Experimental determination of the phase differences of continuum wavefunctions describing the photoionisation process of xenon atoms. II. Evaluation of the matrix elements and the phase differences and their comparison with data in the discrete spectral range in application of the multichannel quantum defect theory

Abstract

Abstract. The photoionisation of xenon is completely described by the knowledge of either three or five parameters, corresponding respectively to the 'Pl,z and *P3/2 states of the ion, and their dependence on photon energy. In the photon energy range from 12 to 41 eV two of these have been experimentally determined from measurements of the spin polarisation of photoelectrons emitted by unpolarised and circularly polarised vuv radiation. After a description of the apparatus used the measured results are presented and compared with different theoretical results.

Complete description of 3p photoionization in calcium

“…the matrix elements and their relative phases. This approach was then applied very successfully to many other systems (Heinzmann andCherepkov 1996, Snell et al 1997). However, different methods are being searched for to avoid the difficulties of the spin-polarization measurements and to replace these by some other technique, although these alternative approaches require specific properties of the system under study, i.e.…”

Effect of Relativistic Many-Electron Interactions on Photoelectron Partial Wave Probabilities

“…These interactions manifest themselves through the production of quartet states in the residual excited ion of closed shell atoms [7 -9], spin polarization of emitted electrons [10,11], and as we have shown in an earlier Letter [12], through the orientation of the 2 P o 1͞2 state of the residual Ar 1 . In these processes, a complete determination of the partial wave probabilities of the photoelectron is especially important for a detailed understanding of relativistic dynamics.…”

X-Ray Absorption and Experiments with Circularly Polarized Radiation

“…This has been well known from the photoionization of free atoms and molecules for more than a decade [5,14,[22][23][24]. Spin-orbit interaction is required and the spin polarization is due to an interference of continuum wave functions.…”