Ion Desorption from Single-Walled Carbon Nanotubes Induced by Soft X-ray Illumination

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概要

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• We have investigated ion desorption from single-walled carbon nanotubes (SWNTs) that is induced by soft X-ray illumination in the C 1s core-excitation energy range in order to have insight to the mechanism of defect formation caused by the similar excitation. The mass of desorbed ions was analyzed by a time-of-flight (TOF) spectrometer and the photon energy dependence of the ion yield or the desorption efficiency spectra were measured as a function of the monochromatic photon energy used for illumination. Experimental results exclude the simple detachment of carbon atoms constituting the nanotubes from the cause of the defect formation. Also the photo-induced etching of carbon atoms associated with C–H bond rupture is ruled out from the defect formation mechanism. Auger mechanisms to explain the photo-induced desorption are discussed.

• 2010-10-25

著者

• Shiomi Junichiro

  Department Of Mechanical Engineering School Of Engineering The University Of Tokyo

• Mera Yutaka

  Department Of Applied Physics Graduate School Of Engineering The University Of Tokyo

• Fujiwara Takayuki

  Department Of Allied Medical Science Shinshu University

• Maruyama Shigeo

  Department Of Internal Medicine Gotsu General Hospital

• Maeda Koji

  Department Of Applied Physics Faculty Of Engineering The University Of Tokyo:the Institute For Solid

• Xiang Rong

  Department of Mechanical Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-8656, Japan

• Mera Yutaka

  Department of Applied Physics, The University of Tokyo, Bunkyo, Tokyo 113-8656, Japan

• Ishizaki Kiichiro

  Department of Applied Physics, The University of Tokyo, Bunkyo, Tokyo 113-8656, Japan

• Kakiuchi Takuhiro

  The Graduate University for Advanced Studies, Tsukuba, Ibaraki 305-0801, Japan

• Mase Kazuhiko

  The Graduate University for Advanced Studies, Tsukuba, Ibaraki 305-0801, Japan

• MAEDA Koji

  Department of Agricultural Chemistry, University of Osaka Prefecture

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