Study of the first intershell (KLL) dielectronic recombination resonances for Be-, B-, and C-like xenon

Dielectronic recombination (DR) processes are very important processes in hot plasmas. Electron beam ion traps are excellent devices for experimentally disentangling the atomic physics processes occurring in hot plasmas. This work reports studies of the KLL DR processes for Be-, B-, and C-like xenon ions using the newly developed electron beam ion trap in Shanghai [X. Zhu et al., Nucl. Instrum. Methods Phys. Res. B 235, 509 (2005)]. X rays from the stabilization of the recombined ions were measured in a direction perpendicular to the electron beam. Angular variation coefficients of the stabilization transitions were calculated and used in the data analysis for extracting DR resonant strengths. The corresponding theoretical DR resonances were obtained, for comparison with the experimental results, based on relativistic configuration interaction approximation. (C) 2007 American Institute of Physics.