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Evolution of quadrupole collectivity in N=80 isotones toward the Z=64 subshell gap: The $B(E2;2_{1}^{+} \rightarrow 0_{1}^{+})$ value of $^{142}$Sm
/ Stegmann, R (Darmstadt, Tech. Hochsch.) ; Bauer, C (Darmstadt, Tech. Hochsch.) ; Rainovski, G (Sofiya U.) ; Pietralla, N (Darmstadt, Tech. Hochsch.) ; Stahl, C (Darmstadt, Tech. Hochsch.) ; Bönig, S (Darmstadt, Tech. Hochsch.) ; Ilieva, S (Darmstadt, Tech. Hochsch.) ; Blazhev, A (Cologne U.) ; Damyanova, A (Sofiya U. ; Geneva U.) ; Danchev, M (Sofiya U.) et al.
It was shown that the evolution of the $B(E2;2_{1}^{+} \rightarrow 0_{1}^{+})$ values in $N$ = 80 isotones from Te to Nd is affected by the underlying subshell structure. This manifests itself in the observation of the local suppression of the $B(E2)$ value at $Z$ = 58 with respect to the neighboring nuclei $^{136}$Ba and $^{140}$Nd. [...]
APS, 2015 - 5 p.
- Published in : Phys. Rev. C 91 (2015) 054326
Published fulltext: PDF;
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Search for Isovector Valence-Shell Excitations in $^{140}$Nd and $^{142}$Sm via Coulomb excitation reactions of radioactive ion beams
/ Kern, Ralph (Darmstadt, Tech. U.) ; Stegmann, Robert (Darmstadt, Tech. U.) ; Pietralla, Norbert (Darmstadt, Tech. U.) ; Rainovski, Georgi (Sofiya U.) ; Gaffney, Liam Paul (CERN) ; Blazhev, Andrey (Cologne U.) ; Boukhari, Amar (CERN) ; Cederkäll, Joakim (CERN ; Lund U.) ; Cubiss, James (CERN) ; Djongolov, Martin (Sofiya U.) et al.
Projectile Coulomb excitation experiments were performed at HIE-ISOLDE at CERN with the radioactive ion beams of $^{140}$Nd and $^{142}$Sm. Ions with an energy of 4.62 MeV/A were impinging on a 1.45 mg/cm$^2$ thick $^{208}$Pb target. [...]
2018 - 5 p.
- Published in : EPJ Web Conf. 194 (2018) 03003
Fulltext: PDF;
In : International Conference Nuclear Structure and Related Topics, Burgas, Bulgaria, 3 - 9 Jun 2018, pp.03003
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Coulomb Excitation of Proton-rich $N = 80$ Isotones at HIE-ISOLDE
/ Kern, Ralph (Darmstadt, Tech. U.) ; Zidarova, Radostina (Darmstadt, Tech. U.) ; Pietralla, Norbert (Darmstadt, Tech. U.) ; Rainovski, Georgi (Sofiya U.) ; Gaffney, Liam P (CERN) ; Blazhev, Andrey (Cologne U.) ; Boukhari, Amar (CERN) ; Cederkäll, Joakim (CERN ; Lund U. (main)) ; Cubiss, James G (York U., England) ; Djongolov, Martin (Sofiya U.) et al.
A projectile Coulomb-excitation experiment was performed at the radioactive ion beam facility HIE-ISOLDE at CERN. The radioactive $^{140}$Nd and $^{142}$Sm ions were post accelerated to the energy of 4.62 MeV/A and impinged on a 1.45 mg/cm$^2$-thin $^{208}$Pb target. [...]
2020 - 8 p.
- Published in : J. Phys. : Conf. Ser. 1555 (2020) 012027
Fulltext: PDF;
In : 23rd International School on Nuclear Physics, Neutron Physics and Applications, Varna, Bulgaria, 22 - 28 Sep 2019, pp.012027
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Shell Structure and Shape Changes in Neutron Rich Krypton Isotopes
/ Mücher, D (Cologne U.) ; Iwanicki, J (Warsaw U.) ; Jolie, J (Cologne U.) ; Stefanescu, I (Leuven U.) ; de Walle, J Van (Leuven U.) ; Becker, F (Darmstadt, GSI) ; Bergmann, U (CERN) ; Blazhev, A (Cologne U.) ; Bouchez, E (IRFU, SPhN, Saclay) ; Butler, P (Liverpool U.) et al.
