title: Effective increase in beam emittance by phase-space expansion using asymmetric Bragg diffraction.
abstract: We propose an innovative method to extend the utilization of the phase space downstream of a synchrotron light source for X-ray transmission microscopy. Based on the dynamical theory of X-ray diffraction, asymmetrically cut perfect crystals are applied to reshape the position-angle-wavelength space of the light source, by which the usable phase space of the source can be magnified by over one hundred times, thereby "phase-space-matching" the source with the objective lens of the microscope. The method's validity is confirmed using SHADOW code simulations, and aberration through an optical lens such as a Fresnel zone plate is examined via matrix optics for nano-resolution X-ray images.
authors.forename: Chia-Hung
authors.initials: CH
authors.lastname: Chu
authors.forename: Mau-Tsu
authors.initials: MT
authors.lastname: Tang
authors.forename: Shih-Lin
authors.initials: SL
authors.lastname: Chang