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In-beam γ -ray and electron spectroscopy of $^{249,251}$Md
/ Briselet, R. (IRFU, Saclay) ; Theisen, Ch. (IRFU, Saclay) ; Sulignano, B. (IRFU, Saclay) ; Airiau, M. (IRFU, Saclay) ; Auranen, K. (Jyvaskyla U.) ; Cox, D.M. (Jyvaskyla U. ; Liverpool U.) ; Déchery, F. (IRFU, Saclay ; Strasbourg, IPHC) ; Drouart, A. (IRFU, Saclay) ; Favier, Z. (IRFU, Saclay) ; Gall, B. (Strasbourg, IPHC) et al.
The odd-$Z$ $^{251}$Md nucleus was studied using combined $\gamma$-ray and conversion-electron in-beam spectroscopy. Besides the previously observed rotational band based on the $[521]1/2^-$ configuration, another rotational structure has been identified using $\gamma$-$\gamma$ coincidences. [...]
arXiv:2001.10235.-
2020-07-09 - 16 p.
- Published in : Phys. Rev. C 102 (2020) 014307
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First observation of high-K isomeric states in $^{249}$Md and $^{251}$Md
/ Goigoux, T. (IRFU, Saclay) ; Theisen, Ch. (IRFU, Saclay) ; Sulignano, B. (IRFU, Saclay) ; Airiau, M. (IRFU, Saclay) ; Auranen, K. (Jyvaskyla U.) ; Badran, H. (Jyvaskyla U. ; STUK, Helsinki) ; Briselet, R. (IRFU, Saclay) ; Calverley, T. (Jyvaskyla U. ; Liverpool U.) ; Cox, D. (Jyvaskyla U. ; Liverpool U. ; Lund U.) ; Déchery, F. (IRFU, Saclay) et al.
Decay spectroscopy of the odd-proton nuclei $^{249}$Md and $^{251}$Md has been performed. High-$K$ isomeric states were identified for the first time in these two nuclei through the measurement of their electromagnetic decay. [...]
arXiv:2107.00517.-
2021-12-01 - 14 p.
- Published in : Eur. Phys. J. A 57 (2021) 321
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Collectivity in the light radon nuclei measured directly via Coulomb excitation
/ Gaffney, L.P. (Leuven U. ; Liverpool U.) ; Robinson, A.P. (York U., England ; Manchester U.) ; Jenkins, D.G. (York U., England) ; Andreyev, A.N. (Leuven U. ; York U., England ; JAEA, Ibaraki) ; Bender, M. (CENBG, Gradignan) ; Blazhev, A. (Cologne U.) ; Bree, N. (Leuven U.) ; Bruyneel, B. (Cologne U.) ; Butler, P.A. (Liverpool U.) ; Cocolios, T.E. (CERN ; Manchester U.) et al.
Background: Shape coexistence in heavy nuclei poses a strong challenge to state-of-the-art nuclear models, where several competing shape minima are found close to the ground state. A classic region for investigating this phenomenon is in the region around $Z=82$ and the neutron mid-shell at $N=104$. [...]
arXiv:1503.03245.-
2015-06-22 - 11 p.
- Published in : Phys. Rev. C 91 (2015) 064313
External link: Preprint
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Evidence against the wobbling nature of low-spin bands in $^{135}$Pr
/ Lv, B.F. (Lanzhou, Inst. Modern Phys. ; Beijing, GUCAS) ; Petrache, C.M. (IJCLab, Orsay) ; Lawrie, E.A. (iThemba LABS ; Western Cape U.) ; Guo, S. (Lanzhou, Inst. Modern Phys. ; Beijing, GUCAS) ; Astier, A. (IJCLab, Orsay) ; Dupont, E. (IJCLab, Orsay) ; Zheng, K.K. (Lanzhou, Inst. Modern Phys. ; Beijing, GUCAS ; IJCLab, Orsay) ; Ong, H.J. (Lanzhou, Inst. Modern Phys. ; Beijing, GUCAS) ; Wang, J.G. (Lanzhou, Inst. Modern Phys. ; Beijing, GUCAS) ; Zhou, X.H. (Lanzhou, Inst. Modern Phys. ; Beijing, GUCAS) et al.
