Eur. Phys. J. D 1, 47-52 (1998)
https://doi.org/10.1007/s100530050062

Vacuum ultraviolet photoionization of the 5d elements in the region of the 5p and 4f excitation

Institut für Atomare und Analytische Physik, Technische Universität, Hardenbergstr. 36, 10623 Berlin, Germany

Corresponding author: ^a kit@atom.physik.tu-berlin.de

Received: 9 October 1997
Accepted: 3 November 1997
Published online: 15 January 1998

Abstract

The results of recent VUV photoionization experiments of the 5d elements Ta, W, Re, Ir and Pt using atomic beam technique, excitation with monochromatized synchrotron radiation and detection of singly and doubly charged photoions are discussed. Special attention is given to the resonances caused by discrete transitions of the 5p and 4f electrons into the unfilled 5d subshells. As there is a crossover of the 5p and 4f levels along the series of the 5d elements the result is a complicated structure of the corresponding interacting resonances. The photoion spectra are compared with theoretical calculations carried out within the relativistic time dependent local density and the relativistic Hartree-Fock approximation.