Jiang Qi-Li, Duan Ze-Ming, Shuai Qi-Lin, Li Rong-Wu, Pan Qiu-Li, Cheng Lin. A new type of micro-X-ray diffractometer focused by polycapillary opticsJ. Acta Physica Sinica, 2019, 68(24): 240701. DOI: 10.7498/aps.68.20190497