The electromagnetic character of the $\Delta I=1$ transitions connecting the one- to zero-phonon and the two- to one-phonon wobbling bands should be dominated by an $E2$ component, due to the collective motion of the entire nuclear charge. In the present work it is shown, based on combined angular correlation and linear polarization measurements, that the mixing ratios of all analyzed connecting transitions between low-lying bands in $^{135}$Pr interpreted as zero-, one-, and two-phonon wobbling bands, have absolute values smaller than one. [...]
arXiv:2106.04879.-
2022-01-10 - 6 p.
- Published in : Phys. Lett. B 824 (2022) 136840
Fulltext: 1-s2.0-S0370269321007802-main - PDF; 2106.04879 - PDF;
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5.
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Long-sought isomer turns out to be the ground state of $^{76}$Cu
/ Canete, L. (Jyvaskyla U. ; Surrey U.) ; Giraud, S. (GANIL ; Michigan State U., East Lansing (main)) ; Kankainen, A. (Jyvaskyla U.) ; Bastin, B. (GANIL) ; Nowacki, F. (Strasbourg, IPHC) ; Ascher, P. (LP2I, Bordeaux) ; Eronen, T. (Jyvaskyla U.) ; Alcindor, V. Girard (GANIL ; IJCLab, Orsay) ; Jokinen, A. (Jyvaskyla U.) ; Khanam, A. (Jyvaskyla U. ; Surrey U. ; Helsinki U.) et al.
Isomers close to the doubly magic nucleus $^{78}$Ni ($Z=28$, $N=50$) provide essential information on the shell evolution and shape coexistence far from stability. The existence of a long-lived isomeric state in $^{76}$Cu has been debated for a long time. [...]
arXiv:2401.14018.-
2024-04-22 - 6 p.
- Published in : Phys. Lett. B 853 (2024) 138663
Fulltext: 2401.14018 - PDF; Publication - PDF;
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6.
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Exploring the mass surface near the rare-earth abundance peak via precision mass measurements at JYFLTRAP
/ Vilen, M. (Jyvaskyla U.) ; Kelly, J.M. (Jyvaskyla U. ; CERN) ; Kankainen, A. (Jyvaskyla U.) ; Brodeur, M. (U. Notre Dame (main)) ; Aprahamian, A. (U. Notre Dame (main)) ; Canete, L. (Jyvaskyla U.) ; de Groote, R. (Jyvaskyla U.) ; de Roubin, A. (Jyvaskyla U.) ; Eronen, T. (Jyvaskyla U.) ; Jokinen, A. (Jyvaskyla U.) et al.
The JYFLTRAP double Penning trap at the Ion Guide Isotope Separator On-Line (IGISOL) facility has been used to measure the atomic masses of 13 neutron-rich rare-earth isotopes. Eight of the nuclides, $^{161}$Pm, $^{163}$Sm, $^{164,165}$Eu, $^{167}$Gd, and $^{165,167,168}$Tb, were measured for the first time. [...]
arXiv:1908.05043.-
2020-03-24 - 16 p.
- Published in : Phys. Rev. C 101 (2020) 034312
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7.
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Deformation and mixing of coexisting shapes in neutron-deficient polonium isotopes
/ Kesteloot, N (KU Leuven, Dept. Phys. Astron. ; SCK-CEN, Mol) ; Bastin, B (KU Leuven, Dept. Phys. Astron. ; GANIL) ; Gaffney, L P (KU Leuven, Dept. Phys. Astron. ; Liverpool U.) ; Wrzosek-Lipska, K (KU Leuven, Dept. Phys. Astron. ; Warsaw U., Heavy Ion Lab) ; Auranen, K (Jyvaskyla U. ; Helsinki Inst. of Phys.) ; Bauer, C (Darmstadt, Tech. Hochsch.) ; Bender, M (CENBG, Gradignan) ; Bildstein, V (Munich, Tech. U.) ; Blazhev, A (Cologne U.) ; Bönig, S (Darmstadt, Tech. Hochsch.) et al.
