In-source and in-trap formation of molecular ions in the actinide mass range at CERN-ISOLDE

Au, M.; Athanasakis-Kaklamanakis, Michail; Nies, L.; Ballof, J.; Berger, R.; Chrysalidis, K.; Fischer, Paul; Heinke, Reinhard; Johnson, Jake D.; Köster, U.; Leimbach, David; Marsh, B. A.; Mougeot, Maxime; Reich, Barbara; Reilly, J.J.; Schlaich, M.; Schweiger, Ch.; Schweikhard, L.; Stegemann, S.; Wessolek, J.; Wienholtz, F.; Wilkins, S. G.; Wojtaczka, W.; Düllmann, Ch. E.; Rothe, S.

doi:10.1016/j.nimb.2023.05.015

Cited by 7 publications

(3 citation statements)

References 13 publications

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“…Extraction of radioisotopes from the target in a molecular form can provide a solution to the slow release of actinium but only if effusion time is greater than the diffusion time. Furthermore, the additional mass shift of the molecule helps with the suppression of isobaric contaminants as some elements in a molecule cannot form an ion in certain conditions 28 . An alternative way to increase the extractable production yield of some isotopes is by changing the target material.…”

Section: Yieldsmentioning

confidence: 99%

Production study of Fr, Ra and Ac radioactive ion beams at ISOLDE, CERN

Jajčišinová,

Dockx,

et al. 2024

Preprint

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The presented paper discusses the production of radioactive ion beams of francium, radium, and actinium from thick uranium carbide (UC x) 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 222−231 Ac, 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.

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Section: Yieldsmentioning

confidence: 99%

Production study of Fr, Ra and Ac radioactive ion beams at ISOLDE, CERN

Jajčišinová,

Dockx,

et al. 2024

Preprint

Self Cite

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show abstract

“…Extraction of radioisotopes from the target in a molecular form can provide a solution to the slow release of actinium but only if effusion time is greater than the diffusion time. Furthermore, the additional mass shift of the molecule helps with the suppression of isobaric contaminants as some elements in a molecule cannot form an ion in certain conditions 29 . An alternative way to increase the extractable production yield of some isotopes is by changing the target material.…”

Section: Release Curves and Yieldsmentioning

confidence: 99%

Production study of Fr, Ra and Ac radioactive ion beams at ISOLDE, CERN

Jajčišinová,

Dockx,

et al. 2024

Sci Rep

Self Cite

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The presented paper discusses the production of radioactive ion beams of francium, radium, and actinium from thick uranium carbide (UC$$_{x}$$ x ) 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 $$\mu$$ μ C are presented for $$^{222-231}$$ 222 - 231 Ac, several Ra and Fr isotopes in the mass ranges 214$$\le$$ ≤ A$$\le$$ ≤ 233 and 205$$\le$$ ≤ A$$\le$$ ≤ 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.

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“…Hence, experimental initiatives to measure nuclear Schiff moments with radioactive molecules often consider atom and ion traps as well as embedding them inside cryogenic solids to extend the coherence and observation time of the available samples. Moreover, studies have been initiated to optimize the efficient formation of these molecules [46], to obtain colder samples, e.g. via direct laser cooling, sympathetic cooling with co-trapped laser-coolable ions [47] (or atoms), or formation of molecules starting from ultra-cold atoms themselves [48].…”

Section: (A) Edm Searches With Radioactive Moleculesmentioning

confidence: 99%

Experimental perspectives on the matter–antimatter asymmetry puzzle: developments in electron EDM and H¯ experiments

Comparat,

Malbrunot,

Malbrunot-Ettenauer

et al. 2023

Phil. Trans. R. Soc. A.

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In the search for clues to the matter–antimatter puzzle, experiments with atoms or molecules play a particular role. These systems allow measurements with very high precision, as demonstrated by the unprecedented limits down to 10 − 30 e cm on electron EDM using molecular ions, and relative measurements at the level of 10 − 12 in spectroscopy of antihydrogen atoms. Building on these impressive measurements, new experimental directions offer potential for drastic improvements. We review here some of the new perspectives in those fields and their associated prospects for new physics searches. This article is part of the theme issue ‘The particle-gravity frontier’.

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In-source and in-trap formation of molecular ions in the actinide mass range at CERN-ISOLDE

Cited by 7 publications

References 13 publications

Production study of Fr, Ra and Ac radioactive ion beams at ISOLDE, CERN

Production study of Fr, Ra and Ac radioactive ion beams at ISOLDE, CERN

Production study of Fr, Ra and Ac radioactive ion beams at ISOLDE, CERN

Experimental perspectives on the matter–antimatter asymmetry puzzle: developments in electron EDM and H¯ experiments

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