Guiding of 150keV O6+ ions through nanocapillaries in an uncoated Al2O3 membrane: special time dependence of the transmission profile width
Chen Xi-Meng(陈熙萌)a)†, Xi Fa-Yuan(席发元)a), Qiu Xi-Yu(邱玺玉)a), Shao Jian-Xiong(邵剑雄)a), Xiao Guo-Qing(肖国青)b), Cui Ying(崔莹)a), Sun Guang-Zhi(孙光智)a), Wang Jun(王俊)a), Chen Yi-Feng(陈益峰)a), Liu Hui-Ping(刘会平)a), Yin Yong-Zhi(尹永智)a), Wang Yu-Yu(王瑜玉)b), Li De-Hui(李德慧)b), Lou Feng-Jun(娄凤君)a), Wang Xing-An(王兴安)a), Xu Jun-Kui(徐俊奎)a), and Zhou Chun-Lin(周春林)a)
aSchool of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China; bInstitute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
Abstract This paper reports that the transmission of O$^{6 + }$ ions with energy of 150keV through capillaries in an uncoated Al$_{2}$O$_{3}$ membrane was measured, and agreements with previously reported results in general angular distribution of the transmitted ions and the transmission fractions as a function of the tilt angle well fitted to Gaussian-like functions were observed. Due to using an uncoated capillary membrane, our $\psi _{\rm c} $ is larger than that using a gold-coated one with a smaller value of $\frac{E_{\rm p}}{q}$, which suggests a larger equilibrium charge $Q_\infty $ in our experiment. The observed special width variation with time and a larger width than that using a smaller $\frac{E_{\rm p} }{q}$ were qualitatively explained by using mean-field classical transport theory based on a classical-trajectory Monte Carlo simulation.
Received: 16 August 2008
Revised: 21 October 2008
Accepted manuscript online:
Fund: Project supported by the National
Natural Science Foundation of
China (Grant No 10775063).
Cite this article:
Chen Xi-Meng(陈熙萌), Xi Fa-Yuan(席发元), Qiu Xi-Yu(邱玺玉), Shao Jian-Xiong(邵剑雄), Xiao Guo-Qing(肖国青), Cui Ying(崔莹), Sun Guang-Zhi(孙光智), Wang Jun(王俊), Chen Yi-Feng(陈益峰), Liu Hui-Ping(刘会平), Yin Yong-Zhi(尹永智), Wang Yu-Yu(王瑜玉), Li De-Hui(李德慧), Lou Feng-Jun(娄凤君), Wang Xing-An(王兴安), Xu Jun-Kui(徐俊奎), and Zhou Chun-Lin(周春林) Guiding of 150keV O6+ ions through nanocapillaries in an uncoated Al2O3 membrane: special time dependence of the transmission profile width 2009 Chin. Phys. B 18 1955
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Transmission of 18 keV negative ions Cl- through nanocapillariesin Al2O3 membrane Lü Xue-Yang(吕学阳),Chen Lin(陈林),Chen Xi-Meng(陈熙萌),Jia Juan-Juan(贾娟娟), Zhou Peng(周鹏),Zhou Chun-Lin(周春林), Qiu Xi-Yu(邱玺玉),Shao Jian-Xiong(邵剑雄), Cui Ying(崔莹),Yin Yong-Zhi(尹永智),Wang Hong-Wei(王宏伟),and Ji Ming-Chao(姬明超) . Chin. Phys. B, 2011, 20(1): 013401.
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