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1.
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Smooth trends in fermium charge radii and the impact of shell effects
/ Warbinek, Jessica (Darmstadt, GSI ; Mainz U. ; CERN ; Helmholtz Inst., Mainz) ; Rickert, Elisabeth (Darmstadt, GSI ; Mainz U. ; Helmholtz Inst., Mainz) ; Raeder, Sebastian (Darmstadt, GSI ; Helmholtz Inst., Mainz) ; Albrecht-Schönzart, Thomas (Colorado School of Mines) ; Andelic, Brankica (Darmstadt, GSI ; Helmholtz Inst., Mainz ; Groningen U.) ; Auler, Julian (Mainz U.) ; Bally, Benjamin (IRFU, Saclay) ; Bender, Michael (IP2I, Lyon) ; Berndt, Sebastian (Mainz U.) ; Block, Michael (Darmstadt, GSI ; Mainz U. ; Helmholtz Inst., Mainz) et al.
The quantum-mechanical nuclear-shell structure determines the stability and limits of the existence of the heaviest nuclides with large proton numbers Z ≳ 100 (refs. $^{1–3}$). [...]
2024 - 5 p.
- Published in : Nature 634 (2024) 1075-1079
Fulltext: PDF;
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2.
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Characterization of the field ionization extension for the laser ion source and trap: Measurement of the ionization potential of ytterbium
/ Kaja, Magdalena (Mainz U., Inst. Phys.) ; Studer, Dominik ; Heinke, Reinhard (CERN) ; Kieck, Tom (Darmstadt, GSI ; Helmholtz Inst., Mainz) ; Wendt, Klaus (Mainz U., Inst. Phys.)
We report on the development and application of the Field Ionization Laser Ion Source and Trap (FI-LIST) at the RISIKO mass separator at Mainz University. The FI-LIST is an adaptation of the well-established LIST unit developed at Mainz and successfully adapted to CERN-ISOLDE. [...]
2023 - 7 p.
- Published in : Nucl. Instrum. Methods Phys. Res., B 547 (2024) 165213
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3.
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First on-line application of the high-resolution spectroscopy laser ion source PI-LIST at ISOLDE
/ Heinke, Reinhard (CERN) ; Au, Mia (CERN ; Mainz U.) ; Bernerd, Cyril (CERN ; Leuven U.) ; Chrysalidis, Katerina (CERN) ; Cocolios, Thomas E (Leuven U.) ; Fedosseev, Valentin N (CERN) ; Hendriks, Isabel (CERN ; Lund U. (main)) ; Jaradat, Asar A H (CERN) ; Kaja, Magdalena (Mainz U., Inst. Phys.) ; Kieck, Tom (Darmstadt, GSI ; Helmholtz Inst., Mainz) et al.
We report on the development, characterization, and first application of a specialized resonance ionization laser ion source for high-resolution spectroscopy applications below usual hot cavity Doppler broadening limitations, for on-line experiments at CERN-ISOLDE. The new PI-LIST ion source comprises perpendicular laser/atom beam interaction in a radio-frequency quadrupole unit directly downstream the hot atomizer cavity. [...]
2023 - 5 p.
- Published in : Nucl. Instrum. Methods Phys. Res., B 541 (2023) 8-12
Fulltext: PDF;
In : 19th International Conference on Electromagnetic Isotope Separators and Related Topics (EMIS 2022), Daejeon, Korea, 3 - 7 Oct 2022, pp.8-12
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4.
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Nuclear moments and isotope shifts of the actinide isotopes Cf249–253 probed by laser spectroscopy
/ Weber, Felix (Mainz U., Inst. Phys.) ; Albrecht-Schönzart, Thomas E (Florida State U.) ; Allehabi, Saleh O (New South Wales U.) ; Berndt, Sebastian (Mainz U., Inst. Phys. ; Mainz U.) ; Block, Michael (Darmstadt, GSI ; Mainz U. ; Helmholtz Inst., Mainz) ; Dorrer, Holger (Mainz U.) ; Düllmann, Christoph E (Darmstadt, GSI ; Mainz U. ; Helmholtz Inst., Mainz) ; Dzuba, Vladimir A (New South Wales U.) ; Ezold, Julie G (Oak Ridge) ; Flambaum, Victor V (New South Wales U.) et al.
