Dielectronic recombination of He-like to C-like iodine ions

Abstract

KLL dielectronic recombination resonances, where a free electron is captured into the L shell and at the same time a K shell electron is excited into the L shell, have been measured for open shell iodine ions by measuring the detected yield of escaping ions of various charge states and modeling the charge balance in an electron beam ion trap. In the modeling, the escape from the trap and multiple charge exchange were considered. Extracted ions were used to measure the charge balance in the trap. The different charge states were clearly separated, which along with the correction for artifacts connected with ion escape and multiple charge exchange made the open shell highly charged ion measurements of this type possible for the first time. From the measured spectra resonant strengths were obtained. The results were 4.27͑39͒ ϫ

Theoretical study of the KLL dielectronic recombination for highly charged iodine ions

“…The DR process is important in high-temperature plasmas, where it strongly affects both the charge state distribution and the X-ray spectrum [2][3][4][5][6]. X-ray radiation from the DR process can also be used as a diagnostic tool.…”

KLL Dielectronic Recombination of Highly Charged Sulfur and Silicon Ions

“…In the calculations, all possible decay paths were taken into account, including radiative decay to lower doubly excited states and autoionizing decay to excited states. Previously, an empirical formula was given by Watanabe et al [18] to estimate the DR resonant strength of He-like isoelectronic sequence by defining the radiative transition rate ( ), the autoionization rate ( ), and the resonance energy ( ) in terms of their dependence:…”

Resonant recombination at ion storage rings: a conceptual alternative for isotope shift and hyperfine studies

“…Early work on recombination of atomic ions can be found in [7]. An overview about the storage ring experiments can be found in [8], and about recent work performed at EBITs in [9][10][11][12].…”