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Gamma ray spectroscopic analysis around the N=104 mid-shell for 176,177Yb and 182W nuclei

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Published: Feb 24, 2026
DOI: https://doi.org/10.12681/hnpsanp.8999
Keywords:
nuclear structure gamma spectroscopy 182W 177Yb 176Yb
A. Violanti
Department of Physics, National and Kapodistrian University of Athens, Zografou Campus, GR-15784, Athens, Greece
K. Topalis
Department of Physics, National and Kapodistrian University of Athens, Zografou Campus, GR-15784, Athens, Greece
https://orcid.org/0009-0007-0485-3739
M. Efstathiou
Department of Physics, National and Kapodistrian University of Athens, Zografou Campus, GR-15784, Athens, Greece
https://orcid.org/0009-0006-1292-4974
P. Koseoglou
Department of Physics, National and Kapodistrian University of Athens, Zografou Campus, GR-15784, Athens, Greece
https://orcid.org/0000-0003-4520-4448
T.J. Mertzimekis
Department of Physics, National and Kapodistrian University of Athens, Zografou Campus, GR-15784, Athens, Greece
https://orcid.org/0000-0001-9191-7903
P. Vasileiou
Department of Physics, National and Kapodistrian University of Athens, Zografou Campus, GR-15784, Athens, Greece
https://orcid.org/0000-0003-1446-8619
A. Zyriliou
Department of Physics, National and Kapodistrian University of Athens, Zografou Campus, GR-15784, Athens, Greece
https://orcid.org/0000-0003-2498-6014
H. Mayr
IKP, TU Darmstadt
https://orcid.org/0000-0001-7368-5176
C.M. Nickel
IKP, TU Darmstadt
https://orcid.org/0009-0004-9381-2776
N. Pietralla
IKP, TU Darmstadt
https://orcid.org/0000-0002-4797-3032
T. Stetz
IKP, TU Darmstadt
V. Werner
IKP, TU Darmstadt
https://orcid.org/0000-0003-4001-0150
Α. Chalil
Université Lyon, Université Claude Bernard Lyon 1, CNRS/IN2P3, IP2I Lyon, F-69622 Villeurbanne, France
R. Lica
Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering, Str. Reactorului Nr 30, 077125, Magurele, Romania
https://orcid.org/0000-0001-7066-9787
Ν. Mărginean
Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering, Str. Reactorului Nr 30, 077125, Magurele, Romania
R. Borcea
Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering, Str. Reactorului Nr 30, 077125, Magurele, Romania
https://orcid.org/0009-0009-4553-7462
S. Calinescu
Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering, Str. Reactorului Nr 30, 077125, Magurele, Romania
C. Costache
Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering, Str. Reactorului Nr 30, 077125, Magurele, Romania
https://orcid.org/0000-0002-8824-1778
I. Dinescu
Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering, Str. Reactorului Nr 30, 077125, Magurele, Romania
https://orcid.org/0009-0008-7889-4389
N. Florea
Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering, Str. Reactorului Nr 30, 077125, Magurele, Romania
https://orcid.org/0000-0002-5253-099X
R. E. Mihai
Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering, Str. Reactorului Nr 30, 077125, Magurele, Romania
https://orcid.org/0000-0002-2809-7946
C. Neacsu
Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering, Str. Reactorului Nr 30, 077125, Magurele, Romania
C. Sotty
Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering, Str. Reactorului Nr 30, 077125, Magurele, Romania
L. Stan
Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering, Str. Reactorului Nr 30, 077125, Magurele, Romania
https://orcid.org/0000-0002-3509-1606
S. Toma
Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering, Str. Reactorului Nr 30, 077125, Magurele, Romania
https://orcid.org/0000-0002-4486-8579
A. Turturica
Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering, Str. Reactorului Nr 30, 077125, Magurele, Romania
G. Turturica
Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering, Str. Reactorului Nr 30, 077125, Magurele, Romania
https://orcid.org/0000-0002-8027-2385
S. Ujeniuc
Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering, Str. Reactorului Nr 30, 077125, Magurele, Romania
D. Bonatsos
INPP, NCSR Demokritos, GR-15310, Aghia Paraskevi, Greece
https://orcid.org/0000-0003-1728-0910
Abstract

Even-even Yb and W isotopes around the N=104 mid-shell region are known to present deformation. The ground-band states of these nuclei are well described by the SU(3) symmetry, indicating a rigid-rotor character. Excited states of even-even isotopes in the region, namely 176Yb and 182W, were populated through Coulomb excitation and fusion-evaporation reactions, in an experiment performed at IFIN-HH in Măgurele, Romania. The gamma-spectroscopy of these nuclei will be presented in this contribution. Additionally, gamma spectroscopy results for the even-odd 177Yb nucleus, populated by the 1n-transfer reaction mechanism, will be presented. Contradictory to the collective description of the ground-band excitations in 176Yb and 182W isotopes, the excited states of this nucleus can be described by single-particle excitations. The gamma-spectroscopy analysis of this data contributes to the evaluation of the available data in this mass region, while ongoing work is expected to provide further insights for the nuclear structure of these rare-earth isotopes.

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