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Measurements of binding energies and electromagnetic moments of silver isotopes – A complementary benchmark of density functional theory
/ de Groote, R P (Jyvaskyla U. ; Leuven U.) ; Nesterenko, D A (Jyvaskyla U.) ; Kankainen, A (Jyvaskyla U.) ; Bissell, M L (Manchester U.) ; Beliuskina, O (Jyvaskyla U.) ; Bonnard, J (York U., England ; IP2I, Lyon) ; Campbell, P (Manchester U.) ; Canete, L (Jyvaskyla U.) ; Cheal, B (Liverpool U.) ; Delafosse, C (Jyvaskyla U.) et al.
We report on a set of high-precision measurements of nuclear binding and excitation energies, as well as nuclear spins, magnetic dipole and electric quadrupole moments of neutron-rich silver isotopes, 113−123Ag. The measurements were performed using the JYFLTRAP mass spectrometer and the collinear laser spectroscopy beamline at the Ion Guide Isotope Separator On-Line (IGISOL) facility. [...]
2023 - 6 p.
- Published in : Phys. Lett. B 848 (2024) 138352
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Electromagnetic properties of indium isotopes illuminate the doubly magic character of $^{100}$Sn
/ Karthein, J. (MIT) ; Ricketts, C.M. (Manchester U.) ; Garcia Ruiz, R.F. (MIT ; Manchester U. ; CERN) ; Billowes, J. (Manchester U.) ; Binnersley, C.L. (Manchester U.) ; Cocolios, T.E. (Leuven U.) ; Dobaczewski, J. (York U., England ; Warsaw U.) ; Farooq-Smith, G.J. (Leuven U.) ; Flanagan, K.T. (Manchester U.) ; Georgiev, G. (IJCLab, Orsay) et al.
Our understanding of nuclear properties in the vicinity of $^{100}$Sn, suggested to be the heaviest doubly magic nucleus with equal numbers of protons (Z=50) and neutrons (N=50), has been a long-standing challenge for experimental and theoretical nuclear physics. Contradictory experimental evidence exists on the role of nuclear collectivity in this region of the nuclear chart. [...]
arXiv:2310.15093.-
2024-09-30 - 20 p.
- Published in : Nature Phys. 20 (2024) 1719-1725
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3.
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Isomeric excitation energy for $^{99}$In$^{m}$ from mass spectrometry reveals constant trend next to doubly magic $^{100}$Sn
/ Nies, L. (CERN ; Greifswald U.) ; Atanasov, D. (CERN) ; Athanasakis-Kaklamanakis, M. (CERN ; Leuven U.) ; Au, M. (CERN ; Mainz U.) ; Blaum, K. (Heidelberg, Max Planck Inst.) ; Dobaczewski, J. (Warsaw U.) ; Hu, B.S. (TRIUMF) ; Holt, J.D. (TRIUMF ; McGill U.) ; Karthein, J. (MIT) ; Kulikov, I. (Darmstadt, GSI) et al.
The excitation energy of the 1/2$^-$ isomer in $^{99}$In at ${N=50}$ is measured to be 671(37) keV and the mass uncertainty of the 9/2$^+$ ground state is significantly reduced using the ISOLTRAP mass spectrometer at ISOLDE/CERN. The measurements exploit a major improvement in the resolution of the multi-reflection time-of-flight mass spectrometer. [...]
arXiv:2306.02033.-
2023-07-14 - 13 p.
- Published in : Phys. Rev. Lett. 131 (2023) 022502
Fulltext: 2306.02033 - PDF; Publication - PDF;
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Opportunities for Fundamental Physics Research with Radioactive Molecules
/ Arrowsmith-Kron, Gordon (Michigan State U.) ; Athanasakis-Kaklamanakis, Michail (CERN ; Leuven U.) ; Au, Mia (CERN ; Mainz U.) ; Ballof, Jochen (CERN ; Michigan State U.) ; Berger, Robert (Philipps U. Marburg) ; Borschevsky, Anastasia (U. Groningen, VSI) ; Breier, Alexander A. (Kassel U.) ; Buchinger, Fritz (McGill U.) ; Budker, Dmitry (Darmstadt, GSI ; UC, Berkeley) ; Caldwell, Luke (JILA, Boulder ; U. Colorado, Boulder ; Colorado U.) et al.
