Characterization of Homemade X-Ray Polycapillaries

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

X-RAY SPECTROMETRY

Año: 2008 vol. 37 p. 646 - 651

0049-8246

The possibilities of performing non-destructive elemental microanalysis withsynchrotron radiation by means of home-made polycapillary optics are described.Monolithic polycapillary half-lenses using fiber glass technology were made by drawingpackages of glass capillaries at high temperature in a heating furnace. The performance ofpolycapillary half-lenses with different geometries was evaluated. A gold knife-edgescanned at the output of the lenses was used to determine the spot size at differentdistances. Measurements of photon flux impinging on the entrance end of the lenses andphoton flux leaving the lenses were used to obtain the transmission efficiency. Thepolycapillary half-lens made in our laboratory were used in a series of XRF microanalysistests using white beam. The overall efficiency of the system was studied by means ofestablishing detection limits for various elements in an organic sample.