Abstract
The presented paper discusses the production of radioactive ion beams of francium, radium, and actinium from thick uranium carbide (UCx) targets at ISOLDE, CERN. This study focuses on the release curves and extractable yields of francium, radium and actinium isotopes. The ion source temperature was varied in order to study the relative contributions of surface and laser ionization to the production of the actinium ion beams. The experimental results are presented in the form of release parameters. Representative extractable yields per μC are presented for 222-231Ac, several Ra and Fr isotopes in the mass ranges 214≤A≤233 and 205≤A≤231 respectively. The release efficiency for several isotopes of each of the studied elements was calculated by comparing their yields to the estimated in-target production rates modeled by CERN-FLUKA. The maximal extraction efficiency of actinium was calculated to be 2.1(6)% for a combination of surface ionization using a Ta ion source and resonant laser ionization using the two-step 438.58 nm, and 424.69 nm scheme.
Original language | English |
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Article number | 11033 |
Number of pages | 9 |
Journal | Scientific Reports |
Volume | 14 |
Issue number | 1 |
DOIs | |
State | Published - Apr 2024 |
Funding
The authors would like to acknowledge all those who participated in the data collection at the IS637 experiment. Furthermore, we would like to thank the ISOLDE Collaboration and technical teams for providing excellent beams and the GSI Target Laboratory for the carbon foils used in the campaign. This work has received funding from the European Commission under Horizon 2020, Marie Sklodowska Curie Actions, ITN contracts No. 642889 (MEDICIS-Promed) and No. 861198 (LISA), Horizon 2020 research and innovation programme contracts No. 654002 (ENSAR2) and No. 101008571 (PRISMAP), ERC Consolidator Grant No. 771036 (MAIDEN) and No. 101088504 (NSHAPE), from the Research Foundations Flanders (FWO, Belgium), from KU Leuven (STG/15/031, C14/22/104), from the Science and Technology Facilities Council grant ST/P004423/1 and from the Academy of Finland grant No. 354968. E.J. acknowledges the support of the Collaborative Doctoral Partnership of the Joint Research Centres of the European Commission No. 35332 between JRC Karlsruhe and KU Leuven. S.B. acknowledges the support of the FWO Fellowship. The authors would like to acknowledge all those who participated in the data collection at the IS637 experiment. Furthermore, we would like to thank the ISOLDE Collaboration and technical teams for providing excellent beams and the GSI Target Laboratory for the carbon foils used in the campaign. This work has received funding from the European Commission under Horizon 2020, Marie Sklodowska Curie Actions, ITN contracts No.\u00A0642889 (MEDICIS-Promed) and No.\u00A0861198 (LISA), Horizon 2020 research and innovation programme contracts No.\u00A0654002 (ENSAR2) and No. 101008571 (PRISMAP), ERC Consolidator Grant No.\u00A0771036 (MAIDEN) and No.\u00A0101088504 (NSHAPE), from the Research Foundations Flanders (FWO, Belgium), from KU Leuven (STG/15/031, C14/22/104), from the Science and Technology Facilities Council grant ST/P004423/1 and from the Academy of Finland grant No.\u00A0354968. E.J. acknowledges the support of the Collaborative Doctoral Partnership of the Joint Research Centres of the European Commission No.\u00A035332 between JRC Karlsruhe and KU Leuven. S.B. acknowledges the support of the FWO Fellowship.
Funders | Funder number |
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Horizon Europe | |
Fonds Wetenschappelijk Onderzoek | |
GSI Helmholtzzentrum für Schwerionenforschung | |
CERN - Conseil Européen pour la Recherche Nucléaire | 861198 |
EUROfusion | 101008571, 654002, ENSAR2 |
STFC - Science and Technology Facilities Council | ST/P004423/1 |
KU Leuven | C14/22/104, STG/15/031 |
ASJC Scopus subject areas
- General