A1 Journal article (refereed)
Normal and intruder configurations in 34Si populated in the β- decay of 34Mg and 34Al (2019)

IDS Collaboration (2019). Normal and intruder configurations in 34Si populated in the β- decay of 34Mg and 34Al. Physical Review C, 100 (3), 034306. DOI: 10.1103/PhysRevC.100.034306

JYU authors or editors

Publication details

All authors or editors: IDS Collaboration

Journal or series: Physical Review C

ISSN: 2469-9985

eISSN: 2469-9993

Publication year: 2019

Volume: 100

Issue number: 3

Article number: 034306

Publisher: American Physical Society

Publication country: United States

Publication language: English

DOI: http://doi.org/10.1103/PhysRevC.100.034306

Open Access: Open access publication published in a hybrid channel

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/65706

Web address of parallel published publication (pre-print): https://arxiv.org/abs/1908.11626


The structure of 34Si was studied through γ spectroscopy separately in the β− decays of 34Mg and 34Al at the ISOLDE facility of CERN. Different configurations in 34Si were populated independently from the two recently identified β-decaying states in 34Al having spin-parity assignments Jπ=4− dominated by the normal configuration π(d5/2)−1⊗ν(f7/2) and Jπ=1+ by the intruder configuration π(d5/2)−1⊗ν(d3/2)−1(f7/2)2. The paper reports on spectroscopic properties of 34Si such as an extended level scheme, spin and parity assignments based on log(ft) values and γ-ray branching ratios, absolute β feeding intensities, and neutron emission probabilities. A total of 11 newly identified levels and 26 transitions were added to the previously known level scheme of 34Si. Large scale shell-model calculations using the SDPF-U-MIX interaction, able to treat higher order intruder configurations, are compared with the new results and conclusions are drawn concerning the predictive power of SDPF-U-MIX, the N=20 shell gap, the level of mixing between normal and intruder configurations for the 0+1, 0+2, and 2+1 states, and the absence of triaxial deformation in 34Si.

Keywords: nuclear physics

Contributing organizations

Ministry reporting: Yes

Reporting Year: 2019

JUFO rating: 2

Last updated on 2020-09-07 at 11:49