Chin. Phys. Lett.  2008, Vol. 25 Issue (12): 4348-4351    DOI:
Original Articles |
Guiding of 60keV O6+ Ions through Nanocapillaries in an Uncoated Al2O3 Membrane
CHEN Xi-Meng, XI Fa-Yuan, QIU Xi-Yu0, SHAO Jian-Xiong, CUI Ying, SUN
Guang-Zhi, WANG Jun, CHEN Yi-Feng, LIU Hui-Ping, YIN Yong-Zhi, LOU Feng-Jun, WANG Xing-An, XU Jun-Kui, ZHOU Chun-Lin
School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000
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CHEN Xi-Meng, XI Fa-Yuan, QIU Xi-Yu0 et al  2008 Chin. Phys. Lett. 25 4348-4351
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Abstract We measure the transmission of O6+ ions with a higher energy of 60 keV (in turn a higher value of Ep/q) through capillaries in an uncoated Al2O3 membrane, and obtain agreements with previously reported results in general angular distribution of the transmitted ions and the transmission profile width variation with capillary tilt angle. The transmission fractions as a function of the tilt angle can be fitted to the semi-empirical Gaussian-like function well. Due to using uncoated capillary membrane, our ψc is larger than that using gold-coated one, in spite of our larger value of Ep/q, which suggests a larger equilibrium charge Q in our experiment.
Keywords: 61.85.+p      34.50.Fa     
Received: 27 August 2008      Published: 27 November 2008
PACS:  61.85.+p (Channeling phenomena (blocking, energy loss, etc.) ?)  
  34.50.Fa (Electronic excitation and ionization of atoms (including beam-foil excitation and ionization))  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2008/V25/I12/04348
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CHEN Xi-Meng
XI Fa-Yuan
QIU Xi-Yu0
SHAO Jian-Xiong
CUI Ying
SUNGuang-Zhi
WANG Jun
CHEN Yi-Feng
LIU Hui-Ping
YIN Yong-Zhi
LOU Feng-Jun
WANG Xing-An
XU Jun-Kui
ZHOU Chun-Lin
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