L-shell shake processes resulting from 1s photoionization in elements 11 <= Z <= 17 - art. no. 062508

The photoinduced K alpha x-ray spectra of elements between sodium and chlor ine were measured by means of high-resolution crystal diffractometry. The K alpha (1,2),L-(1) satellites were observed and resolved from the correspon ding diagram lines. The probabilities for producing via shake processes (KL (1))-L-(1) double-hole states were deduced from the satellite to parent dia gram line yield ratios. The results are compared to theoretical sudden appr oximation predictions. A satisfactory agreement is found except for sodium and chlorine for which our experimental results are markedly underestimated by the calculations.