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Simulations of a cryogenic, buffer-gas filled Paul trap for low-emittance ion bunches
/ Lechner, S (CERN ; Vienna, Tech. U. ; McGill U.) ; Sels, S (CERN) ; Belosevic, I (TRIUMF) ; Buchinger, F (McGill U.) ; Fischer, P (Greifswald U.) ; Kanitz, C (Erlangen - Nuremberg U.) ; Lagaki, V (CERN ; Greifswald U.) ; Maier, F M (CERN ; Greifswald U.) ; Plattner, P (CERN ; Innsbruck U.) ; Schweikhard, L (Greifswald U.) et al.
Many experiments with pulsed ion beams benefit from or even require ion bunches with both small temporal width as well as small energy spread. To achieve optimal ion-beam preparation, a buffer-gas filled cryogenic Paul trap is being developed in the context of the Multi Ion Reflection Apparatus for Collinear Laser Spectroscopy (MIRACLS). [...]
2024 - 13 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 1065 (2024) 169471
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Increased beam energy as a pathway towards a highly selective and high-flux MR-ToF mass separator
/ Maier, F M (CERN ; Greifswald U.) ; Buchinger, F (McGill U.) ; Croquette, L (McGill U.) ; Fischer, P (Greifswald U.) ; Heylen, H (CERN) ; Hummer, F (CERN ; McGill U.) ; Kanitz, C (CERN) ; Kwiatkowski, A A (TRIUMF) ; Lagaki, V (CERN) ; Lechner, S (CERN ; McGill U.) et al.
Many experiments at radioactive ion beam (RIB) facilities suffer from isobaric contamination, i.e. unwanted
ions of similar mass. [...]
2023 - 17 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 1056 (2023) 168545
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3.
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Doppler and sympathetic cooling for the investigation of short-lived radioactive ions
/ Sels, S (CERN ; Leuven U.) ; Maier, F M (CERN ; Greifswald U.) ; Au, M (CERN ; Mainz U.) ; Fischer, P (Greifswald U.) ; Kanitz, C (CERN) ; Lagaki, V (CERN ; Greifswald U.) ; Lechner, S (CERN ; TU Vienna) ; Leistenschneider, E (CERN) ; Leimbach, D (CERN ; Mainz U., Inst. Phys. ; U. Gothenburg (main)) ; Lykiardopoulou, E M (British Columbia U. ; TRIUMF) et al.
At radioactive ion beam (RIB) facilities, ions of short-lived radionuclides are cooled and bunched in buffergas-filled Paul traps to improve the ion-beam quality for subsequent experiments. To deliver even colder ions, beneficial to RIB experiments’ sensitivity or accuracy, we employ Doppler and sympathetic cooling in a Paul trap cooler-buncher. [...]
2022 - 19 p.
- Published in : Phys. Rev. Res. 4 (2022) 033229
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4.
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Stray-light Suppression for the MIRACLS Proof-of-principle Experiment
/ Lagaki, V (CERN ; Greifswald U.) ; Fischer, P (Greifswald U.) ; Heylen, H (CERN) ; Hummer, F (Linz U.) ; Lechner, S (CERN ; TU Vienna) ; Sels, S (CERN) ; Maier, F (Linz U.) ; Plattner, P (CERN ; Innsbruck U.) ; Rosenbusch, M (Greifswald U.) ; Wienholtz, F (CERN ; Greifswald U. ; Darmstadt, Tech. U.) et al.
The Multi-Ion Reflection Apparatus for Collinear Laser Spectroscopy
(MIRACLS), currently under development at ISOLDE/CERN, aims to
combine the high resolution of fluorescence-based collinear laser spectroscopy (CLS) with a high sensitivity. This will be achieved by confining
30-keV ion bunches in a Multi-Reflection Time-of-Flight (MR-ToF) device
which allows laser spectroscopic probing for several thousand times. [...]
2020 - 6 p.
- Published in : Acta Phys. Pol. B 51 (2020) 571
Fulltext: PDF;
In : 36th Mazurian Lakes Conference on Physics : Probing fundamental laws of nature with exotic nuclei and atoms, Piaski, Poland, 1 - 7 Sep 2019, pp.571
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5.
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Electromagnetic moments of scandium isotopes and $N=28$ isotones in the distinctive $0f_{7/2}$ orbit
/ Bai, S.W. (Peking U., SKLNPT) ; Koszorús, Á. (Leuven U. ; Liverpool U.) ; Hu, B.S. (Peking U., SKLNPT ; TRIUMF) ; Yang, X.F. (Peking U., SKLNPT) ; Billowes, J. (Manchester U.) ; Binnersley, C.L. (Manchester U.) ; Bissell, M.L. (Manchester U.) ; Blaum, K. (Heidelberg, Max Planck Inst.) ; Campbell, P. (Manchester U.) ; Cheal, B. (Liverpool U.) et al.
The electric quadrupole moment of $^{49}$Sc was measured by collinear laser spectroscopy at CERN-ISOLDE to be $Q_{\rm s}=-0.159(8)$$e$b, and a nearly tenfold improvement in precision was reached for the electromagnetic moments of $^{47,49}$Sc. The single-particle behavior and nucleon-nucleon correlations are investigated with the electromagnetic moments of $Z=21$ isotopes and $N=28$ isotones as valence neutrons and protons fill the distinctive $0f_{7/2}$ orbit, respectively, located between magic numbers, 20 and 28. [...]
arXiv:2203.09111.-
2022-04-02 - 8 p.
