Penning-trap-assisted study of excitations in 88Br populated in β decay of 88Se
Czerwiński, M., Sieja, K., Rząca-Urban, T., Urban, W., Płochocki, A., Kurpeta, J., . . . Nobs, C. (2017). Penning-trap-assisted study of excitations in 88Br populated in β decay of 88Se. Physical Review C, 95 (2), 024321. doi:10.1103/PhysRevC.95.024321
Published inPhysical Review C
© 2017 American Physical Society. Published in this repository with the kind permission of the publisher.
Excited levels of 88Br populated in the β decay of 88Se have been studied by means of βγ and γ γ spectroscopy methods. Neutron-rich parent 88Se nuclei were produced with proton-induced fission of 238U using the Ion Guide Isotope Separator On-Line (IGISOL) method and separated from contaminants using a dipole magnet and the coupled JYFLTRAP Penning trap at the Accelerator Laboratory of the University of Jyvaskyl ¨ a. The level scheme ¨ of 88Br has been constructed and log f t values of levels were determined. The ground-state spin of 88Br is now firmly determined to be 1−. Low-energy levels in 88Br were interpreted as members of the πp3/2(νd5/2) 3, πp−1 3/2(νd5/2) 3, πf −1 5/2 (νd5/2) 3, and πg9/2νg7/2 multiplets. The shell-model calculations performed in this work reproduce well the experimental results.