We report on high-resolution laser spectroscopy studies on Cf249–253 with spectral linewidths in the order of 100 MHz carried out at the RISIKO mass separator at Mainz University. In total three atomic ground-state transitions were investigated and the hyperfine parameters for the odd-A isotopes and isotope shift for all examined isotopes have been determined from the measured spectra. [...]
2023 - 10 p.
- Published in : Phys. Rev. C 107 (2023) 034313
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5.
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The Electron Capture in $^{163}$Ho Experiment - a Short Update
/ Kovac, Neven (Kirchhoff Inst. Phys.) ; Ahrens, Felix (Kirchhoff Inst. Phys.) ; Barth, Arnulf (Kirchhoff Inst. Phys.) ; Berndt, Sebastian (Mainz U. ; Mainz U., Inst. Phys.) ; Blaum, Klaus (Heidelberg, Max Planck Inst.) ; Brass, Martin (U. Heidelberg, ITP) ; Bruer, Erik (Kirchhoff Inst. Phys.) ; Door, Menno (Heidelberg, Max Planck Inst.) ; Dorrer, Holger (Mainz U.) ; Düllmann, Christoph (Mainz U.) et al.
The definition of the absolute neutrino mass scale is one of the main goals of the Particle Physics today.
The study of the end-point regions of the $\beta$- and electron capture (EC) spectrum offers a possibility to determine the effective electron (anti-)neutrino mass in a completely model independent way, as it only relies on the energy and momentum conservation. [...]
2022 - 4 p.
- Published in : PoS EPS-HEP2021 (2022) 211
Fulltext: PDF;
In : European Physics Society conference on High Energy Physics 2021, Online, Online, 26 - 30 Jul 2021, pp.211
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6.
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Measurement of the laser resonance ionization efficiency for lutetium
/ Gadelshin, Vadim Maratovich (Mainz U. ; Ekaterinburg, Inst. Metal Phys.) ; Heinke, Reinhard (Mainz U., Inst. Phys.) ; Kieck, Tom (Mainz U., Inst. Phys.) ; Kron, Tobias (Mainz U., Inst. Phys.) ; Naubereit, Pascal (Mainz U., Inst. Phys.) ; Rösch, Frank (Mainz U., Inst. Phys.) ; Stora, Thierry (CERN) ; Studer, Dominik (Mainz U., Inst. Phys.) ; Wendt, Klaus (Mainz U., Inst. Phys.)
The development of a highly efficient resonance ionization scheme for lutetium is presented. A laser ion source, based on the all-solid-state Titanium:sapphire laser system, was used at the 30 keV RISIKO off-line mass separator to characterize different possible optical excitation schemes in respect to their ionization efficiency. [...]
2019 - 9 p.
- Published in : Radiochim. Acta 107 (2019) 653-661
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7.
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Atom beam emersion from hot cavity laser ion sources
/ Heinke, R (Mainz U.) ; Fedosseev, V (CERN) ; Kieck, T (Mainz U.) ; Kron, T (Mainz U. ; Helmholtz Inst., Mainz) ; Marsh, B (CERN) ; Raeder, S (Helmholtz Inst., Mainz ; Darmstadt, GSI) ; Richter, S (Mainz U.) ; Rothe, S (CERN) ; Wendt, K (Mainz U.)
Ion sources exploiting laser resonance ionization offer efficient and element-selective radioactive ion beam production at the leading isotope separation on-line facilities worldwide. Most commonly, laser resonance ionization takes place inside a resistively heated atomizer tube directly coupled to the production target, where the element of interest is evaporated and provided as atomic vapor. [...]