- Published in : Phys. Lett. B 829 (2022) 137064
Fulltext: Publication - PDF; 2203.09111 - PDF;
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6.
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7.
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An accuracy benchmark of the MIRACLS apparatus: Conventional, single-passage collinear laser spectroscopy inside a MR-ToF device
/ Lagaki, V (CERN ; Greifswald U.) ; Heylen, H (CERN) ; Belosevic, I (TRIUMF) ; Fischer, P (Greifswald U.) ; Kanitz, C (CERN ; Erlangen - Nuremberg U.) ; Lechner, S (CERN ; TU Vienna) ; Maier, F M (CERN ; Greifswald U.) ; Nörtershäuser, W (Darmstadt, Tech. U.) ; Plattner, P (CERN ; Innsbruck U.) ; Rosenbusch, M (Greifswald U.) et al.
Collinear laser spectroscopy (CLS) has been performed in a multi-reflection time-of-flight (MR-ToF) device operated in single-pass mode, i.e., without confining the ions in the ion trap. While our Multi Ion Reflection Apparatus for Collinear Laser Spectroscopy (MIRACLS) aims to increase the CLS sensitivity by storing ions in the MR-ToF device, the present work characterises conventional single-passage CLS as a preparatory step for the upcoming comparison with MIRACLS’ multi-pass mode. [...]
2021 - 10 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 1014 (2021) 165663
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8.
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Doubly-magic character of $^{132}$Sn studied via electromagnetic moments of $^{133}$Sn
/ Rodríguez, L V (Orsay, IPN ; Heidelberg, Max Planck Inst.) ; Balabanski, D L (Bucharest, IFIN-HH) ; Bissell, M L (Manchester U.) ; Blaum, K (Heidelberg, Max Planck Inst.) ; Cheal, B (Liverpool U.) ; De Gregorio, G (INFN, Naples ; Napoli Seconda U.) ; Ekman, J (Malmo U.) ; Garcia Ruiz, R F (CERN) ; Gargano, A (INFN, Naples) ; Georgiev, G (CSNSM, Orsay) et al.
We report the first measurement of the magnetic dipole and electric quadrupole moment of the exotic nucleus $^{132}$Sn by high-resolution laser spectroscopy at ISOLDE/CERN. These, in combination with state-of-the-art shell-model calculations, demonstrate the single-particle character of the ground state of this short-lived isotope and, hence, the doubly-magic character of its immediate neighbor $^{132}$Sn. [...]
2020 - 6 p.
- Published in : Phys. Rev. C 102 (2020) 051301
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9.
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Structural trends in atomic nuclei from laser spectroscopy of tin
/ Yordanov, Deyan T. (Orsay, IPN ; CERN) ; Rodríguez, Liss V. (Orsay, IPN ; Heidelberg, Max Planck Inst.) ; Balabanski, Dimiter L. (ELI-NP, Bucharest) ; Bieroń, Jacek (Jagiellonian U.) ; Bissell, Mark L. (Manchester U.) ; Blaum, Klaus (Heidelberg, Max Planck Inst.) ; Cheal, Bradley (Liverpool U.) ; Ekman, Jörgen (Malmo U.) ; Gaigalas, Gediminas (Vilnius U.) ; Garcia Ruiz, Ronald F. (CERN ; MIT) et al.
Tin is the chemical element with the largest number of stable isotopes. Its complete proton shell, comparable with the closed electron shells in the chemically inert noble gases, is not a mere precursor to extended stability; since the protons carry the nuclear charge, their spatial arrangement also drives the nuclear electromagnetism [...]
2020 - 9 p.
- Published in : Commun. Phys. 3 (2020) 107
Accepted Author Manuscript: PDF; Fulltext from Publisher: PDF;
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10.
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Simulations of a Proof-of-Principle Experiment for Collinear Laser Spectroscopy within a Multi-Reflection Time-of-Flight Device
/ Maier, F.M. (Linz U.) ; Fischer, P. (Greifswald U.) ; Heylen, H. (CERN) ; Lagaki, V. (CERN) ; Lechner, S. (CERN ; TU Vienna) ; Plattner, P. (CERN ; Innsbruck U.) ; Sels, S. (Greifswald U. ; CERN) ; Wienholtz, F. (CERN ; Greifswald U.) ; Nörtershäuser, W. (Darmstadt, Tech. U.) ; Schweikhard, L. (Greifswald U.) et al.
For nearly four decades Collinear Laser Spectroscopy (CLS) has been employed to determine ground-state properties of short-lived radionuclides. To extend its reach to the most exotic radionuclides with very low production yields, the novel Multi Ion Reflection Apparatus for CLS (MIRACLS) is currently under development at ISOLDE/CERN. [...]
CERN-ISOLDE-CONF-2019-007.-
Geneva : CERN, 2019 - 13.
- Published in : Hyperfine Interact 240 (2019) 54
Fulltext: PDF;
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