1.
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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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2.
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Microscopic structure of coexisting $0^+$ states in $^{68}$Ni probed via two-neutron transfer
/ Flavigny, F (Orsay, IPN ; KU Leuven, Dept. Phys. Astron.) ; Elseviers, J (KU Leuven, Dept. Phys. Astron.) ; Andreyev, A N (York U., England ; JAEA, Ibaraki) ; Bauer, C (Darmstadt, Tech. Hochsch.) ; Bildstein, V (Guelph U.) ; Blazhev, A (Cologne U.) ; Brown, B A (Michigan State U., NSCL) ; De Witte, H (KU Leuven, Dept. Phys. Astron.) ; Diriken, J (KU Leuven, Dept. Phys. Astron. ; SCK-CEN, Mol) ; Fedosseev, V N (CERN) et al.
The structure of low-spin states originating from shape-coexisting configurations in $^{68}_{40}$Ni$_{28}$ was directly probed via the two-neutron transfer reaction $^{66}$Ni$(t,p)^{68}$Ni in inverse kinematics using a radioactive ion beam on a radioactive target. The direct feeding to the first excited 0$^+$ state was measured for center-of-mass angles 4°–16° and amounts to an integral of 4.2(16)% relative to the ground state. [...]
2019 - 6 p.
- Published in : Phys. Rev. C 99 (2019) 054332
Article from SCOAP3: PDF;
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3.
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Collectivity in ${}^{\mathrm{196,198}}$Pb isotopes probed in Coulomb-excitation experiments at REX-ISOLDE
/ Pakarinen, J (Jyvaskyla U. ; CERN) ; Grahn, T (Jyvaskyla U.) ; Gaffney, L P (KU Leuven, Dept. Phys. Astron. ; Liverpool U.) ; Algora, A (Valencia U., IFIC ; Debrecen, Inst. Nucl. Res.) ; Bauer, C (Darmstadt, Tech. Hochsch.) ; Blazhev, A (Cologne U.) ; Bree, N (KU Leuven, Dept. Phys. Astron.) ; Cocolios, T E (CERN) ; Witte, H De (KU Leuven, Dept. Phys. Astron.) ; Diriken, J (KU Leuven, Dept. Phys. Astron.) et al.
The neutron-deficient ${}^{\mathrm{196,198}}$Pb isotopes have been studied in Coulomb-excitation experiments employing the Miniball γ-ray spectrometer and radioactive ion beams from the REX-ISOLDE post-accelerator at CERN. The reduced transition probabilities of the first excited 2(+) states in (196)Pb and (198)Pb nuclei have been measured for the first time. [...]
2017 - 10 p.
- Published in : J. Phys. G 44 (2017) 064009
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4.
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Towards high-resolution laser ionization spectroscopy of the heaviest elements in supersonic gas jet expansion
/ Ferrer, R (KU Leuven, Dept. Phys. Astron.) ; Barzakh, A (St. Petersburg, INP) ; Bastin, B (GANIL) ; Beerwerth, R (Helmholtz Inst., Jena ; Jena U., TPI) ; Block, M (Darmstadt, GSI ; Helmholtz Inst., Mainz ; Mainz U., Inst. Kernchem.) ; Creemers, P (KU Leuven, Dept. Phys. Astron.) ; Grawe, H (Darmstadt, GSI) ; de Groote, R (KU Leuven, Dept. Phys. Astron.) ; Delahaye, P (GANIL) ; Fléchard, X (Caen U.) et al.
Resonant laser ionization and spectroscopy are widely used techniques at radioactive ion
beam facilities to produce pure beams of exotic nuclei and measure the shape, size, spin and
electromagnetic multipole moments of these nuclei. However, in such measurements it is
difficult to combine a high efficiency with a high spectral resolution. [...]
2017 - 9 p.
- Published in : Nature Commun. 8 (2017) 14520
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5.
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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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6.
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Developments towards in-gas-jet laser spectroscopy studies of actinium isotopes at LISOL
/ Raeder, S (KU Leuven, Dept. Phys. Astron.) ; Bastin, B (GANIL) ; Block, M (Helmholtz-Institut Mainz) ; Creemers, P (KU Leuven, Dept. Phys. Astron.) ; Delahaye, P (GANIL) ; Ferrer, R (KU Leuven, Dept. Phys. Astron.) ; Fléchard, X (Caen U.) ; Franchoo, S (Orsay, IPN) ; Ghys, L (KU Leuven, Dept. Phys. Astron.) ; Gaffney, L P (KU Leuven, Dept. Phys. Astron.) et al.
To study exotic nuclides at the borders of stability with laser ionization and spectroscopy techniques, highest efficiencies in combination with a high spectral resolution are required. These usually opposing requirements are reconciled by applying the in-gas-laser ionization and spectroscopy (IGLIS) technique in the supersonic gas jet produced by a de Laval nozzle installed at the exit of the stopping gas cell. [...]
