Comparing of method of x-radiation propagation through doe in paraxial area

A results of modeling of X radiation propagation through a zone plate by different calculating methods are described. A zone plate made of cuprum and silicon is considered. Modeling was calculated by 1D Fresnel conversion, 1D light non paraxial distribution, 2D integral Rayleight Zommerfeld, RSoft BeamProp from FullWave program, designed by RSoft Design Group, USA. It is shown, that first three methods have results very close each other. The result of modeling by BeamProp, differs about 10%.