Investigating radioactive negative ion production via double electron capture

• DOI: 10.1016/j.nimb.2023.04.051
• Publication Date: 2023-05-27T11:23:38Z
• Authors: M. Nichols; M. Athanasakis-Ka...; A. Borschevsky; T.E. Cocolios; R. Crosa-Rossa; R.P. de Groote; K.T. Flanagan; R.F. Garcia Ruiz; S. Geldhof; D. Hanstorp; Á. Koszorús; L. Lalanne; D. Leimbach; G. Neyens; J. Reilly; S. Rothe; S.G. Wilkins; X.F. Yang
• Keywords: Electron capture

The relative cross sections for radioactive negative ion production via double electron capture have been measured collisions between a 40 keV projectile beam of uranium-238 and potassium vapor. This was performed at the collinear resonance ionization spectroscopy (CRIS) experiment CERN-ISOLDE is step towards measuring affinities (EAs) elements that cannot be efficiently produced in sources (RIB) facilities. includes short-lived isotopes low quantities heavy superheavy systematically smaller EAs than work functions available source materials. Negative ions are particularly sensitive to electron–electron correlation effects, which make such studies ideal benchmarking atomic structure models go beyond independent particle model. While most light measured, experimental investigations on heavier elements, namely actinides, remain scarce due their nature difficulty. By developing by charge exchange, we aim these feasible RIB