6533b7d4fe1ef96bd1261d9e

RESEARCH PRODUCT

Penning-trap-assisted study of excitations in Br88 populated in β decay of Se88

Jukka KoponenM. CzerwińskiJ. KurpetaVasily SimutkinIain MooreAnu KankainenL. CaneteVeli KolhinenKamila SiejaKamila SiejaT. Rząca-urbanC. R. NobsAnnika VossHeikki PenttiläTommi EronenAri JokinenW. UrbanJani HakalaJ. WiśniewskiA. PłochockiJuuso ReinikainenIlkka PohjalainenI. M. MurraySami Rinta-antila

subject

Physics010308 nuclear & particles physicsExcited stateSpectroscopy methods0103 physical sciencesAtomic physics010306 general physicsPenning trapSpin (physics)01 natural sciences

description

Excited levels of $^{88}\mathrm{Br}$ populated in the $\ensuremath{\beta}$ decay of $^{88}\mathrm{Se}$ have been studied by means of $\ensuremath{\beta}\ensuremath{\gamma}$ and $\ensuremath{\gamma}\ensuremath{\gamma}$ spectroscopy methods. Neutron-rich parent $^{88}\mathrm{Se}$ nuclei were produced with proton-induced fission of $^{238}\mathrm{U}$ 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 Jyv\"askyl\"a. The level scheme of $^{88}\mathrm{Br}$ has been constructed and $logft$ values of levels were determined. The ground-state spin of $^{88}\mathrm{Br}$ is now firmly determined to be ${1}^{\ensuremath{-}}$. Low-energy levels in $^{88}\mathrm{Br}$ were interpreted as members of the $\ensuremath{\pi}{p}_{3/2}{(\ensuremath{\nu}{d}_{5/2})}^{3}, \ensuremath{\pi}{p}_{3/2}^{\ensuremath{-}1}{(\ensuremath{\nu}{d}_{5/2})}^{3}, \ensuremath{\pi}{f}_{5/2}^{\ensuremath{-}1}{(\ensuremath{\nu}{d}_{5/2})}^{3}$, and $\ensuremath{\pi}{g}_{9/2}\ensuremath{\nu}{g}_{7/2}$ multiplets. The shell-model calculations performed in this work reproduce well the experimental results.

https://doi.org/10.1103/physrevc.95.024321