title: Focal construct geometry for high intensity energy dispersive x-ray diffraction based on x-ray capillary optics.
abstract: We presented a focal construct geometry (FCG) method for high intensity energy dispersive X-ray diffraction by utilizing a home-made ellipsoidal single-bounce capillary (ESBC) and a polycapillary parallel X-ray lens (PPXRL). The ESBC was employed to focus the X-rays from a conventional laboratory source into a small focal spot and to produce an annular X-ray beam in the far-field. Additionally, diffracted polychromatic X-rays were confocally collected by the PPXRL attached to a stationary energy-resolved detector. Our FCG method based on ESBC and PPXRL had achieved relatively high intensity diffraction peaks and effectively narrowed the diffraction peak width which was helpful in improving the potential d-spacing resolution for material phase analysis.
authors.affiliation: The Key Laboratory of Beam Technology and Materials Modification of the Ministry of Education, Beijing Normal University, Beijing 100875, China.
authors.forename: Fangzuo
authors.initials: F
authors.lastname: Li
authors.affiliation: The Key Laboratory of Beam Technology and Materials Modification of the Ministry of Education, Beijing Normal University, Beijing 100875, China.
authors.forename: Zhiguo
authors.initials: Z
authors.lastname: Liu
authors.affiliation: The Key Laboratory of Beam Technology and Materials Modification of the Ministry of Education, Beijing Normal University, Beijing 100875, China.
authors.forename: Tianxi
authors.initials: T
authors.lastname: Sun
authors.affiliation: The Key Laboratory of Beam Technology and Materials Modification of the Ministry of Education, Beijing Normal University, Beijing 100875, China.
authors.forename: Bowen
authors.initials: B
authors.lastname: Jiang
authors.affiliation: The Key Laboratory of Beam Technology and Materials Modification of the Ministry of Education, Beijing Normal University, Beijing 100875, China.
authors.forename: Yu
authors.initials: Y
authors.lastname: Zhu