Implementation of Confocal Setup in the LNLS Using Polycapillaries Optics

R.D. PÉREZ; H. J. SÁNCHEZ; C. A. PÉREZ; M. RUBIO

Campinas, Brasil

Congreso; RAU 19; 2009

The confocal setup consists of x-ray lenses in the excitation as well as in the detec-tion channel. In this configuration, a micro volume defined by the overlap of the fociof both x-ray lenses is analyzed. Scanning this micro volume through the sample,1-3 dimensional studies can be performed. For intermediate thin homogeneous lay-ers a scanning in the normal direction to the surface sample provides informationof its thickness and composition. For multilayer samples it also provides the orderof each layer in the stratified structure. For the confocal setup, we used a glassmonocapillary in the excitation channel and a monolithic half polycapillary in thedetection channel. The experiment was carried out at the D09B beamline of theLNLS using white beam. In the present work, application of the confocal μXRF inbiological samples and multilayer samples are described. Also preliminary resultsof confocal μXRD are shown.