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采用重离子辐照模拟方法和正电子湮没寿命测量技术研究了钨辐射损伤随辐照剂量的变化。20,60和90 dpa(每个原子的位移次数)辐照损伤水平的实验结果表明,辐照在钨中产生单空位、双空位、位错和空位团等缺陷;随辐照剂量的增大,单空位、双空位和位错浓度增加,空位团的尺度和浓度都随之增大。
The changes of irradiation dose of tungsten irradiation were studied by heavy ion irradiation simulation and positron annihilation lifetime measurement. The experimental results of irradiation damage levels of 20, 60 and 90 dpa (number of displacement per atom) show that the irradiation produces defects such as single vacancy, double vacancy, dislocation and vacancy in tungsten. With the increase of irradiation dose , Single vacancy, double vacancies and dislocation concentration increased, the size and concentration of vacancies are increased.