中国物理B ›› 2009, Vol. 18 ›› Issue (7): 2739-2743.doi: 10.1088/1674-1056/18/7/019

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Guided transmission of oxygen ions through Al2O3 nanocapillaries

陈益峰, 陈熙萌, 娄凤君, 徐进章, 邵剑雄, 孙光智, 王俊, 席发元, 尹永智, 王兴安, 徐俊奎, 崔莹, 丁宝卫   

  1. School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China
  • 收稿日期:2008-10-06 修回日期:2009-02-15 出版日期:2009-07-20 发布日期:2009-07-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 10775063).

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)   

  1. School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China
  • Received:2008-10-06 Revised:2009-02-15 Online:2009-07-20 Published:2009-07-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 10775063).

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摘要： The transmissions of oxygen ions through Al2O3 nanocapillaries each 50~nm in diameter and 10~μ m 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.

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.

Key words: capillary guiding, tilt angle, energy dependence, charge state dependence

中图分类号:  (Scanning electron microscopy (SEM) (including EBIC))

  • 68.37.Hk
61.46.-w (Structure of nanoscale materials) 68.49.Sf (Ion scattering from surfaces (charge transfer, sputtering, SIMS))