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1.
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Axial and triaxial degrees of freedom in $^{72}$Zn
/ Hellgartner, S (Munich, Tech. U.) ; Mücher, D (Cologne U. ; Guelph U. ; TRIUMF) ; Wimmer, K (Darmstadt, GSI ; Madrid, Inst. Estructura Materia ; Tokyo U.) ; Bildstein, V (Guelph U.) ; Egido, J L (Madrid, Autonoma U.) ; Gernhäuser, R (Munich, Tech. U.) ; Krücken, R (LBNL, NSD) ; Nowak, A K (Munich, Tech. U.) ; Zielinska, M (IRFU, Saclay) ; Bauer, C (Darmstadt, Tech. U.) et al.
The unstable N=42 nucleus 72Zn has been studied using multiple safe Coulomb excitation in inverse kinematics. The experiment was performed at the REX-ISOLDE facility at CERN making first use of the silicon detector array C-REX in combination with the γ-ray spectrometer Miniball. [...]
2023 - 8 p.
- Published in : Phys. Lett. B 841 (2023) 137933
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2.
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Coulomb excitation of pear-shaped nuclei
/ Butler, Peter (Liverpool U.) ; Gaffney, Liam (Liverpool U. ; CERN) ; Spagnoletti, Pietro (West Scotland U.) ; Konki, Joonas (CERN) ; Scheck, Marcus (West Scotland U.) ; Smith, John (West Scotland U.) ; Abrahams, Kenzo (Western Cape U.) ; Bowry, Michael (TRIUMF) ; Cederkäll, Joakim (Lund U.) ; Chupp, Timothy (Michigan U.) et al.
There is a large body of evidence that atomic nuclei can undergo octupole distortion and assume the shape of a pear. This phenomenon is important for measurements of electric-dipole moments of atoms, which would indicate CP violation and hence probe physics beyond the Standard Model of particle physics. [...]
2019 - 5 p.
- Published in : EPJ Web Conf. 223 (2019) 01007
Fulltext: PDF;
In : IV International Conference on Nuclear Structure and Dynamics (NSD2019), Venice, Italy, 13 -17 May 2019, pp.01007
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3.
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Coulomb excitation of $^{222}$Rn
/ Spagnoletti, P (West Scotland U. ; Simon Fraser U., Dept. Chem.) ; Butler, P A (Liverpool U.) ; Gaffney, L P (Liverpool U. ; CERN) ; Abrahams, K (Western Cape U.) ; Bowry, M (West Scotland U. ; TRIUMF) ; Cederkäll, J (Lund U.) ; Chupp, T (U. Michigan, Ann Arbor) ; de Angelis, G (INFN, Legnaro) ; De Witte, H (Leuven U.) ; Garrett, P E (Guelph U.) et al.
The nature of quadrupole and octupole collectivity in $^{222}$Rn was investigated by determining the electric-quadrupole (E2) and octupole (E3) matrix elements using subbarrier, multistep Coulomb excitation. The radioactive $^{222}$Rn beam, accelerated to 4.23 MeV/u, was provided by the HIE-ISOLDE facility at CERN. [...]
2022 - 10 p.
- Published in : Phys. Rev. C 105 (2022) 024323
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4.
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Excited states in $^{217}$Ra populated in the α decay of $^{221}$Th
/ Parr, E (West Scotland U. ; SUPA, UK) ; Smith, J F (West Scotland U. ; SUPA, UK) ; Greenlees, P T (Jyvaskyla U.) ; Auranen, K (Jyvaskyla U.) ; Chapman, R (West Scotland U. ; SUPA, UK) ; Cullen, D M (Manchester U.) ; Grahn, T (Jyvaskyla U.) ; Grocutt, L (West Scotland U. ; SUPA, UK) ; Herzáň, A (Jyvaskyla U. ; Bratislava, Inst. Phys.) ; Herzberg, R D (Liverpool U.) et al.
Fine structure in the α decay of $^{221}_{90}$Th, populating excited states in $^{217}_{88}$Ra, was studied using αγ-coincidence spectroscopy. Two α-decay branches from $^{221}$Th have been newly observed, with $E_{\alpha} \mathrm{(keV)} [b_{\alpha}(\%)]=7951(8)[0.14(3)]$ and $8247(3)[1.51(12)]$, together with three previously known branches. [...]