Coulomb-excitation experiments are performed with postaccelerated beams of neutron-deficient Po196,198,200,202 isotopes at the REX-ISOLDE facility. A set of matrix elements, coupling the low-lying states in these isotopes, is extracted. [...]
2015 - 17 p.
- Published in : Phys. Rev. C 92 (2015) 054301
APS Open Access article: PDF;
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8.
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Exploring the evolution of the N = 126 magic number with the masses of neutron-rich gold isotopes
/ Manea, Vladimir (Universite Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France) ; Blaum, Klaus (Max-Planck-Institut fur Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany) ; Lange, Daniel (Max-Planck-Institut fur Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany) ; Litvinov, Yuri (GSI Helmholtzzentrum fur Schwerionenforschung GmbH, Planckstraße 1, 64291 Darmstadt, Germany) ; Lunney, David (Universite Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France) ; Mougeot, Maxime (University of Jyvaskyla, P.O. Box 35, FI-40014 University of Jyvaskyla, Finland) ; Naimi, Sarah (Universite Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France) ; Nies, Lukas (CERN, 1211 Geneva 23, Switzerland / Universitat Greifswald, Institut fur Physik, 17487 Greifswald, Germany) ; Schweiger, Christoph (Max-Planck-Institut fur Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany) ; Schweikhard, Lutz (Universitat Greifswald, Institut fur Physik, 17487 Greifswald, Germany) et al.
CERN-INTC-2023-005 ; INTC-P-650.
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2023.
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High-Precision $Q$-Value Measurement Confirms the Potential of $^{135}$Cs for Absolute Antineutrino Mass Scale Determination
/ de Roubin, A. (Jyvaskyla U.) ; Kostensalo, J. (Jyvaskyla U.) ; Eronen, T. (Jyvaskyla U.) ; Canete, L. (Jyvaskyla U. ; U. Surrey (main)) ; de Groote, R.P. (Jyvaskyla U.) ; Jokinen, A. (Jyvaskyla U.) ; Kankainen, A. (Jyvaskyla U.) ; Nesterenko, D.A. (Jyvaskyla U.) ; Moore, I.D. (Jyvaskyla U.) ; Rinta-Antila, S. (Jyvaskyla U.) et al.
The ground-state-to-ground-state $\beta$-decay $Q$-value of $^{135}\textrm{Cs}(7/2^+)\to\,^{135}\textrm{Ba}(3/2^+)$ was directly measured for the first time utilizing the Phase-Imaging Ion-Cyclotron Resonance (PI-ICR) technique at the JYFLTRAP Penning-trap setup. It is the first direct determination of this $Q$-value and its value of 268.66(30)\,keV is a factor of three more precise than the currently adopted $Q$-value in the Atomic Mass Evaluation 2016. [...]
arXiv:2002.08282.-
2020-06-06 - 5 p.
- Published in : Phys. Rev. Lett. 124 (2020) 222503
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10.
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Further evidence for shape coexistence in $^{79}$Zn$^{m}$ near doubly-magic $^{78}$Ni
/ Nies, L. (CERN ; Greifswald U.) ; Canete, L. (Jyvaskyla U. ; Surrey U.) ; Dao, D.D. (Strasbourg, IPHC) ; Giraud, S. (GANIL) ; Kankainen, A. (Jyvaskyla U.) ; Lunney, D. (IJCLab, Orsay) ; Nowacki, F. (Strasbourg, IPHC) ; Bastin, B. (GANIL) ; Stryjczyk, M. (Jyvaskyla U.) ; Ascher, P. (LP2I, Bordeaux) et al.
Isomers close to doubly-magic $^{78}_{28}$Ni$_{50}$ provide essential information on the shell evolution and shape coexistence near the ${Z=28}$ and ${N=50}$ double shell closure. We report the excitation energy measurement of the $1/2^{+}$ isomer in $^{79}_{30}$Zn$_{49}$ through independent high-precision mass measurements with the JYFLTRAP double Penning trap and with the ISOLTRAP Multi-Reflection Time-of-Flight Mass Spectrometer. [...]
arXiv:2310.16915.-
2023-11-30 - 10 p.
- Published in : Phys. Rev. Lett.
- Published in : Phys. Rev. Lett.
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