Transmission of 3 keV Ne7+ ions through nanocapillaries etched in polymer foils:: Evidence for capillary guiding -: art. no. 133201
Transmission of 3 keV Ne7+ ions through nanocapillaries etched in polymer foils:: Evidence for capillary guiding -: art. no. 133201
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DOI：
10.1103/physrevlett.88.133201
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发表时间：
2002-04-01
影响因子：
8.6
通讯作者：
Sulik, B
中科院分区：
文献类型：
--
作者：
Stolterfoht, N;Bremer, JH;Sulik, B
我们报告了前所未有的 keV Ne7+ 离子通过直径为 100 nm、长度为 10 μm 的毛细管的传输实验，该毛细管是通过在聚合物箔中蚀刻离子轨迹而产生的。我们研究了倾斜达 +/- 20 度的箔，入射离子被迫与毛细管表面相互作用。令人惊讶的是，大多数 Ne7+ 离子被发现在其初始电荷状态下能够在表面散射事件中幸存下来。透射粒子的角度分布表明 Ne7+ 离子沿毛细管轴传播。 Ne7+ 离子的毛细管引导提供了证据，表明毛细管内壁带电，并且在自组织过程中抑制了来自表面的电子捕获。
We report unprecedented transmission experiments of keV Ne7+ ions through capillaries of 100 nm diameter and 10 mum length produced by etching ion tracks in a polymer foil. We studied foils tilted up to +/- 20degrees for which the incident ions are forced to interact with the capillary surface. Surprisingly, the majority of Ne7+ ions were found to survive the surface scattering events in their initial charge state. The angular distributions of the transmitted particles indicate propagation of the Ne7+ ions along the capillary axis. This capillary guiding of the Ne7+ ion provides evidence that the inner walls of the capillaries become charged and electron capture from the surface is suppressed in a self-organizing process.