一种材料最低离位阈能的确定方法和装置

• Format: Patent
• Language: Chinese
• Published: 16.04.2024
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

本发明公开了一种材料最低离位阈能的确定方法和装置，方法包括当接收到金属材料被电子束辐照前后的电阻率变化数据时，根据电阻率变化数据计算实验离位损伤截面，计算金属材料对应的电子散射微分截面，按照金属材料的最低离位阈能取值范围按照预设的阈能步长划分为多个待定离位阈能，基于金属材料对应的平均离位阈能、电子散射微分截面和各待定离位阈能，分别确定金属材料对应的理论离位损伤截面，根据实验离位损伤截面和各理论离位损伤截面，从多个待定离位阈能中选取金属材料的最低离位阈能。从而减少电子束辐照的能量范围需求，同时在电子束辐照剂量较小的情况下仍然可以精确最低离位阈能，有效提高最低离位阈能的确定精度。 The invention discloses a method and device for determining the lowest off-location threshold energy of a material, and the method comprises the steps: calculating an experiment off-location damage section according to the resistivity change data when the resistivity change data of a metal material before and after being irradiated by an electron beam is received, and calculating an electron scattering differential section corresponding to the metal material; dividing the metal material into a plurality of undetermined dislocation threshold energies according to a preset threshold energy step length according to a minimum dislocation threshold energy value range of the metal material, and respectively determining a theoret