B(E2;2$_{1}^{+}$ $\rightarrow$0$_{1}^{+})$ values have been measured for the unstable nuclei $^{88}$ Kr (N = 52) and $^{92}$Kr (N = 56) using projectile Coulomb excitation at ISOLDE, CERN. With this experiment the local maximum in E(2$_{1}^{+}$) in $^{92}$Kr and the role of the N = 56 subshell closure can be studied..
2009 - 2 p.
- Published in : AIP Conf. Proc. 1090 (2009) 587-588
In : 13th International Symposium on Capture Gamma-Ray Spectroscopy and Related Topics, Cologne, Germany, 25 – 29 Aug 2008, pp.587-588
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Prolate shape of $^{140}$Ba from a first combined Doppler-shift and Coulomb-excitation measurement at the REX-ISOLDE facility
/ Bauer, C (Darmstadt, Tech. Hochsch.) ; Behrens, T (Munich, Tech. U.) ; Bildstein, V (Munich, Tech. U.) ; Blazhev, A (Cologne U.) ; Bruyneel, B (Cologne U.) ; Butterworth, J (York U., England) ; Clement, E (GANIL) ; Coquard, L (Darmstadt, Tech. Hochsch.) ; Egido, J L (Madrid, Autonoma U.) ; Ekstrom, A (Lund U.) et al.
2012 - 8 p.
- Published in : Phys. Rev. C 86 (2012) 034310
APS Published version, local copy: PDF;
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7.
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Emerging simplicity: Evidence for the formation of collectivity from hadronic and EM probes
/ Pietralla, N (Darmstadt, Tech. Hochsch. ; Darmstadt, GSI) ; Moller, Th (Darmstadt, Tech. Hochsch.) ; Ahn, T (Darmstadt, Tech. Hochsch. ; Yale U. ; Michigan State U., NSCL) ; Bauer, Ch (Darmstadt, Tech. Hochsch.) ; Coquard, L (Darmstadt, Tech. Hochsch.) ; Danchev, M (Sofiya U.) ; Gladnishki, K A (Sofiya U.) ; Krugmann, A (Darmstadt, Tech. Hochsch.) ; Leske, J (Darmstadt, Tech. Hochsch.) ; Moller, O (Darmstadt, Tech. Hochsch.) et al.
2012
Fulltext: PDF;
In : 13th international conference on nuclear reaction mechanisms, Villa Monastero, Varenna, Italy, 11 - 15 Jun 2012, pp.301
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Collective 2$^{+1}$ excitations in$^{206}$Po and$^{208,210}$Rn
/ Grahn, T (Jyvaskyla U. ; Helsinki Inst. of Phys.) ; Pakarinen, J (Jyvaskyla U. ; Helsinki Inst. of Phys. ; CERN) ; Jokiniemi, L (Jyvaskyla U.) ; Albers, M (Cologne U.) ; Auranen, K (Jyvaskyla U. ; Helsinki Inst. of Phys.) ; Bauer, C (Darmstadt, Tech. Hochsch.) ; Bernards, C (Yale U.) ; Blazhev, A (Cologne U.) ; Butler, P A (Liverpool U.) ; Bönig, S (Darmstadt, Tech. Hochsch.) et al.
In the present study, $B(E2, 2^{+1}\rightarrow 0^{+1})$ values have been measured in the$^{208,210}$Rn and$^{206}$Po nuclei through Coulomb excitation of re-accelerated radioactive beams in inverse kinematics at CERN-ISOLDE. These nuclei have been proposed to lie in, or at the boundary of the region where the seniority scheme should persist. [...]
2016
- Published in : Eur. Phys. J. A 52 (2016) 340
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High-Statistics Sub-Barrier Coulomb Excitation of $^{106,108,110}$Sn
/ Park, J (Lund U.) ; Knyazev, A (Lund U.) ; Rickert, E (Lund U.) ; Golubev, P (Lund U.) ; Cederkäll, J (Lund U. ; CERN) ; Andreyev, A N (CERN ; York U., England) ; de Angelis, G (INFN, Legnaro) ; Arnswald, K (Cologne U.) ; Barber, L (Manchester U.) ; Berger, C (Munich, Tech. U.) et al.
A Coulomb excitation campaign on $^{106,108,110}$Sn at 4.4–4.5 MeV/u was launched at the HIE-ISOLDE facility at CERN. Larger excitation cross sections and γ-ray statistics were achieved compared to previous experiments at ∼2.8 MeV/u. [...]
2020 - 3 p.
- Published in : JPS Conf. Proc. 32 (2020) 010036
Fulltext: PDF;
In : 13th International Conference on Nucleus-Nucleus Collisions (NN 2018), Omiya, Saitama, Japan, 4 - 8 Dec 2018, pp.010036
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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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