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Modification of Ti foils irradiated by intense heavy ion beams
Radiation Effects and Defects in Solids ( IF 1 ) Pub Date : 2020-04-20 , DOI: 10.1080/10420150.2020.1756813
R. N. Sagaidak 1 , F. Sh. Abdullin 1 , O. L. Orelovich 1
Affiliation  

ABSTRACT Modification of Ti foils irradiated by intense energetic heavy ion (HI) beams in long-term experiments has been considered. The experiments on the synthesis of superheavy nuclei, which are carried out in Dubna with a gas-filled recoil separator (DGFRS), determine the conditions of such experiments. High intensities of HIs passing through a relatively small area and thickness of the foils, as well as their heating by a beam, are inherent in such experiments. The ability of the foils to withstand radiation damages, sputtering, and evaporation of atoms becomes questionable. All the processes seem to be dependent on temperature, and none of them is independent of the others, but they can be considered separately. In this work, sputtering yields are estimated on the grounds of available models and experimental data and compared with the results of measurements carried out to verify the estimates. The foil temperature, in turn, can be estimated in the conditions of pulse heating followed by subsequent cooling with radiation emitted from their surfaces. These conditions correspond to the rotating Ti entrance window irradiated by a continuous HI beam in the DGFRS experiments.

中文翻译:

强重离子束辐照钛箔的改性

摘要 在长期实验中,高能重离子 (HI) 束辐照钛箔的改性已被考虑。在杜布纳使用充气反冲分离器 (DGFRS) 进行的超重核合成实验确定了此类实验的条件。高强度的 HI 通过相对较小的面积和厚度的箔,以及它们被光束加热,是此类实验中固有的。箔承受辐射损伤、溅射和原子蒸发的能力变得有问题。所有的过程似乎都依赖于温度,没有一个是独立于其他的,但它们可以分开考虑。在这项工作中,溅射产额是根据现有模型和实验数据估算的,并与为验证估算而进行的测量结果进行比较。反过来,箔温度可以在脉冲加热的条件下估计,然后用从其表面发射的辐射进行冷却。这些条件对应于 DGFRS 实验中连续 HI 光束照射的旋转 Ti 入射窗。
更新日期:2020-04-20
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