target. Unambiguous particle identific...

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Detalles Bibliográficos
Autores: Wimmer, Kathrin, Doornenbal, P., Korten, W., Aguilera, P., Algora, Alejandro, Ando, T., Arici, T., Baba, H., Blank, B., Boso, A., Chen, S., Corsi, A., Davies, P., De Angelis, G., De France, G., Doherty, D.T., Gerl, J., Gernhäuser, R., Jenkins, D.G., Koyama, S., Motobayashi, T., Nagamine, S., Niikura, M., Obertelli, A., Lubos, D., Rubio, Berta, Sahin, E., Saito, T.Y., Sakurai, H., Sinclair, L., Steppenbeck, D., Taniuchi, R., Wadsworth, R., Zielinska, M.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2019
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/196358
Acceso en línea:http://hdl.handle.net/10261/196358
Access Level:acceso abierto
Palabra clave:New isotope
Direct reaction
Radioactive beams
Descripción
Sumario:The proton-rich isotope Br was discovered in secondary fragmentation reactions of fast radioactive beams. Proton-rich secondary beams of Kr and Br, produced at the RIKEN Nishina Center and identified by the BigRIPS fragment separator, impinged on a secondary Be target. Unambiguous particle identification behind the secondary target was achieved with the ZeroDegree spectrometer. Based on the expected direct production cross sections from neighboring isotopes, the lifetime of the ground or long-lived isomeric state of Br was estimated. The results suggest that secondary fragmentation reactions, where relatively few nucleons are removed from the projectile, offer an alternative way to search for new isotopes, as these reactions populate preferentially low-lying states.

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