Inner-shell absorption spectra of potassium fluoride clusters

Potassium K-shell absorption data of KF clusters obtained with a new cluste r source are presented. The clusters are trapped in rare gas matrices and a nalyzed with soft X-ray radiation provided by the DCI storage ring in Orsay . The inner-shell exciton lines of KF show distinct changes with the aggreg ate size, which can be used to identify their origin. Aggregates of smaller size are formed predominantly with nonstoichiometric compositions with pot assium in excess. (C) 1999 Elsevier Science B.V. All rights reserved.