Wavelengths and energy levels of Xe V and Xe VI obtained by collision-based spectroscopy

We have utilized collision-based spectroscopy to investigate the spectra of Xe V and Xe VI. The radiation emitted following electron capture by 50 keV Xe 5+ and 60 keV Xe 6+ ions impinging on a He (Ar) gas target has been recorded in the 350–6000 (1200–2500) Å wavelength region. A number of new energy levels of Xe V and Xe VI have been established from lines identified by us. In particular, we have observed and identified transitions from the 5s 2 5p4f (5s 2 4f) configuration of Xe V (Xe VI). The analysis was supported by Hartree–Fock calculations.