公开(公告)号：US20210333224A1

公开(公告)日：2021-10-28

申请号：US16626572

申请日：2019-05-29

申请人： NUCTECH COMPANY LIMITED ,  TSINGHUA UNIVERSITY

发明人： Yigang YANG ,  Xuewu WANG ,  Zhi ZHANG ,  Yuanjing LI ,  Jianmin LI

IPC分类号： G01N23/09 ,  G01N23/02 ,  G01N23/05 ,  G01N23/083

摘要： The present disclosure provides a dual mode detection method, controller and system, which relates to the technical field of radiation detection. The dual mode detection method of the present disclosure includes: determining a ratio of neutron to X-ray differential cross sections of an inspected object, according to X-ray object detection data, X-ray object-free detection data, neutron object detection data, and neutron object-free detection data; determining a substance type of the inspected object according to a correspondence between the ratio of neutron to X-ray differential cross sections of the inspected object and the substance type.

公开(公告)号：US20210223416A1

公开(公告)日：2021-07-22

申请号：US16314048

申请日：2018-12-11

申请人： Tsinghua University ,  Nuctech Company Limited

发明人： Yulan LI ,  Hong LI ,  Jianping CHANG ,  Zhi ZHANG ,  Jianmin LI

IPC分类号： G01T1/24 ,  C30B29/08 ,  G01T1/36

摘要： The present disclosure provides a high purity germanium detector. The high purity germanium detector includes: an array of high purity germanium crystal units including two or more high purity germanium crystal units, wherein, each of the two or more high purity germanium crystal units comprises a partial electrode on a side surface and/or a first top surface, and the electrodes on the side surfaces and/or the first top surfaces of the two or more high purity germanium crystal units are electrically connected together to form a first contact electrode of the high purity germanium detector; and each of the high purity germanium crystal units comprises a respective second contact electrode therein, such that the high purity germanium detector comprises two or more second contact electrodes.