Implementation of confocal setup in the LNLS using polycapillary optics

PEREZ, R.D; SÁNCHEZ H.J.; PEREZ, C.A.; RUBIO, M.

Campinas

Workshop; XIX Reunião Annual de Usuários. Laboratório Nacional de Luz Síncrotron; 2009

The confocal setup consists of x-ray lenses in the excitation as well as in the detection channel. In this configuration, a micro volume defined by the overlap of the foci of both x-ray lenses is analyzed. Scanning this micro volume through the sample, 1-3 dimensional studies can be performed. For intermediate thin homogeneous layers a scanning on the normal direction to the surface sample provides information of its thickness and composition. For multilayer samples it also provides the order of each layer in the stratified structure. For the confocal setup, we used a glass monocapillary in the excitation channel and a monolithic half polycapillary in the detection channel. The experiment was carried out at the D09B beamline of the LNLS using white beam. In the present work, application of the confocal micro-XRF in the biological samples and multilayers samples are described. Also preliminary results of confocal micro-XRD are shown.