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Surface modification and deuterium retention of tungsten films under low energy deuterium ion irradiation
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms ( IF 1.3 ) Pub Date : 2020-09-06 , DOI: 10.1016/j.nimb.2020.08.016
Liangcheng Cui , Bin Zhang , Liqun Shi , Hanjun Tu

Tungsten (W) films prepared by radio frequency (RF) magnetron sputtering at 1 Pa, 3 Pa, and 5 Pa were irradiated by low-energy (50 eV, 300 eV, and 600 eV) deuterium ions at room temperature (RT), 573 K and 873 K, with fluences ranging from 3.2 × 1022/m2 to 9.0 × 1022/m2. Exfoliation was observed in the W film deposited at 1 Pa after irradiation of RT, 3.2 × 1022/m2, 300 eV D+. W films prepared at 5 Pa suffered the irradiation of different fluences, energies, and temperatures without degradation. SEM showed granules appearing and a rougher surface after irradiation. Irradiation energy, fluence and temperature played critical roles in D retention of tungsten. ERD showed D retention initiated and increased with increasing energies from 50 eV to 600 eV and with increasing fluences from 3.2 × 1022/m2 to 9.0 × 1022/m2, whereas nearly no D retention occurred in the W film irradiated at 873 K.



中文翻译:

低能氘离子辐照下钨膜的表面改性和氘保留

在室温(RT)下,通过低能(50 eV,300 eV和600 eV)氘离子辐照通过射频(RF)磁控溅射在1 Pa,3 Pa和5 Pa下制备的钨(W)膜, 573 K和873 K,通量范围为3.2×10 22 / m 2到9.0×10 22 / m 2。剥离是在RT的照射之后沉积在1Pa W膜观察到的,3.2×10 22 /米2,300电子伏特d +。在5 Pa下制备的W膜经受了不同注量,能量和温度的辐射而没有降解。SEM显示出辐射后出现颗粒并且表面更粗糙。辐照能量,能量密度和温度在钨的D保留中起关键作用。ERD显示,随着能量从50 eV增加到600 eV,能量密度从3.2×10 22 / m 2增加到9.0×10 22 / m 2,D保留开始并增加,而在873辐照的W膜中几乎没有D保留发生。 K.

更新日期:2020-09-07
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