AUGER DECAY PROCESSES OF RESONANTLY EXCITED 3D(-1)4F CONFIGURATION OFXENON-LIKE IONS IN SOLIDS

The synchrotron-radiation-induced Auger and photoelectron spectra of x enon-like ions I- and Cs+ (in Cs+), Ba2+ (in BaF2), and La3+ (in LaF3) have been measured in the vicinity of the M45 absorption edges of the se ions. It is shown that the spectra of La and Ba excited at 3d10 --> 3d(9)4f resonances exhibit a very intense 4f-spectator structure whic h changes its energy and intensity with energy of excited photons. Cal culation of the Auger decay of the 3d(-1)4f configuration shows that t his structure is due to transitions to the 4d(-2)4f + 4p-1 final ionic configuration which high-energy part, is overlapped with the 4d(-2) c ontinuum. In the case of Ba this structure coexist with the normal Aug er structure which appears as a result of the M4M5N67 Coster-Kronig tr ansitions. The spectra of I- contain only the normal M45N45N45 Auger c omponents. The spectra of Cs+ are similar to those of I- with a small admixture of the 4f-spectator-like structure. The anomalous behaviour of the intensity ratio of 4d3/2 and 4d5/2 photolines of La and Ba at t he resonance excitation energies is found and attributed to the strong term dependence of the participator Auger process.