Spectroscopy along the N = Z line between mass 70 and 84
Julkaistu sarjassa
JYU dissertationsTekijät
Päivämäärä
2023Tekijänoikeudet
© The Author & University of Jyväskylä
This thesis presents results from fusion-evaporation reaction experiments aimed to study
nuclei in the N = Z region. Specifically, new results obtained for the 70Br, 70Kr, 78Y and
84Mo nuclei are presented. The 84Mo experiment identified the excited states up to the 6+
state, and tentatively up to the 10+ state. In addition, other suitable reactions to populate
the excited states in 84Mo were investigated. Further measurements of higher-lying excited
states are required to determine the cause of the absent or delayed backbending in 84Mo.
The recoil-β tagging method was used to study the excited states in the 70Br, and 78Y
nuclei. Several new γ-ray transitions were observed from the decays of the excited states
in the 70Br nucleus. Moreover, the T = 1 band in 70Br was extended up to the Jπ = 10+
state. Multiple new excited states were also observed in the 78Y nucleus, including a new
Jπ = 6+ state in the T = 1 band. The recoil-double-β tagging method was used for the
first time to study the decays of the excited states in 70Kr. Two γ rays were observed,
which were assigned as the 2+ → 0+ and 4+ → 2+ transitions in 70Kr.
The experimental results on the 70Kr, 70Br, and 78Y nuclei can be used to investigate the
charge-symmetry and charge-independence characteristics of the strong nuclear interaction.
Keywords: Isospin, Isospin-symmetry breaking, Proton-neutron pairing, Coulomb energy
difference, Mirror energy difference, Triplet energy difference, Recoil-β
tagging, Recoil-double-β tagging
Julkaisija
Jyväskylän yliopistoISBN
978-951-39-9544-7ISSN Hae Julkaisufoorumista
2489-9003Metadata
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- JYU Dissertations [775]
- Väitöskirjat [3431]
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