STATIONARY CRYSTAL DIFFRACTION WITH A MONOCHROMATIC CONVERGENT X-RAY SOURCE AND APPLICATION FOR MACROMOLECULAR CRYSTAL DATA-COLLECTION

A diffraction geometry utilizing convergent X-rays from a polycapillar y optic incident on a stationary crystal is described. A mathematical simulation of the resulting diffraction pattern tin terms of spot shap e, position and intensity) is presented along with preliminary experim ental results recorded from a lysozyme crystal. The effective source c overage factor is introduced to bring the reflection intensities onto the same scale. The feasibility of its application to macromolecular c rystal data collection is discussed.