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From Calcium to Cadmium: Testing the Pairing Functional through Charge Radii Measurements of $^{100−130}$Cd
/ Hammen, M (Mainz U., Inst. Kernchem.) ; Nörtershäuser, W (Mainz U., Inst. Kernchem. ; Darmstadt, Tech. Hochsch.) ; Balabanski, D L (Sofiya, Inst. Nucl. Res.) ; Bissell, M L (Leuven U. ; Manchester U.) ; Blaum, K (Heidelberg, Max Planck Inst.) ; Budinčević, I (Leuven U.) ; Cheal, B (Liverpool U.) ; Flanagan, K T (Manchester U.) ; Frömmgen, N (Mainz U., Inst. Kernchem.) ; Georgiev, G (CSNSM, Orsay) et al.
Differences in mean-square nuclear charge radii of $^{100–130} \rm{Cd}$ are extracted from high-resolution collinear laser spectroscopy of the $5s^2 S_{1/2} \to 5p^2 P_{3/2}$ transition of the ion and from the $5s5p^3P_2 \to 5s6s^3S_1$ transition in atomic Cd. The radii show a smooth parabolic behavior on top of a linear trend and a regular odd-even staggering across the almost complete $sdgh$ shell. [...]
2018 - 6 p.
- Published in : Phys. Rev. Lett. 121 (2018) 102501
Fulltext: PDF;
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Spins and electromagnetic moments of $^{101–109}$Cd
/ Yordanov, D T (Orsay, IPN ; Heidelberg, Max Planck Inst. ; CERN) ; Balabanski, D L (Bucharest, IFIN-HH) ; Bissell, M L (Manchester U. ; Leuven U.) ; Blaum, K (Heidelberg, Max Planck Inst.) ; Blazhev, A (Cologne U.) ; Budinčević, I (Leuven U.) ; Frömmgen, N (Mainz U., Inst. Kernchem.) ; Geppert, Ch (Darmstadt, Tech. U. ; Mainz U., Inst. Kernchem. ; Darmstadt, GSI) ; Grawe, H (Darmstadt, GSI) ; Hammen, M (Mainz U., Inst. Kernchem.) et al.
The neutron-deficient cadmium isotopes have been measured by high-resolution laser spectroscopy at CERN-ISOLDE. The electromagnetic moments of Cd101 have been determined for the first time and the quadrupole-moment precision of Cd103 has been vastly improved. [...]
2018 - 5 p.
- Published in : Phys. Rev. C 98 (2018) 011303
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Spin and magnetic moment of $^{23}$Mg
/ Yordanov, D T (Orsay, IPN ; Heidelberg, Max Planck Inst. ; CERN) ; Bissell, M L (Manchester U. ; Leuven U.) ; Blaum, K (Heidelberg, Max Planck Inst.) ; De Rydt, M (Leuven U.) ; Geppert, Ch (Darmstadt, Tech. Hochsch. ; Mainz U., Inst. Phys.) ; Krämer, J (Darmstadt, Tech. Hochsch. ; Mainz U., Inst. Phys.) ; Kreim, K (Heidelberg, Max Planck Inst.) ; Kowalska, M (Heidelberg, Max Planck Inst. ; CERN) ; Krieger, A (Mainz U., Inst. Phys.) ; Lievens, P (Leuven U.) et al.
A negative magnetic moment of $^{23}$Mg has been determined by collinear laser spectroscopy at CERN-ISOLDE. The absolute value is in agreement with previous measurements by nuclear magnetic resonance while the sign points at high-seniority configurations. [...]
2017 - 7 p.
- Published in : J. Phys. G 44 (2017) 075104
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Frequency-comb based collinear laser spectroscopy of Be for nuclear structure investigations and many-body QED tests
/ Krieger, A ; Nörtershäuser, W ; Geppert, Ch ; Blaum, K ; Bissell, M L ; Frömmgen, N ; Hammen, M ; Kreim, K ; Kowalska, M (CERN) ; Krämer, J et al.
Absolute transition frequencies of the $2s\,^2{\rm{S}}_{1/2}$ $\rightarrow$ $2p\,^2{\rm{P}}_{1/2,3/2}$ transitions in Be$^+$ were measured with a frequency comb in stable and short-lived isotopes at ISOLDE (CERN) using collinear laser spectroscopy. Quasi-simultaneous measurements in copropagating and counterpropagating geometry were performed to become independent from acceleration voltage determinations for Doppler-shift corrections of the fast ion beam. [...]
arXiv:1609.07655.-
2017 - 28 p.
