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Radiative Decay of the $^{229m}$Th Nuclear Clock Isomer in Different Host Materials
/ Pineda, S.V. (Leuven U.) ; Chhetri, P. (Leuven U. ; Mainz U.) ; Bara, S. (Leuven U.) ; Elskens, Y. (Leuven U.) ; Casci, S. (Leuven U.) ; Alexandrova, A.N. (UCLA, Los Angeles (main)) ; Au, M. (CERN) ; Athanasakis-Kaklamanakis, M. (Leuven U. ; CERN ; Imperial Coll., London) ; Bartokos, M. (Vienna, Tech. U., Atominst.) ; Beeks, K. (Ecole Polytechnique, Lausanne) et al.
A comparative vacuum ultraviolet spectroscopy study conducted at ISOLDE-CERN of the radiative decay of the $^{229m}$Th nuclear clock isomer embedded in different host materials is reported. [...]
arXiv:2408.12309.
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13.
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Production and study of neutron rich heavy nuclei, GALS setup
/ Zemlyanoy, S (Dubna, JINR) ; Avvakumov, K (Dubna, JINR) ; Myshinsky, G (Dubna, JINR) ; Zhemenik, V (Dubna, JINR) ; Kudryavtsev, Yu (Leuven U.) ; Fedosseev, V (CERN) ; Bark, R (iThemba LABS) ; Janas, Z (Warsaw U.)
A new setup for production and investigation of exotic heavy neutron rich nuclei located in the "north-east" region of nuclear map is under construction at Flerov Laboratory for Nuclear Reactions (FLNR) of JINR, Dubna. The setup will use the available U-400M cyclotron beams for low energy multi-nucleon transfer reactions. [...]
2020 - 6 p.
- Published in : J. Phys. : Conf. Ser. 1555 (2020) 012021
Fulltext: PDF;
In : 23rd International School on Nuclear Physics, Neutron Physics and Applications, Varna, Bulgaria, 22 - 28 Sep 2019, pp.012021
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Design and commissioning of an ion guide system for In-Gas Laser Ionization and Spectroscopy experiments
/ Sels, S (CERN ; Leuven U.) ; Ferrer, R (Leuven U.) ; Dockx, K (Leuven U.) ; Granados Buitrago, C (Leuven U. ; CERN) ; Huyse, M (Leuven U.) ; Kudryavtsev, Yu (Leuven U.) ; Kraemer, S (Leuven U.) ; Raeder, S (Leuven U.) ; Van Den Bergh, P (Leuven U.) ; Van Duppen, P (Leuven U.) et al.
Radio-frequency (RF) ion guides, also known as Linear Paul Traps, are powerful devices to efficiently transport ion beams from high to low pressure regions while keeping good ion optical properties. A set of ion guides comprising three different RF quadrupole (RFQ) structures has been designed using ion-trajectory simulations to improve the performance of the In-Gas Laser Ionizations and Spectroscopy (IGLIS) technique currently under development at KU Leuven. [...]
2020 - 6 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 463 (2020) 148-153
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A new control system for high-precision In-Gas Laser Ionization and Spectroscopy experiments at KU Leuven
/ Dockx, K (Leuven U.) ; Cocolios, T E (Leuven U.) ; Ferrer, R (Leuven U.) ; Granados, C (CERN) ; Kraemer, S (Leuven U.) ; Kudryavtsev, Yu (Leuven U.) ; Sels, S (CERN) ; Van den Bergh, P (Leuven U.) ; Van Duppen, P (Leuven U.) ; Verlinde, M (Leuven U.) et al.
A new automated control system is developed for the In-Gas Laser Ionization and Spectroscopy (IGLIS) laboratory at KU Leuven. The IGLIS Control System is capable of stabilizing a narrowband single-mode tunable
diode laser with a standard deviation of 1.14 MHz. [...]
2020 - 5 p.
- Published in : Nucl. Instrum. Methods Phys. Res., B 463 (2020) 297-301
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5.
