%0 Journal Article %1 PhysRevC.107.014324 %A Clément, E. %A Lemasson, A. %A Rejmund, M. %A Jacquot, B. %A Ralet, D. %A Michelagnoli, C. %A Barrientos, D. %A Bednarczyk, P. %A Benzoni, G. %A Boston, A. J. %A Bracco, A. %A Cederwall, B. %A Ciemala, M. %A Collado, J. %A Crespi, F. %A Domingo-Pardo, C. %A Dudouet, J. %A Eberth, H. J. %A de France, G. %A Gadea, A. %A Gonzalez, V. %A Gottardo, A. %A Harkness, L. %A Hess, H. %A Jungclaus, A. %A Ka\css\fika\css\fi, A. %A Korten, W. %A Lenzi, S. M. %A Leoni, S. %A Ljungvall, J. %A Menegazzo, R. %A Mengoni, D. %A Million, B. %A Napoli, D. R. %A Nyberg, J. %A Podolyak, Zs. %A Pullia, A. %A Quintana Arnés, B. %A Recchia, F. %A Redon, N. %A Reiter, P. %A D.Salsac, M. %A Sanchis, E. %A \cSS\fienyigg\fiit, M. %A Siciliano, M. %A Sohler, D. %A Stezowski, O. %A Theisen, C. %A Valiente Dobón, J. J. %D 2023 %I American Physical Society %J Phys. Rev. C %K myown reiter %N 1 %P 014324 %R 10.1103/PhysRevC.107.014324 %T Spectroscopic quadrupole moments in 124Xe %U https://link.aps.org/doi/10.1103/PhysRevC.107.014324 %V 107 %X Background: The Xe isotopic chain with four valence protons above the $Z=50$ shell closure is an ideal laboratory for the study of the evolution of nuclear deformation. At the $N=82$ shell closure, $^136Xe$ presents all characteristics of a doubly closed shell nucleus with a spherical shape. In the very neutron-deficient isotopes close to $N=50$, the $\alpha$-decay chain of Xe was investigated to probe the radioactive decay properties near the drip-line and the magicity of $^100Sn$. Additionally, the Xe isotopes present higher order symmetries in the nuclear deformation such as the octupole degree of freedom near $N=60$ and $N=90$ or O(6) symmetry in stable isotopes.Purpose: The relevance of the O(6) symmetry has been investigated by measuring the spectroscopic quadrupole moment of the first excited states in $^124Xe$. In the O(6) symmetry limit, the spectroscopic quadrupole moment of collective states is expected to be null.Method: A stable $^124Xe$ beam with energies of $4.03A$ MeV and $4.11A$ MeV was used to bombard a $^natW$ target at the GANIL facility. Excited states were populated via the safe Coulomb excitation reaction. The collision of the heavy ions with a large $Z$ at low energy make this reaction sensitive to the diagonal $E2$ matrix element of the excited states. The recoils were detected in the $VAMOS++$ magnetic spectrometer and the $\gamma$ rays in the AGATA tracking array. The least squares fitting code gosia was used for the analysis to extract both $E2$ and $M1$ transitional and $E2$ diagonal matrix elements.Results: The rotational ground state band was populated up to the $8_1^+$ state as well as the $2_2^+$ and $4_2^+$ states. Using high precision spectroscopic data to constrain the gosia fit, the spectroscopic quadrupole moments of the $2_1^+$, $4_1^+$, and $6_1^+$ states were determined for the first time.Conclusions: The spectroscopic quadrupole moments were found to be negative, large, and constant in the ground state band underlining the prolate axially deformed ground state band of $^124Xe$. The present experimental data confirm that the O(6) symmetry is substantially broken in $^124Xe$.

