论文标题
实验方法对薄膜中光keV离子观察到的电子能量损失的影响
Impact of the experimental approach on the observed electronic energy loss for light keV ions in thin self-supporting films
论文作者
论文摘要
在单个实验中，记录了具有50 keV和100 keV与自支撑箔相互作用的反向散射和传输离子与自支撑箔相互作用的100 keV的能量光谱。使用了不支持背部材料的自支撑Au和W箔。因为通过AU传输的离子检测到的颗粒谱显示了与膜中不同能量损失相对应的两个不同的成分，而对于质子，未观察到这种现象。为了确定这些不同贡献的起源，已经评估了针对不同入射角和散射角度的测量。结果表明，传输频谱中的两个成分可能归因于影响参数依赖性能量损失，而与质子相比，HE离子更为突出。必要的影响参数沿不同离子轨迹选择的主要起源预计将是AU翼构成的纹理。
Energy spectra of backscattered and transmitted ions with primary energies of 50 keV and 100 keV interacting with self-supporting foils were recorded with a Time-of-Flight Medium-Energy Ion Scattering setup in a single experiment. Self-supporting Au and W foils without backing material were used. For He ions transmitted through Au the spectrum of detected particles shows two distinct components corresponding to different energy losses in the film, whereas for protons no such phenomenon was observed. To determine the origin of these different contributions, measurements for different angles of incidence and scattering angles have been evaluated. The results suggest that the two components in the spectrum of transmitted He ions could be attributed to impact parameter dependent energy loss, being more prominent for He ions than for protons. The main origin of the necessary impact parameter selection along the different ion trajectories is expected to be texture in the Au-foils.