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Single-longitudinal-mode pumped pulsed-dye amplifier for high-resolution laser spectroscopy
/ Verlinde, M (Leuven U.) ; Ferrer, R (Leuven U.) ; Claessens, A (Leuven U.) ; Granados, C A (Leuven U. ; CERN) ; Kraemer, S (Leuven U.) ; Kudryavtsev, Yu (Leuven U.) ; Li, D (Unlisted, DE) ; Van den Bergh, P (Leuven U.) ; Van Duppen, P (Leuven U.) ; Verstraelen, E (Leuven U.)
The In-Gas-jet Laser Ionization and Spectroscopy (IGLIS) technique relies on narrow-bandwidth, high-peak-power, short-pulse-length (≈10 ns), and high-repetition-rate laser pulses to probe, precisely and efficiently, the hyperfine structure of medium-heavy and heavy isotopes, embedded in a supersonic jet. The power and repetition rate requirements of the laser system are met by combining ≈100 W, 8 ns pulse width, 10 kHz commercial Nd:YAG pump lasers with a single-mode continuous wave seeded Pulsed Dye Amplifier (PDA). [...]
2020
- Published in : Rev. Sci. Instrum. 91 (2020) 103002
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6.
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Production and Study of Neutron Rich Heavy Nuclei, GALS Setup
/ Zemlyanoy, S G (Dubna, JINR) ; Zagrebaev, V I (Dubna, JINR) ; Avvakumov, K A (Dubna, JINR) ; Kazarinov, N Yu (Dubna, JINR) ; Kudryavtsev, Yu (Leuven U.) ; Fedosseev, V (CERN) ; Bark, R (iThemba LABS) ; Janas, Z (Warsaw U.)
To produce and investigate exotic heavy neutron rich nuclei located in the “north-east” region of nuclear map the new setup is under construction at Flerov Laboratory for Nuclear Reactions (FLNR) of JINR, Dubna. In this setup available U-400M cyclotron beams will be used in low energy multi-nucleon transfer reactions. [...]
2020 - 7 p.
- Published in : 10.1142/9789811209451_0071
In : 9th International Symposium on Exotic Nuclei (EXON 2018), Petrozavodsk, Russian Federation, 10 - 15 Sep 2018, pp.492-498
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7.
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In-gas laser ionization and spectroscopy of actinium isotopes near the $N=126$ closed shell
/ Granados, C (Leuven U.) ; Creemers, P (Leuven U.) ; Ferrer, R (Leuven U.) ; Gaffney, L P (Leuven U.) ; Gins, W (Leuven U.) ; de Groote, R (Leuven U.) ; Huyse, M (Leuven U.) ; Kudryavtsev, Yu (Leuven U.) ; Martinez, Y (Leuven U.) ; Raeder, S (Leuven U.) et al.
The in-gas laser ionization and spectroscopy (IGLIS) technique was applied on the Ac212–215 isotopes, produced at the Leuven Isotope Separator On-Line (LISOL) facility by using the in-gas-cell and the in-gas-jet methods. The first application under on-line conditions of the in-gas-jet laser spectroscopy method showed a superior performance in terms of selectivity, spectral resolution, and efficiency in comparison with the in-gas-cell method. [...]
2017 - 13 p.
- Published in : Phys. Rev. C 96 (2017) 054331
Fulltext: PDF;
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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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9.
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GALS - setup for production and study of multinucleon transfer reaction products: present status
/ Zemlyanoy, S (Dubna, JINR) ; Zagrebaev, V (Dubna, JINR) ; Kozulin, E (Dubna, JINR) ; Kudryavtsev, Yu (KU Leuven, Dept. Phys. Astron.) ; Fedosseev, V (CERN) ; Bark, R (iThemba LABS) ; Janas, Z (Warsaw U.)
This is a brief report on the current status of the new GAs cell based Laser ionization Setup (GALS) at Flerov Laboratory for Nuclear Reactions (FLNR) - JINR, Dubna. GALS is planned to exploit available beams from the U-400M cyclotron in low energy multi-nucleon transfer reactions to study exotic neutron-rich nuclei located in the 'north-east' region of nuclear map. [...]
2016 - 6 p.
- Published in : J. Phys.: Conf. Ser. 724 (2016) 012057
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10.
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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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