Photoionization of CH4, SiH4, BH3 and AlH3 by the B-spline one-centre expansion density functional method

The photoionization cross-section and asymmetry parameter profiles of CH4, SiH4, BH3 and AlH3 have been calculated with a density functional method. T he basis set consists of a one centre expansion of B-splines. The ionizatio n of all the orbitals has been studied, from the outer valence up to the co re Is. Comparison with available experimental and theoretical data have bee n performed when possible. The discussion is mainly based on the general tr ends due to the chemical environment, and is grounded on a previous work on the other hydrides calculated with the same method. (C) 1999 Elsevier Scie nce B.V. All rights reserved.