Spectra and energy levels of Br xxv, Br xxix, Br xxx, and Br xxxi

Abstract

Emission lines of highly ionized bromine in the wavelength region 17–93 Å have been identified in spectra recorded at the University of Rochester’s OMEGA laser facility. The wavelengths of 2s–2p transitions in nitrogenlike Br xxix, carbonlike Br xxx, and boronlike Br xxxi are presented. The wavelengths of the magnetic dipole transitions within the 2s²2p³ ground configurations of Br xxix are predicted from the experimental energy levels. Transitions from the n = 4 and 5 levels of sodiumlike Br xxv were also identified, and the ionization energy of Br xxv was determined to be 9 027 600 ± 2000 cm⁻¹ (1119.3 ± 0.2 eV).