- Published in : Appl. Phys. B 123 (2017) 15
External link: Preprint
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Changes in nuclear structure along the Mn isotopic chain studied via charge radii
/ Heylen, H. (Leuven U.) ; Babcock, C. (CERN ; Liverpool U.) ; Beerwerth, R. (Helmholtz Inst., Jena ; Jena U., TPI) ; Billowes, J. (Manchester U.) ; Bissell, M.L. (Leuven U. ; Manchester U.) ; Blaum, K. (Heidelberg, Max Planck Inst.) ; Bonnard, J. (INFN, Padua) ; Campbell, P. (Manchester U.) ; Cheal, B. (Liverpool U.) ; Day Goodacre, T. (Manchester U.) et al.
The hyperfine spectra of $^{51,53-64}$Mn were measured in two experimental runs using collinear laser spectroscopy at ISOLDE, CERN. Laser spectroscopy was performed on the atomic $3d^5\ 4s^2\ ^{6}\text{S}_{5/2}\rightarrow 3d^5\ 4s4p\ ^{6}\text{P}_{3/2}$ and ionic $3d^5\ 4s\ ^{5}\text{S}_2 \rightarrow 3d^5\ 4p\ ^{5}\text{P}_3$ transitions, yielding two sets of isotope shifts. [...]
arXiv:1609.05021.-
2016-11-28 - 11 p.
- Published in : Phys. Rev. C 94 (2016) 054321
APS Open Access article: PDF; Fulltext: PDF; External link: Preprint
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Evidence for Increased neutron and proton excitations between $^{51-63}$Mn
/ Babcock, C (CERN ; Liverpool U.) ; Heylen, H (Leuven U.) ; Billowes, J (Manchester U.) ; Bissell, M L (Leuven U.) ; Blaum, K (Heidelberg, Max Planck Inst.) ; Campbell, P (Manchester U.) ; Cheal, B (Liverpool U.) ; Garcia Ruiz, R F (Leuven U.) ; Geppert, C (Mainz U., Inst. Kernchem. ; Darmstadt, Tech. Hochsch.) ; Gins, W (Leuven U.) et al.
The hyperfine structures of the odd-even 51 − 63 Mn atoms ( N=26−38 ) were measured using bunched beam collinear laser spectroscopy at ISOLDE, CERN. The extracted spins and magnetic dipole moments have been compared to large-scale shell-model calculations using different model spaces and effective interactions. [...]
2015 - 5 p.
- Published in : Phys. Lett. B 750 (2015) 176-180
Elsevier Open Access article: PDF;
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Simple Nuclear Structure in Cd111–129 from Atomic Isomer Shifts
/ Yordanov, D T (Orsay, IPN ; Heidelberg, Max Planck Inst. ; CERN) ; Balabanski, D L (Bucharest, IFIN-HH) ; Bissell, M L (Leuven U.) ; Blaum, K (Heidelberg, Max Planck Inst.) ; Budinčević, I (Leuven U.) ; Cheal, B (Liverpool U.) ; Flanagan, K (Manchester U.) ; Frömmgen, N (Mainz U., Inst. Kernchem.) ; Georgiev, G (CSNSM, Orsay) ; Geppert, Ch (Mainz U., Inst. Kernchem. ; Darmstadt, GSI) et al.
Isomer shifts have been determined in Cd111–129 by high-resolution laser spectroscopy at CERN-ISOLDE. The corresponding mean square charge-radii changes, from the 1/2+ and the 3/2+ ground states to the 11/2- isomers, have been found to follow a distinct parabolic dependence as a function of the atomic mass number. [...]
2016 - 5 p.
- Published in : Phys. Rev. Lett. 116 (2016) 032501
APS Open Access article: PDF; Fulltext: PDF;
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Unexpectedly large charge radii of neutron-rich calcium isotopes
/ Garcia Ruiz, R. F. (Leuven U.) ; Bissell, M.L. (Leuven U. ; Manchester U.) ; Blaum, K. (Heidelberg, Max Planck Inst.) ; Ekström, A. (Oak Ridge ; Tennessee U.) ; Frömmgen, N. (Mainz U., Inst. Kernchem.) ; Hagen, G. (Oak Ridge) ; Hammen, M. (Mainz U., Inst. Kernchem.) ; Hebeler, K. (Darmstadt, Tech. Hochsch. ; Darmstadt, EMMI) ; Holt, J.D. (TRIUMF) ; Jansen, G.R. (Oak Ridge ; Tennessee U.) et al.
Despite being a complex many-body system, the atomic nucleus exhibits simple structures for certain ‘magic’ numbers of protons and neutrons. The calcium chain in particular is both unique and puzzling: evidence of doubly magic features are known in 40,48Ca, and recently suggested in two radioactive isotopes, 52,54Ca. [...]
arXiv:1602.07906.-
2016 - 6 p.
- Published in : Nature Phys. 12 (2016) 594-598
Fulltext: PDF; External link: Fulltext
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