Calculation of Capillary Parameters for the Characterization of X-Ray Microbeams

H. J. SÁNCHEZ; C. A. PÉREZ

JOURNAL OF TRACE AND MICROPROBE TECHNIQUES

Taylor and Francis

Año: 1998 vol. 16 p. 501 - 510

0733-4680

In this work, parameters such as transmission efficiency and intensity gain are calculated for different energies, geometrical shapes and capillary dimensions. These parameters are obtained by using a mathematical model which calculates photon transport along these devices. The model assumes the usage of a monochromatic radiation source with similar characteristics to those of synchrotron light, that is, a very small source with a low angular divergence. Due to the cylindrical symmetry presented by the problem, the mathematical description of the capillaries is a two-dimensional model represented by two curves which determine the capillary profile. In this work we have adopted the mathematical representation of the capillary profiles by means of straight segments which simulate the theoretical curve of the profile. The results obtained show interesting characteristics and are in good agreement with the models proposed by other authors.