1.
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Internal decay of the (10$^{-}$) intruder state in $^{184}$TI
/ Van Beveren, C (Leuven U.) ; Andreyev, A N (York U., England ; JAEA, Ibaraki) ; Barzakh, A E (St. Petersburg, INP) ; Cocolios, T E (CERN ; Manchester U.) ; Fedorov, D (St. Petersburg, INP) ; Fedosseev, V N (CERN) ; Ferrer, R (Leuven U.) ; Huyse, M (Leuven U.) ; Köster, U (Laue-Langevin Inst.) ; Lane, J (Paisley U.) et al.
Decay spectroscopy of $^{184}$TI has been performed at the CERN Isotope Separator On-Line (ISOLDE) facility. An excitation energy of 506.1(1) keV and a half-life of 47.1(7) ms of the intruder based (10−) state have been extracted. [...]
APS, 2015 - 8 p.
- Published in : Phys. Rev. C 92 (2015) 014325
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2.
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Shape Coexistence in the Neutron-Deficient Even-Even $^{182-188}$Hg Isotopes Studied via Coulomb Excitation
/ Bree, N (KU Leuven, Dept. Phys. Astron.) ; Wrzosek-Lipska, K (KU Leuven, Dept. Phys. Astron.) ; Petts, A (U. Liverpool (main)) ; Andreyev, A (KU Leuven, Dept. Phys. Astron.) ; Bastin, B (KU Leuven, Dept. Phys. Astron. ; GANIL) ; Bender, M (CENBG, Gradignan) ; Blazhev, A (Cologne U.) ; Bruyneel, B (Cologne U.) ; Butler, P A (U. Liverpool (main)) ; Butterworth, J et al.
Coulomb-excitation experiments to study electromagnetic properties of radioactive even-even Hg isotopes were performed with 2.85 MeV/nucleon mercury beams from REX-ISOLDE. Magnitudes and relative signs of the reduced E2 matrix elements that couple the ground state and low-lying excited states in Hg182-188 were extracted. [...]
2014 - 5 p.
- Published in : Phys. Rev. Lett. 112 (2014) 162701
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3.
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Laser spectroscopy of neutron-rich $^{207,208}$Hg isotopes: Illuminating the kink and odd-even staggering in charge radii across the $N=126$ shell closure
/ Day Goodacre, T. (Manchester U. ; CERN ; TRIUMF) ; Afanasjev, A.V. (Mississippi State U.) ; Barzakh, A.E. (St. Petersburg, INP) ; Marsh, B.A. (CERN) ; Sels, S. (CERN ; Leuven U.) ; Ring, P. (Munich, Tech. U.) ; Nakada, H. (Chiba U.) ; Andreyev, A.N. (York U., England ; JAERI, Tokai) ; Van Duppen, P. (Leuven U.) ; Althubiti, N.A. (Manchester U. ; Al Jouf U.) et al.
The mean-square charge radii of $^{207,208}$Hg ($Z=80, N=127,128$) have been studied for the first time and those of $^{202,203,206}$Hg ($N=122,123,126$) remeasured by the application of in-source resonance-ionization laser spectroscopy at ISOLDE (CERN). The characteristic \textit{kink} in the charge radii at the $N=126$ neutron shell closure has been revealed, providing the first information on its behavior below the $Z=82$ proton shell closure. [...]
arXiv:2012.13802.-
2021-01-23 - 7 p.
- Published in : Phys. Rev. Lett. 126 (2021) 032502
Fulltext: PDF; Fulltext from Publisher: PDF; Fulltext from publisher: PDF;
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4.
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Shapes and collectivity in neutron deficient even-mass 188–198Pb isotopes
/ Pakarinen, J (Jyvaskyla U. ; CERN ; Helsinki Inst. of Phys.) ; Grahn, T (Jyvaskyla U. ; CERN) ; Algora, A (Valencia U., IFIC) ; Bree, N (KU Leuven, Dept. Phys. Astron.) ; Cocolios, T E (CERN) ; Diriken, J (KU Leuven, Dept. Phys. Astron.) ; Fernier, P (CERN) ; Gaffney, L P (Liverpool U. ; KU Leuven, Dept. Phys. Astron.) ; Hadyńska-Klȩk, K (Warsaw U., Heavy Ion Lab) ; Herzáň, A (Jyvaskyla U.) et al.