Molecules containing short-lived, radioactive nuclei are uniquely positioned to enable a wide range of scientific discoveries in the areas of fundamental symmetries, astrophysics, nuclear structure, and chemistry. Recent advances in the ability to create, cool, and control complex molecules down to the quantum level, along with recent and upcoming advances in radioactive species production at several facilities around the world, create a compelling opportunity to coordinate and combine these efforts to bring precision measurement and control to molecules containing extreme nuclei. [...]
arXiv:2302.02165.-
2024-07-12 - 119 p.
- Published in : Rep. Prog. Phys. 87 (2024) 084301
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Nuclear moments of indium isotopes reveal abrupt change at magic number 82
/ Vernon, A R (Manchester U. ; MIT ; Leuven U.) ; Garcia Ruiz, R F (MIT ; CERN) ; Miyagi, T (TRIUMF) ; Binnersley, C L (Manchester U.) ; Billowes, J (Manchester U.) ; Bissell, M L (Manchester U.) ; Bonnard, J (York U., England) ; Cocolios, T E (Leuven U.) ; Dobaczewski, J (York U., England) ; Farooq-Smith, G J (Leuven U.) et al.
In spite of the high-density and strongly correlated nature of the atomic nucleus, experimental and theoretical evidence suggests that around particular ‘magic’ numbers of nucleons, nuclear properties are governed by a single unpaired nucleon$^{1,2}$. A microscopic understanding of the extent of this behaviour and its evolution in neutron-rich nuclei remains an open question in nuclear physics$^{3–5}$. [...]
2022 - 10 p.
- Published in : Nature
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Shape staggering of mid-shell mercury isotopes from in-source laser spectroscopy compared with Density Functional Theory and Monte Carlo Shell Model calculations
/ Sels, S. (KU Leuven, Dept. Phys. Astron.) ; Day Goodacre, T. (Manchester U. ; CERN) ; Marsh, B.A. (CERN) ; Pastore, A. (York U., England) ; Ryssens, W. (Lyon, IPN) ; Tsunoda, Y. (Tokyo U.) ; Althubiti, N. (Manchester U.) ; Andel, B. (Comenius U.) ; Andreyev, A.N. (York U., England ; JAEA, Ibaraki) ; Atanasov, D. (Heidelberg, Max Planck Inst.) et al.
Neutron-deficient $^{177-185}$Hg isotopes were studied using in-source laser resonance-ionization spectroscopy at the CERN-ISOLDE radioactive ion-beam facility, in an experiment combining different detection methods tailored to the studied isotopes. These include either alpha-decay tagging or Multi-reflection Time-of-Flight gating to identify the isotopes of interest. [...]
arXiv:1902.11211.-
2019-04-13 - 17 p.
- Published in : Phys. Rev. C 99 (2019) 044306
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Characterization of the shape-staggering effect in mercury nuclei
/ Marsh, B A (CERN) ; Day Goodacre, T (CERN ; Manchester U.) ; Sels, S (Leuven U.) ; Tsunoda, Y (Tokyo U., CNS) ; Andel, B (Comenius U.) ; Andreyev, A N (York U., England ; JAEA, Ibaraki) ; Althubiti, N A (Manchester U.) ; Atanasov, D (Heidelberg, Max Planck Inst.) ; Barzakh, A E (St. Petersburg, INP) ; Billowes, J (Manchester U.) et al.
In rare cases, the removal of a single proton (Z) or neutron (N) from an atomic nucleus leads to a dramatic shape change. These instances are crucial for understanding the components of the nuclear interactions that drive deformation. [...]
2018 - 6 p.
- Published in : Nature Phys. 14 (2018) 1163-1167
Fulltext: PDF; External link: INTERACTIONS
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