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Title: Interaction of 18-keV O{sup -} ions with Al{sub 2}O{sub 3} nanocapillaries

Abstract

The transmission of 18-keV O{sup -} ions through Al{sub 2}O{sub 3} nanocapillaries with 50 nm in diameter and 12 {mu}m in length is studied in this work. By measuring angular distribution of transmitted particles when capillaries were tilted with respect to incident ion beam, two peaks were observed. It is distinguished that one of them is composed by direct transmitted ions and another one is composed by scattered ions. A phenomenon referred to as guiding effect, as found for highly charged ions and low-energy electrons, was observed. When negative ions (18-keV O{sup -}) are transmitted through nanocapillaries, most of them were ionized to neutral atoms and even positive ions. The intensity of transmitted particles (O{sup -}, O{sup 0}, and O{sup +}) decreased when the tilt angle increased. In transmitted particles, the fraction of O{sup -} declined but that of O{sup 0} and O{sup +} ions grew when the tilt angle grew. Both elastic collision and electrostatic scattering were found in scattered ions.

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ;  [1]
  1. School of Nuclear Science and Technology, Lanzhou University, Gansu 730000 (China)
Publication Date:
OSTI Identifier:
21308486
Resource Type:
Journal Article
Journal Name:
Physical Review. A
Additional Journal Information:
Journal Volume: 79; Journal Issue: 5; Other Information: DOI: 10.1103/PhysRevA.79.052902; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1050-2947
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ALUMINIUM OXIDES; ANGULAR DISTRIBUTION; ANIONS; CATIONS; CHANNELING; ELECTRONS; INTERACTIONS; ION BEAMS; KEV RANGE 10-100; OXYGEN; OXYGEN IONS; PARTICLES; SCATTERING

Citation Formats

Sun Guangzhi, Chen Ximeng, Wang Jun, Chen Yifeng, Xu Junkui, Zhou Chunlin, Shao Jianxiong, Cui Ying, Ding Baowei, Yin Yongzhi, Wang Xinan, Lou Fengjun, Lv Xueyang, Qiu Xiyu, Jia Juanjuan, Chen Lin, Xi Fayuan, Chen Zichun, Li Lanting, and Liu Zhaoyuan. Interaction of 18-keV O{sup -} ions with Al{sub 2}O{sub 3} nanocapillaries. United States: N. p., 2009. Web. doi:10.1103/PHYSREVA.79.052902.
Sun Guangzhi, Chen Ximeng, Wang Jun, Chen Yifeng, Xu Junkui, Zhou Chunlin, Shao Jianxiong, Cui Ying, Ding Baowei, Yin Yongzhi, Wang Xinan, Lou Fengjun, Lv Xueyang, Qiu Xiyu, Jia Juanjuan, Chen Lin, Xi Fayuan, Chen Zichun, Li Lanting, & Liu Zhaoyuan. Interaction of 18-keV O{sup -} ions with Al{sub 2}O{sub 3} nanocapillaries. United States. doi:10.1103/PHYSREVA.79.052902.
Sun Guangzhi, Chen Ximeng, Wang Jun, Chen Yifeng, Xu Junkui, Zhou Chunlin, Shao Jianxiong, Cui Ying, Ding Baowei, Yin Yongzhi, Wang Xinan, Lou Fengjun, Lv Xueyang, Qiu Xiyu, Jia Juanjuan, Chen Lin, Xi Fayuan, Chen Zichun, Li Lanting, and Liu Zhaoyuan. Fri . "Interaction of 18-keV O{sup -} ions with Al{sub 2}O{sub 3} nanocapillaries". United States. doi:10.1103/PHYSREVA.79.052902.
@article{osti_21308486,
title = {Interaction of 18-keV O{sup -} ions with Al{sub 2}O{sub 3} nanocapillaries},
author = {Sun Guangzhi and Chen Ximeng and Wang Jun and Chen Yifeng and Xu Junkui and Zhou Chunlin and Shao Jianxiong and Cui Ying and Ding Baowei and Yin Yongzhi and Wang Xinan and Lou Fengjun and Lv Xueyang and Qiu Xiyu and Jia Juanjuan and Chen Lin and Xi Fayuan and Chen Zichun and Li Lanting and Liu Zhaoyuan},
abstractNote = {The transmission of 18-keV O{sup -} ions through Al{sub 2}O{sub 3} nanocapillaries with 50 nm in diameter and 12 {mu}m in length is studied in this work. By measuring angular distribution of transmitted particles when capillaries were tilted with respect to incident ion beam, two peaks were observed. It is distinguished that one of them is composed by direct transmitted ions and another one is composed by scattered ions. A phenomenon referred to as guiding effect, as found for highly charged ions and low-energy electrons, was observed. When negative ions (18-keV O{sup -}) are transmitted through nanocapillaries, most of them were ionized to neutral atoms and even positive ions. The intensity of transmitted particles (O{sup -}, O{sup 0}, and O{sup +}) decreased when the tilt angle increased. In transmitted particles, the fraction of O{sup -} declined but that of O{sup 0} and O{sup +} ions grew when the tilt angle grew. Both elastic collision and electrostatic scattering were found in scattered ions.},
doi = {10.1103/PHYSREVA.79.052902},
journal = {Physical Review. A},
issn = {1050-2947},
number = 5,
volume = 79,
place = {United States},
year = {2009},
month = {5}
}