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X-ray 3D tomography is So far limited to micron resolution because of thelarge focusing spot of the focused electron beam on the metal target. Here, weproposed a nanofocous X-ray 3D tomography system based on focused electronsfrom laser-cooled atoms in a nanoscale region of metal target in vacuum usefulfor 3D nanotomography and submicron volumetric imaging. We have shown thesystem has submicron resolution because of ability of focusing cold electronsto submicron size, the smaller the X-ray focal spot, the higher the resolutionwill be. In our system flux through the specimen of (photons/mm^2/s) can beimproved by sub-micron focusing of X-ray radiation as well. In contrast,synchrotrons and X-ray tubes provide intense radiation beams, however, theseattributes are not necessary for microtomography and the proposedsub-microfocus source compares favorably with respect to the radiation fluxbecause of ability of sub-micron focusing of electrons from near-thresholdphotoionizing laser cooled atoms.

High resolution nanofocus X-ray source based on ultracold electrons from laser cooled-atoms