Guided transmission of oxygen ions through Al2O3 nanocapillaries
Chen Yi-Feng(陈益峰), Chen Xi-Meng(陈熙萌)†, Lou Feng-Jun(娄凤君), Xu Jin-Zhang(徐进章), Shao Jian-Xiong(邵剑雄), Sun Guang-Zhi(孙光智), Wang Jun(王俊), Xi Fa-Yuan(席发元), Yin Yong-Zhi(尹永智), Wang Xing-An(王兴安), Xu Jun-Kui(徐俊奎), Cui Ying(崔莹), and Ding Bao-Wei(丁宝卫)
School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China
Abstract The transmissions of oxygen ions through Al2O3 nanocapillaries each 50~nm in diameter and 10 μm in length at a series of different tilt angles are measured, where the ions with energies ranging from 10 to 60 keV and charge states from 1 up to 6 are involved. The angular distribution and the transmission yields of transported ions are investigated. Our results indicate both the existence of a guiding effect when ions pass through the capillary and a significant dependence of the ion transmission on the energy and the charge state of the ions. The guiding effects are observed to be enhanced at lower projectile energies and higher charge states. Meanwhile, the results also exhibit that the transmission yields increase as the tilt angle decreases at a given energy and charge state.
Received: 06 October 2008
Revised: 15 February 2009
Accepted manuscript online:
PACS:
68.37.Hk
(Scanning electron microscopy (SEM) (including EBIC))
(Ion scattering from surfaces (charge transfer, sputtering, SIMS))
Fund: Project supported by the National
Natural Science Foundation of
China (Grant No 10775063).
Cite this article:
Chen Yi-Feng(陈益峰), Chen Xi-Meng(陈熙萌), Lou Feng-Jun(娄凤君), Xu Jin-Zhang(徐进章), Shao Jian-Xiong(邵剑雄), Sun Guang-Zhi(孙光智), Wang Jun(王俊), Xi Fa-Yuan(席发元), Yin Yong-Zhi(尹永智), Wang Xing-An(王兴安), Xu Jun-Kui(徐俊奎), Cui Ying(崔莹), and Ding Bao-Wei(丁宝卫) Guided transmission of oxygen ions through Al2O3 nanocapillaries 2009 Chin. Phys. B 18 2739
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