The neutron deficient $^{188–198}$Pb isotopes have been studied in a Coulomb excitation measurement employing the Miniball spectrometer and radioactive beams from REX-ISOLDE, CERN. These isotopes are of particular importance as they lie in a transitional region, where the intruding structures, associated with different deformed shapes, come down in energy close to the spherical ground state. [...]
2015 - 5 p.
- Published in : JPS Conf. Proc. 6 (2015) 020011
In : 2nd Conference on Advances in Radioactive Isotope Science, Tokyo, Japan, 1 - 6 Jun 2014, pp.020011
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5.
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Electromagnetic properties of low-lying states in neutron-deficient Hg isotopes: Coulomb excitation of $^{182}$Hg, $^{184}$Hg, $^{186}$Hg and $^{188}$Hg
/ Wrzosek-Lipska, K (Warsaw U., Heavy Ion Lab ; Leuven U.) ; Rezynkina, K (Leuven U. ; U. Strasbourg) ; Bree, N (Leuven U.) ; Zielińska, M (Warsaw U., Heavy Ion Lab ; IRFU, Saclay) ; Gaffney, L P (Liverpool U. ; Leuven U. ; CERN ; West Scotland U.) ; Petts, A (Liverpool U.) ; Andreyev, A (Leuven U. ; York U., England) ; Bastin, B (Leuven U. ; GANIL) ; Bender, M (Lyon, IPN) ; Blazhev, A (Cologne U.) et al.
The neutron-deficient mercury isotopes serve as a classical example of shape coexistence, whereby at low energy near-degenerate nuclear states characterized by different shapes appear. The electromagnetic structure of even-mass $^{182-188}$ Hg isotopes was studied using safe-energy Coulomb excitation of neutron-deficient mercury beams delivered by the REX-ISOLDE facility at CERN. [...]
2019 - 23 p.
- Published in : Eur. Phys. J. A 55 (2019) 130
Fulltext (Open Access version from publisher): PDF;
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6.
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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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7.
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Charge radii, moments, and masses of mercury isotopes across the $N=126$ shell closure
/ Goodacre, T. Day (Manchester U. ; TRIUMF ; CERN) ; Afanasjev, A.V. (Mississippi State U.) ; Barzakh, A.E. (St. Petersburg, INP) ; Nies, L. (CERN ; Greifswald U.) ; Marsh, B.A. (CERN) ; Sels, S. (CERN ; Leuven U.) ; Perera, U.C. (Mississippi State U.) ; Ring, P. (Munich, Tech. U.) ; Wienholtz, F. (CERN ; Greifswald U.) ; Andreyev, A.N. (York U., England ; JAERI, Tokai) et al.
Combining laser spectroscopy in a Versatile Arc Discharge and Laser Ion Source, with Penning-trap mass spectrometry at the CERN-ISOLDE facility, this work reports on mean-square charge radii of neutron-rich mercury isotopes across the $N = 126$ shell closure, the electromagnetic moments of $^{207}$Hg and more precise mass values of $^{206-208}$Hg. The odd-even staggering (OES) of the mean square charge radii and the kink at $N = 126$ are analyzed within the framework of covariant density functional theory (CDFT), with comparisons between different functionals to investigate the dependence of the results on the underlying single-particle structure. [...]
arXiv:2111.10468.-
2021-11-30 - 20 p.
- Published in : Phys. Rev. C 104 (2021) 054322
Fulltext: PDF;
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8.
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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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9.
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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
Fulltext: PDF;
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10.
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Shape coexistence studied in ${}^{\mathrm{182,184}}$Hg via the β decay of ${}^{\mathrm{182,184}}$Tl
/ Rapisarda, E (Leuven U. ; PSI, Villigen) ; Andreyev, A N (York U., England) ; Antalic, S (Comenius U.) ; Barzakh, A (St. Petersburg, INP) ; Cocolios, T E (Leuven U.) ; Darby, I G (Leuven U.) ; Groote, R De (Leuven U.) ; De Witte, H (Leuven U.) ; Diriken, J (Leuven U.) ; Elseviers, J (Leuven U.) et al.
The ${\beta }^{+}$/EC decay of ${}^{\mathrm{182,184}}$Tl to excited states in the daughter nuclei ${}^{\mathrm{182,184}}$Hg has been investigated at the CERN on-line isotope mass separator facility. In both Tl nuclei two β-decaying states were observed. [...]
2017 - 17 p.
- Published in : J. Phys. G 44 (2017) 074001
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