2020 - 6 p.
- Published in : Nucl. Instrum. Methods Phys. Res., B 463 (2020) 449-454
In : 18th International Conference on Electromagnetic Isotope Separators and Related Topics, Geneva, Switzerland, 16 - 21 Sep 2018, pp.449-454
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8.
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High-resolution and low-background $^{163}$Ho spectrum: interpretation of the resonance tails
/ Velte, C (Kirchhoff Inst. Phys.) ; Ahrens, F (Kirchhoff Inst. Phys.) ; Barth, A (Kirchhoff Inst. Phys.) ; Blaum, K (Heidelberg, Max Planck Inst.) ; Braß, M (U. Heidelberg, ITP) ; Door, M (Heidelberg, Max Planck Inst.) ; Dorrer, H (Mainz U., Inst. Kernphys.) ; Düllmann, Ch E (Mainz U., Inst. Kernphys. ; Darmstadt, GSI ; Helmholtz Inst., Mainz) ; Eliseev, S (Heidelberg, Max Planck Inst.) ; Enss, C (Kirchhoff Inst. Phys.) et al.
The determination of the effective electron neutrino mass via kinematic analysis of beta and electron capture spectra is considered to be model-independent since it relies on energy and momentum conservation. At the same time the precise description of the expected spectrum goes beyond the simple phase space term. [...]
2019 - 8 p.
- Published in : Eur. Phys. J. C 79 (2019) 1026
External link: Fulltext
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9.
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Production, isolation and characterization of radiochemically pure 163Ho samples for the ECHo-project
/ Dorrer, Holger (Mainz U. ; Bern U. ; PSI, Villigen) ; Chrysalidis, Katerina (Mainz U.) ; Goodacre, Thomas Day (CERN ; Manchester U.) ; Düllmann, Christoph E (Mainz U. ; Darmstadt, GS) ; Eberhardt, Klaus (Mainz U.) ; Enss, Christian (Heidelberg U.) ; Gastaldo, Loredana (Heidelberg U.) ; Haas, Raphael (Mainz U.) ; Harding, Jonathan (Mainz U. ; Cardiff U.) ; Hassel, Clemens (Heidelberg U.) et al.
Several experiments on the study of the electron neutrino mass are based on high-statistics measurements of the energy spectrum following electron capture of the radionuclide $^{163}$Ho. They rely on the availability of large, radiochemically pure samples of $^{163}$Ho. [...]
2018 - 13 p.
- Published in : Radiochim. Acta 106 (2018) 535-547
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10.
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Laser resonance ionization spectroscopy on lutetium for the MEDICIS project
/ Gadelshin, V (Mainz U., Inst. Phys. ; Urals State U.) ; Cocolios, T (Leuven U.) ; Fedoseev, V (CERN) ; Heinke, R (Mainz U., Inst. Phys.) ; Kieck, T (Mainz U., Inst. Phys.) ; Marsh, B (CERN) ; Naubereit, P (Mainz U., Inst. Phys.) ; Rothe, S (CERN ; U. Manchester (main)) ; Stora, T (CERN) ; Studer, D (Mainz U., Inst. Phys.) et al.
The MEDICIS-PROMED Innovative Training Network under the Horizon 2020 EU program aims to establish a network of early stage researchers, involving scientific exchange and active cooperation between leading European research institutions, universities, hospitals, and industry. Primary scientific goal is the purpose of providing and testing novel radioisotopes for nuclear medical imaging and radionuclide therapy. [...]
2017 - 7 p.
- Published in : Hyperfine Interact. 238 (2017) 28
Preprint: PDF;
In : 10th International Workshop on Application of Lasers and Storage Devices in Atomic Nuclei Research : Recent Achievements and Future Prospects, Poznan, Poland, 16 - 19 May 2016, pp.28
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