Multiple photoionization of Ar in the K-edge region: New results

Single and multiple photoionization branching ratios of Ar have been measured for photon energies around the K-edge region between 3198 and 3212 eV using synchrotron radiation and time-of-flight mass spectrometry. The present data is normalized to the absolute values using the accurately measured data of Zheng et al. [L. Zheng, M. Cui, Y. Zhao, K. Chen, J. Electron. Spectrosc. Rel. Phenom. 152 (2006) 143-147]. A comparison with other experimental and theoretical data is presented and discrepancies are discussed.