Search

• The electron correlation model was constructed for double K hole states of highly charged Xe q + ions. • The multi-configuration Dirac-Hartree-Fock method was used with electron correlation, Breit and QED effects corrections. • The spectator electron effects on the transition energy shift was determined to be 240 eV per 2p spectator electron. • The synthetic spectrum of the bare Xe ions interacting with carbon target were provided. The double electron E1 transition energies, probabilities, and oscillator strengths between the 2 s 2 p n and 1 s 2 2 p n − 1 (1 ≤ n ≤ 6) configurations of Xe q + (47 ≤ q ≤ 52) ions with different spectator electrons have been calculated based on the multi-configuration Dirac-Hartree-Fock method. A reasonable electron correlation model is constructed with the aid of the active space method. The finite mass of nuclear, Breit interaction and QED effects have also been included. The calculated results are in good agreement with the available data. The theoretical spectra of different spectator electrons of the double K hole state have been predicted. The spectator electron effects on the transition spectra have been analyzed in detail. The present results will be helpful for analyzing the high energy X-ray spectrum observed from the interaction between high energy highly charged ions and the surface. [ABSTRACT FROM AUTHOR]