2020 - 12 p.
- Published in : Phys. Rev. C 102 (2020) 054335
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5.
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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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6.
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Electric and magnetic dipole strength in $^{66}$Zn
/ Schwengner, R (HZDR, Dresden) ; Massarczyk, R (Los Alamos) ; Scheck, M (Paisley U.) ; Tornow, W (Duke U. ; TUNL, Durham) ; Battaglia, G (Strathclyde U.) ; Beck, T (Darmstadt, Tech. Hochsch.) ; Bemmerer, D (HZDR, Dresden) ; Benouaret, N (Algiers U. Sci. Tech.) ; Beyer, R (HZDR, Dresden) ; Butterling, M (HZDR, Dresden) et al.
The dipole strength of the nuclide $^{66}$Zn was studied in photon-scattering experiments using bremsstrahlung produced with electron beams of energies of 7.5 and 13.4 MeV at the γELBE facility as well as using quasimonoenergetic and linearly polarized photon beams of 30 energies within the range of 4.3 to 9.9 MeV at the HIγS facility. A total of 128 J=1 states were identified, among them 9 with 1$^+$ and 86 with 1$^−$ assignments. [...]
2021 - 14 p.
- Published in : Phys. Rev. C 103 (2021) 024312
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7.
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Publisher Correction: The observation of vibrating pear-shapes in radon nuclei [doi: 10.1038/s41467-019-10494-5]
/ Butler, P A (Liverpool U.) ; Gaffney, L P (Liverpool U. ; CERN) ; Spagnoletti, P (West Scotland U.) ; Konki, J (CERN) ; Scheck, M (West Scotland U.) ; Smith, J F (West Scotland U.) ; Abrahams, K (Western Cape U.) ; Bowry, M (TRIUMF) ; Cederkäll, J (Lund U.) ; Chupp, T et al.
An amendment to this paper has been published and can be accessed via a link at the top of the paper..
2020 - 1 p.
- Published in : Nature Commun. 11 (2020) 5185
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8.
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Restoring the valence-shell stabilization in $^{140}$Nd
/ Kern, R (Darmstadt, Tech. U.) ; Zidarova, R (Darmstadt, Tech. U. ; Sofiya U.) ; Pietralla, N (Darmstadt, GSI) ; Rainovski, G (Sofiya U.) ; Stegmann, R (Darmstadt, GSI) ; Blazhev, A (Cologne U.) ; Boukhari, A (CERN) ; Cederkäll, J (CERN ; Lund U. (main)) ; Cubiss, J G (York U., England) ; Djongolov, M (Sofiya U.) et al.
A projectile Coulomb-excitation experiment was performed at the radioactive-ion beam facility HIE-ISOLDE at CERN to obtain $E2$ and $M1$ transition matrix elements of $^{140}$Nd using the multistep Coulomb-excitation code GOSIA. The absolute $M1$ strengths, $\textrm{B}(M1;2^+_2→2^+_1)=0.033(8)μ^2_N,\textrm{B}(M1;2^+_3→2^+_1)=0.26^{+0.11}_{−0.10}μ^2_N$, and $\textrm{B}(M1;2^+_4→2^+_1)<0.04μ^2_{\textrm{N}}$, identify the $2^+_3$ state as the main fragment of the one-quadrupole-phonon proton-neutron mixed-symmetry state of $^{140}$Nd. [...]
2020 - 6 p.
- Published in : Phys. Rev. C 102 (2020) 041304
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9.
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Addendum: The observation of vibrating pear-shapes in radon nuclei
/ Butler, P A (Liverpool U.) ; Gaffney, L P (Liverpool U. ; CERN) ; Spagnoletti, P (West Scotland U.) ; Konki, J (CERN) ; Scheck, M (West Scotland U.) ; Smith, J F (West Scotland U.) ; Abrahams, K (Western Cape U.) ; Bowry, M (TRIUMF) ; Cederkäll, J (Lund U.) ; Chupp, T (Michigan U.) et al.
2020
- Published in : Nature Commun. 11 (2020) 3560
Fulltext: PDF; External link: Fulltext from publisher
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10.
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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
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