2016 - 6 p.
- Published in : Nucl. Instrum. Methods Phys. Res., B 376 (2016) 382-387
In : 17th International Conference on Electromagnetic Isotope Separators and Related Topics, Grand Rapids, USA, 11 - 15 May 2015, pp.382-387
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7.
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Measurement of the first ionization potential of astatine by laser ionization spectroscopy
/ Rothe, S (CERN ; Mainz U.) ; Andreyev, A N (York U., England ; West Scotland U. ; SUPA, UK ; JAERI, Tokai) ; Antalic, S (Comenius U.) ; Borschevsky, A (Massey U.) ; Capponi, L (West Scotland U. ; SUPA, UK) ; Cocolios, T E (CERN) ; De Witte, H (KU Leuven, Dept. Phys. Astron.) ; Eliav, E (Tel Aviv U.) ; Fedorov, D V (PNPI, CSTD) ; Fedosseev, V N (CERN) et al.
he radioactive element astatine exists only in trace amounts in nature. Its properties can therefore only be explored by study of the minute quantities of artificially produced isotopes or by performing theoretical calculations. [...]
2013 - 6 p.
- Published in : Nature Commun. 4 (2013) 1835
Fulltext: PDF; Macmillan Open Access article: PDF; External link: fulltext from publisher
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8.
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Coulomb excitation of $^{29,30}$Na: Mapping the borders of the island of inversion
/ Seidlitz, M (Cologne U.) ; Reiter, P (Cologne U.) ; Altenkirch, R (Cologne U.) ; Bastin, B (KU Leuven, Dept. Phys. Astron.) ; Bauer, C (Darmstadt, Tech. Hochsch.) ; Blazhev, A (Cologne U.) ; Bree, N (KU Leuven, Dept. Phys. Astron.) ; Bruyneel, B (Cologne U.) ; Butler, P A (Liverpool U.) ; Cederkäll, J (Lund U.) et al.
Nuclear shell evolution in neutron-rich Na nuclei around N=20 was studied by determining reduced transition probabilities, i.e., B(E2) and B(M1) values, in order to map the border of the island of inversion. To this end Coulomb-excitation experiments, employing radioactive 29,30Na beams with a final beam energy of 2.85 MeV/nucleon, were performed at REX-ISOLDE, CERN. [...]
2014 - 10 p.
- Published in : Phys. Rev. C 89 (2014) 024309
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9.
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$^{97}_{37}$Rb$_{60}$: The Cornerstone of the Region of Deformation around $A\sim 100$
/ Sotty, C (CSNSM, Orsay ; Leuven U.) ; Zielińska, M (Warsaw U., Heavy Ion Lab ; IRFU, SPhN, Saclay) ; Georgiev, G (CSNSM, Orsay) ; Balabanski, D L (Bucharest, IFIN-HH) ; Stuchbery, A E (Australian Natl. U., Canberra (main)) ; Blazhev, A (Cologne U.) ; Bree, N (Leuven U.) ; Chevrier, R (CEA DAM) ; Das Gupta, S (U. Camerino, Dept. Phys. ; INFN, Perugia) ; Daugas, J M (CEA DAM) et al.
Excited states of the neutron-rich nuclei Rb97,99 were populated for the first time using the multistep Coulomb excitation of radioactive beams. Comparisons of the results with particle-rotor model calculations provide clear identification for the ground-state rotational band of Rb97 as being built on the πg9/2 [431] 3/2+ Nilsson-model configuration. [...]
2015 - 6 p.
- Published in : Phys. Rev. Lett.
- Published in : Phys. Rev. Lett.
APS Open Access article: PDF; Publisher’s Note: PDF;
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10.
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Coulomb excitation of neutron-rich Cd isotopes
/ Ilieva, S (Tech. U. Darmstadt, Inst. Nucl. Phys.) ; Thürauf, M (Tech. U. Darmstadt, Inst. Nucl. Phys.) ; Kröll, Th (Tech. U. Darmstadt, Inst. Nucl. Phys.) ; Krücken, R (Munich, Tech. U.) ; Behrens, T (Munich, Tech. U.) ; Bildstein, V (Munich, Tech. U. ; Heidelberg, Max Planck Inst.) ; Blazhev, A (Cologne U.) ; Bönig, S (Tech. U. Darmstadt, Inst. Nucl. Phys.) ; Butler, P A (Liverpool U.) ; Cederkäll, J (CERN) et al.
The isotopes Cd122,124,126 were studied in a “safe” Coulomb-excitation experiment at the radioactive ion-beam facility REX-ISOLDE at CERN. The reduced transition probabilities B(E2;0g.s.+→21+) and limits for the quadrupole moments of the first 2+ excited states in the three isotopes were determined. [...]
2014 - 10 p.
- Published in : Phys. Rev. C 89 (2014) 014313
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