@article{PhysRevC.107.014324, abstract = {Background: The Xe isotopic chain with four valence protons above the $Z=50$ shell closure is an ideal laboratory for the study of the evolution of nuclear deformation. At the $N=82$ shell closure, $^{136}\mathrm{Xe}$ presents all characteristics of a doubly closed shell nucleus with a spherical shape. In the very neutron-deficient isotopes close to $N=50$, the $\ensuremath{\alpha}$-decay chain of Xe was investigated to probe the radioactive decay properties near the drip-line and the magicity of $^{100}\mathrm{Sn}$. Additionally, the Xe isotopes present higher order symmetries in the nuclear deformation such as the octupole degree of freedom near $N=60$ and $N=90$ or O(6) symmetry in stable isotopes.Purpose: The relevance of the O(6) symmetry has been investigated by measuring the spectroscopic quadrupole moment of the first excited states in $^{124}\mathrm{Xe}$. In the O(6) symmetry limit, the spectroscopic quadrupole moment of collective states is expected to be null.Method: A stable $^{124}\mathrm{Xe}$ beam with energies of $4.03A$ MeV and $4.11A$ MeV was used to bombard a ${}^{\mathrm{nat}}\mathrm{W}$ target at the GANIL facility. Excited states were populated via the safe Coulomb excitation reaction. The collision of the heavy ions with a large $Z$ at low energy make this reaction sensitive to the diagonal $E2$ matrix element of the excited states. The recoils were detected in the $\mathrm{VAMOS}++$ magnetic spectrometer and the $\ensuremath{\gamma}$ rays in the AGATA tracking array. The least squares fitting code gosia was used for the analysis to extract both $E2$ and $M1$ transitional and $E2$ diagonal matrix elements.Results: The rotational ground state band was populated up to the ${8}_{1}^{+}$ state as well as the ${2}_{2}^{+}$ and ${4}_{2}^{+}$ states. Using high precision spectroscopic data to constrain the gosia fit, the spectroscopic quadrupole moments of the ${2}_{1}^{+}$, ${4}_{1}^{+}$, and ${6}_{1}^{+}$ states were determined for the first time.Conclusions: The spectroscopic quadrupole moments were found to be negative, large, and constant in the ground state band underlining the prolate axially deformed ground state band of $^{124}\mathrm{Xe}$. The present experimental data confirm that the O(6) symmetry is substantially broken in $^{124}\mathrm{Xe}$.}, added-at = {2024-02-06T11:30:10.000+0100}, author = {Cl\'ement, E. and Lemasson, A. and Rejmund, M. and Jacquot, B. and Ralet, D. and Michelagnoli, C. and Barrientos, D. and Bednarczyk, P. and Benzoni, G. and Boston, A. J. and Bracco, A. and Cederwall, B. and Ciemala, M. and Collado, J. and Crespi, F. and Domingo-Pardo, C. and Dudouet, J. and Eberth, H. J. and de France, G. and Gadea, A. and Gonzalez, V. and Gottardo, A. and Harkness, L. and Hess, H. and Jungclaus, A. and Ka\ifmmode \mbox{\c{s}}\else \c{s}\fi{}ka\ifmmode \mbox{\c{s}}\else \c{s}\fi{}, A. and Korten, W. and Lenzi, S. M. and Leoni, S. and Ljungvall, J. and Menegazzo, R. and Mengoni, D. and Million, B. and Napoli, D. R. and Nyberg, J. and Podolyak, Zs. and Pullia, A. and Quintana Arn\'es, B. and Recchia, F. and Redon, N. and Reiter, P. and D.Salsac, M. and Sanchis, E. and \ifmmode \mbox{\c{S}}\else \c{S}\fi{}enyi\ifmmode \breve{g}\else \u{g}\fi{}it, M. and Siciliano, M. and Sohler, D. and Stezowski, O. and Theisen, C. and Valiente Dob\'on, J. J.}, biburl = {https://www.bibsonomy.org/bibtex/2f722f552d52a1fa6bb4d0163794ed820/ikpcologne}, doi = {10.1103/PhysRevC.107.014324}, interhash = {64b6c798167c91d2806ce7d2397700b1}, intrahash = {f722f552d52a1fa6bb4d0163794ed820}, journal = {Phys. Rev. C}, keywords = {myown reiter}, month = jan, number = 1, numpages = {8}, pages = 014324, publisher = {American Physical Society}, timestamp = {2024-02-06T11:30:30.000+0100}, title = {Spectroscopic quadrupole moments in 124Xe}, url = {https://link.aps.org/doi/10.1103/PhysRevC.107.014324}, volume = 107, year = 2023 }