Tungsten samples have been irradiated with 3 MeV protons with dose rates of $1\times {10}^{-04}$ to $5\times {10}^{-05}$ dpa/s to doses of 0.01–0.67 dpa at 360 K in a pilot experiment. Micro- and macro-indentation were used to measure irradiation hardening in the samples. An initial irradiation hardening of 1.23 ± 0.09 GPa and 1.88 ± 0.83 GPa was measured by micro and macro indentation. The irradiation hardening was observed to saturate at 0.03 dpa damage. Dislocation loops were identified using TEM suggesting an increasing loop size with dose.

中文翻译：

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3 MeV质子辐照钨的压痕测试

钨样品已用3 MeV质子辐照，剂量率为 $\mathrm{1个}\times {10}^{--04}$ 至 $5\times {10}^{--05}$在先导实验中，在360 K时dpa / s的剂量为0.01–0.67 dpa。微观和宏观压痕用于测量样品中的辐射硬化。通过微观和宏观压痕测量，初始辐射硬化为1.23±0.09 GPa和1.88±0.83 GPa。观察到辐射硬化在0.03 dpa损伤下达到饱和。使用TEM鉴定了脱位环，提示环的大小随剂量增加而增加。