L- and M-shell-electron shake processes following 1s photoionization in argon and krypton

The photoinduced Kα and Kβ x-ray spectra of argon and krypton were measured by means of high-resolution crystal diffractometry. Ar Kα_1,2L⁽¹⁾ and Kβ_1,3M^(1,2) and Kr Kα₁L⁽¹⁾ and Kβ₂M^(1,2) satellites were observed and resolved from the corresponding diagram lines. From the satellite to parent diagram line yield ratios, the probabilities for producing via shake processes K⁽¹⁾L⁽¹⁾ and K⁽¹⁾M⁽¹⁾ double-hole states were deduced. The results are compared to the few other existing experimental data and to theoretical sudden approximation predictions. The latter are found to underestimate somewhat the experimental values.