Patent Number: 
Section: claims

1. An x-ray generating system comprising:a microfocusing source of x-ray radiation;a waveguide bundle optic for capturing the x-ray radiation produced by the microfocusing source, the waveguide bundle optic having an input for receiving x-ray radiation from the microfocusing source and an output for outputting a collimated, or convergent x-ray beam;a diffractive optic with a diffractive reflection surface for focusing the x-ray beam from the wave guide bundle optic to a focal point; andwherein a sample receives radiation from the diffractive reflection surface, the sample being located adjacent to the focal point. 2. The system of claim 1, wherein the waveguide bundle optic is a polycapillary optic. 3. The system of claim 1, wherein the said focusing optic is a Kirkpatrick-Baez side-by-side optic having multilayer Bragg x-ray reflecting surfaces. 4. The system of claim 3, wherein the said Kirkpatrick-Baez-Baez side-by-side optic has two elliptical reflectors. 5. The system of claim 3, wherein the said Kirkpatrick-Baez-Baez side-by-side optic has two parabolical reflectors. 6. The system of claim 3, wherein the said Kirkpatrick-Baez-Baez side-by-side optic has two hyperbolical reflectors. 7. The system of claim 3, wherein the said multilayer Bragg x-ray reflecting surfaces have graded-d spacing. 8. The system of claim 7, wherein the graded-d spacing is laterally graded. 9. The system of claim 7, wherein the graded-d spacing is both laterally graded and depth graded. 10. An x-ray generating system comprising:a microfocusing source of x-ray radiation;a waveguide bundle optic for capturing the x-ray radiation produced by the microfocusing source, the waveguide bundle optic having an input for receiving x-ray radiation from the source and an output for outputting a collimated, or convergent x-ray beam;a diffractive optic with a diffractive reflection surface for focusing the x-ray beam from the wave guide bundle optic to a focal point;wherein the waveguide optic is a bundle of carbon nanotubes; andwherein a sample receives radiation from the diffractive reflection surface, the sample being located adjacent to the focal point. 11. The system of claim 1, wherein the said focusing optic is a doubly curved optic having multilayer Bragg x-ray reflecting surface. 12. The system of claim 11, wherein the said doubly curved optic has an ellipsoidal surface. 13. The system of claim 11, wherein the said doubly curved optic has a paraboloidal surface. 14. The system of claim 11, wherein the said doubly curved optic has a hyperboloidal surface. 15. The system of claim 11, wherein the said multilayer Bragg x-ray reflecting surfaces have graded-d spacing. 16. The system of claim 15, wherein the graded-d spacing is laterally graded. 17. The system of claim 15, wherein the graded-d spacing is both laterally graded and depth graded. 18. The system of claim 1, further comprising an aperture for removing unused portions of the x-ray radiation, the aperture located between the said focusing optic and the focal point.