| Article | |
| Report number | arXiv:2303.12226 |
| Title | Production of neptunium and plutonium nuclides from uranium carbide using 1.4-GeV protons |
| Author(s) | Au, M. (CERN ; Mainz U.) ; Athanasakis-Kaklamanakis, M. (CERN ; Leuven U.) ; Nies, L. (CERN ; Greifswald U.) ; Heinke, R. (CERN) ; Chrysalidis, K. (CERN) ; Köster, U. (CERN ; Laue-Langevin Inst.) ; Kunz, P. (TRIUMF) ; Marsh, B. (CERN) ; Mougeot, M. (CERN ; Heidelberg, Max Planck Inst.) ; Schweikhard, L. (Greifswald U.) ; Stegemann, S. (CERN) ; Gracia, Y. Vila (CERN) ; Düllmann, Ch.E. (Mainz U. ; Darmstadt, GSI ; Helmholtz Inst., Mainz) ; Rothe, S. (CERN) |
| Publication | 2023-06-08 |
| Imprint | 2023-03-21 |
| Number of pages | 12 |
| Note | 12 pages, 12 figures |
| In: | Phys. Rev. C 107 (2023) 064604 |
| DOI | 10.1103/PhysRevC.107.064604 (publication) |
| Subject category | nucl-ex ; Nuclear Physics - Experiment |
| Abstract | Accelerator-based techniques are one of the leading ways to produce radioactive nuclei. In this work, the Isotope Separation On-Line method was employed at the CERN-ISOLDE facility to produce neptunium and plutonium from a uranium carbide target material using 1.4-GeV protons. Neptunium and plutonium were laser-ionized and extracted as 30-keV ion beams. A Multi-Reflection Time-of-Flight mass spectrometer was used for ion identification by means of time-of-flight measurements as well as for isobaric separation. Isotope shifts were investigated for the 395.6-nm ground state transition in $^{236,237,239}$Np and the 413.4-nm ground state transition in $^{236,239,240}$Pu. Rates of $^{235-241}$Np and $^{234-241}$Pu ions were measured and compared with predictions of in-target production mechanisms simulated with GEANT4 and FLUKA to elucidate the processes by which these nuclei, which contain more protons than the target nucleus, are formed. $^{241}$Pu is the heaviest nuclide produced and identified at a proton-accelerator-driven facility to date. We report the availability of neptunium and plutonium as two additional elements at CERN-ISOLDE and discuss the limit of accelerator-based isotope production at high-energy proton accelerator facilities for nuclides in the actinide region. |
| Copyright/License | publication: © 2023-2024 authors (License: CC-BY-4.0) preprint: (License: CC BY 4.0) |
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Запись создана 2023-04-21, последняя модификация 2024-05-08