Discovery of Br-68 in secondary reactions of radioactive beams

Wimmer K.; Doornenbal P.; Korten W.; Aguilera P.; Algora, A; Ando T.; Arici T.; Baba, H.; Blank B.; Boso A.; Chen S.; Corsi A.; Davies P.; de Angelis G.; de France G.; et. al.

Abstract

The proton-rich isotope Br-68 was discovered in secondary fragmentation reactions of fast radioactive beams. Proton-rich secondary beams of (70,71,72) Kr and Br-70, produced at the RIKEN Nishina Center and identified by the BigRIPS fragment separator, impinged on a secondary Be-9 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-68 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. (C) 2019 The Authors. Published by Elsevier B.V.

Más información

Título según WOS: Discovery of Br-68 in secondary reactions of radioactive beams
Título según SCOPUS: Discovery of 68Br in secondary reactions of radioactive beams
Título de la Revista: PHYSICS LETTERS B
Volumen: 795
Editorial: ELSEVIER SCIENCE BV
Fecha de publicación: 2019
Página de inicio: 266
Página final: 270
Idioma: English
DOI:

10.1016/j.physletb.2019.06.014

Notas: ISI, SCOPUS